[Instabilities of the Thumb Carpometacarpal Joint: Our Surgical Outcomes]. / Nestability karpometakarpálního kloubu palce ruky: nase výsledky operacního resení.

PURPOSE OF THE STUDY Carpometacarpal (CMC) instabilities of the thumb joint occur after injuries or due to joint overload in patients with congenital joint hypermobility. They are often undiagnosed and, if left untreated, are the basis for the development of rhizarthrosis in young individuals. The authors present the results of the Eaton-Littler technique. MATERIAL AND METHODS The authors present a set of 53 CMC joints of patients with an average age of 26.8 years (15-43 years) operated on in the years 2005-2017. Post-traumatic conditions were found in 10 patients and in 43 cases instability was caused by hyperlaxity, also demonstrated in other joints. The operation was performed from the Wagner's modified anteroradial approach. After the operation, a plaster splint was applied for 6 weeks, after which rehabilitation (magnetotherapy, warm-up) began. Patients were evaluated using the VAS (pain at rest and during exercise), DASH score in the work module, and subjective evaluation (no difficulties, difficulties not limiting normal activities, and difficulties limiting normal activities) before surgery and 36 months after surgery. RESULTS During the preoperative assessment, the average VAS value was 5.6 at rest and 8.3 during exercise. During the VAS assessment at rest, the values at 6, 12, 24 and 36 months after surgery were 5.6, 2.9, 0.9, 1, 2 and 1.1. When evaluated in the given intervals under load, the detected values were 4.1, 2, 2.2 and 2.4. The DASH score in the work module was 81.2 before surgery, 46.3 at 6 months, 15.2 at 12 months, 17.3 at 24 months, and 18.4 at 36 months after surgery. In the subjective self-assessment made at 36 months after surgery, 39 patients (74%) assessed their condition as having no difficulties, ten patients (19%) reported difficulties that did not limit normal activities, and four patients (7%) reported difficulties limiting normal activities. DISCUSSION Most authors present the results of their surgeries in patients with post-traumatic joint instability, and they report excellent results at two to six years after surgery. There is a negligible number of studies addressing instabilities in patients with instability caused by hypermobility. When using the conventional method described by the authors in 1973, our results of the evaluation performed at 36 months after surgery are comparable to those reported by other authors. We are well aware of the fact that this is a short-term follow-up and that this method does not prevent developing degenerative changes in the case of long-term follow-up, but reduces clinical difficulties and may delay the development of severe rhizarthrosis in young individuals. CONCLUSIONS CMC instability of the thumb joint is a relatively common disorder, although not all individuals experience clinical difficulties. In the case of difficulties, the instability needs to be diagnosed and treated as this is how the development of early rhizarthrosis in the predisposed individuals can be prevented. Our conclusions suggest a possibility of a surgical solution with good results. Key words: carpometacarpal thumb joint, thumb CMC joint, carpometacarpal thumb instability, joint laxity, rhizarthrosis.

[Clinical Outcomes of the Application of Platelet-Rich Fibrin during Anatomic Anterior Cruciate Ligament Reconstruction: Results of Prospective Randomised Study]. / Klinické výsledky aplikace fibrinu bohatého na desticky behem anatomické rekonstrukce predního zkrízeného vazu: výsledky prospektivní randomizované studie.

PURPOSE OF THE STUDY It was a prospective, randomised, unblinded study. Effects of the application of platelet-rich fibrin (PRF) on the anatomic anterior ligament reconstruction were examined. MATERIAL AND METHODS A total of 40 patients who underwent a surgery between 2012 and 2014 were enrolled in the study. The patients were randomised into two groups: the group with PRF application (n=20) and the group without PRF application (n=20, control group). The study included 11 women and 29 men, with the mean age at the time of inclusion into the study 29.1 years. Vivostat ® PRF was obtained perioperatively from the patient s blood and applied intraoperatively to the hamstring tendon graft. The ACL graft healing was assessed through magnetic resonance (MRI) at 6 and 12 months postoperatively. The clinical outcomes (the Lysholm score and the IKDC Subjective score, return to pre-injury sport levels, Pivot-shift test, graft failure) as well as standardised laxity measurements using GenouRob arthrometer were performed preoperatively and 12 months after surgery. RESULTS The study was completed by thirty-three (33) patients (17 in the PRF group and 16 in the control group). In two cases, postoperative graft failure was reported (both cases in the control group). No significant differences were found in the process of graft ligamentization evaluated through MRI (p=0.07). No significant difference between the groups was identified with respect to return to pre-injury sport levels (p=0.232), or the Lysholm score and IKDC Subjective score (p=0.259, and p=0.364 respectively). The postoperative knee laxity measurement using Genourob arthrometer did not reveal any significant differences between the PRF group and the control group. DISCUSSION Results similar to those arrived at by our study have recently been published also by other authors worldwide. We can therefore assume that the application of PRF can be of benefit, especially at the early stage of healing. The results still need to be verified on a larger study group, the study design should focus on the development in the early postoperative period. CONCLUSIONS In our study group, no significant difference was observed in the evaluated subjective and objective clinical parameters. Only the parameter regarding the ACL graft failure fell just short of statistical significance, namely to the disadvantage of the group without the PRF application. Key words: anterior cruciate ligament, arthroscopy, anatomic ACL reconstruction, magnetic resonance imaging of the graft, platelet-rich fibrin, graft healing, MRI signal intensity of the graft.

[Arthroscopic Excision of Osteoid Osteoma of the Femoral Head]. / Artroskopická exstirpace osteoidního osteomu hlavice femuru.

Osteoid osteoma is a primary benign bone tumor with rare intra-articular occurrence. Our case report describes a rare case of a 21-year-old man with long-term severe pain in the right hip region caused by osteoid osteoma managed by arthroscopic excision. The clinical finding of pains and a limited range of motion did not correlate with the normal plain X-ray finding. The osteoid osteoma was suspected based on the CT scan. In literature, several methods of resection of intraarticular osteoid osteoma of the hip are described. Since our department has long specialised in arthroscopic hip surgery and based on the available examinations the tumor appeared to be located within the arthroscopic reach, we decided for arthroscopic resection of the tumor. Our study comprises a detailed description of the entire surgical procedure, the used arthroscopic approaches and the arthroscopic technique of tumor excision. The histological examination of samples taken from the mass confirmed the suspected osteoid osteoma. The success of arthroscopic excision of the tumor was later confirmed also by very positive postoperative recovery when the patient very soon experienced a considerable reduction of pain observed during our five-year follow-up of the patient (Day 13, Week 2 and 6, Year 1, 2 and 5). During the follow-up period, an increase of the Harris Hip Score (13.5 preoperatively vs 76.6/91/94/96/96 postoperatively) and a decrease in VAS (9 preoperatively vs. 3/1/1/1/1) were reported. The follow-up CT and MRI performed at 2 or 5 years after surgery did not show tumor recurrence. The case report includes also illustrations consisting of X-rays, CT and MRI scans before and after surgery as well as multiple scans taken intraoperatively. It has to be emphasized that this is a rare case and an evaluation of a larger group of patients would be necessary to verify the successful outcomes of arthroscopic technique in treatment of the hip joint osteoid osteoma.

[Complications after Revision Total Knee Arthroplasties]. / Komplikace po revizních operacích totálních endoprotéz kolena.

PURPOSE OF THE STUDY The failure of arthroplasties and above all the issue of infection and its detection have become an ever more frequently discussed problem. The purpose of our study was to determine the frequency and the type of complications after revision total knee arthroplasties and to compare them with the frequency of complications after primary implantations. MATERIAL AND METHODS In our group of patients followed up in the period from January 2007 to December 2016, in 50 patients the revision surgery was performed for aseptic loosening and in 24 patients for deep infection. In the case of revision surgery for aseptic loosening, in 18 patients original sterilised components were used as a spacer, in 6 patients an articulating cement spacer was applied. Only the complications resulting in the performance of further revision were included in the statistics. A total of 13 patients underwent a primary implantation at another centre. The number of revisions and the reason for implant failure were monitored. The results were compared with the frequency of revision surgeries after primary total knee arthroplasty, of which 2,436 were carried out in the referred to period. RESULTS Of 2,436 primary endoprostheses, altogether 3.1 % failed. In 50 (2.1 %) patients aseptic loosening was reported, 24 patients (1 %) suffered from infection. The median time from primary implantation to revision was 11 years for aseptic loosening, 2 years for infection. The most frequent cause of failure was aseptic loosening. In the group of patients who underwent a revision surgery for aseptic loosening, another revision was necessary in 6 cases (12 %), in the group of patients after the two-stage revision surgery for infection, in 9 cases (37.5 %). The most frequent reason for revision surgery was infection - in both the groups this was the reason for 67 % of revision surgeries. DISCUSSION Our results obtained with respect to primary as well as revision surgeries for aseptic loosening correspond with the results reported by other authors. In the case of two-stage revision implantation, the reported frequency of recurrent infections is the same, the frequency of revision surgeries for aseptic causes is slightly lower in our group. The most frequent causes of revision surgery are also in agreement. In the case of primary implantation, the patients most frequently suffer from aseptic loosening, after revision surgeries another revision surgery is most often performed due to infection. The literature refers to studies suggesting the potential use of original components as a spacer with the same success rate as that achieved with the cement spacer. The original components produced good results in two thirds of two-stage revision implantations, which is why we can agree with these studies. CONCLUSIONS The results clearly show a noticeable increase in the frequency of complications in revision surgeries compared to primary surgeries. In comparison with primary implantations, a subsequent revision after the revision implantation for aseptic loosening was necessary three times more frequently, after the two-stage revision implantation for infection it was ten times more frequently. As the most problematic complication can be considered the infection in case of primary as well as revision interventions. It is obvious that aseptic loosening of the primary implant usually occurs later (the median of 11 years) than the development of deep infection (the median of 2 years). Key words: total knee arthroplasty, revision, failure, complications, aseptic loosening, infection, spacer.

[Peroneal Nerve Palsy Management by Tibialis Posterior Muscle Transposition - Anatomical and Clinical Study]. / Resení peroneální parézy transpozicí musculus tibialis posterior ­ anatomická a klinická studie.

PURPOSE OF THE STUDY Transposition of tibialis posterior muscle ranks among the methods of dorsiflexion restoration in patients with peroneal nerve palsy. Even though this method is commonly used, anatomical variations are still encountered which make us modify the established procedures. The purpose of this study is to evaluate the functional outcomes of operated patients and based on the clinical experience to define by cadaver preparation the anatomical causes preventing the use of the standard transposition technique. MATERIAL AND METHODS The clinical group includes 21 patients (15 men, 6 women) with the mean age of 34.2 years and with common peroneal nerve palsy confirmed by EMG. In 20 patients, transposition of the tendon of the tibialis posterior muscle (MTP) through the interosseous membrane of the leg was performed. In one patient the tendon was transposed ventrally to the distal end of the tibia and fixed in the lateral cuneiform bone due to an extremely narrow space of the interosseous membrane of the leg distally between the lower limb bones. In 18 patients the tendon was fixed by osteosuture to the base of 3rd metatarsal bone, in three patients to the lateral cuneiform bone. The outcomes were evaluated at 6 months after the surgery, when active ankle dorsiflexion (DF) range of motion greater than 5° was considered an excellent outcome, active position at 90° up to DF less than 5° a satisfactory outcome, and any plantigrade position as a poor outcome. The anatomical study included 20 extremities fixed by formalin (10 cadavers, 5 men and 5 women with the mean age of 71.3 years). The length of the individual parts of tibialis posterior muscle was measured and the variations of the muscle attachment were evaluated. The measurement was concluded by a simulation of surgical procedure. RESULTS When evaluating the clinical group, an excellent outcome was reported in 12 patients (57%), a satisfactory outcome in 8 patients (38%) and a poor outcome in one patient (5%). When evaluating the anatomical group, a division of the attaching part of the tendon into three main strips was observed. The thickest middle strip attached to the tuberosity of navicular bone and medial cuneiform bone was reported in all the specimens. The thinner lateral strip (originating from the tendon in 90% of specimens) was attached to the intermediate and lateral cuneiform bone, the cuboid bone, metatarsal bones II-V, and moreover it grows into the origin of the flexor hallucis brevis muscle. The third strip of the tendon attached to the sustentaculum tali, plantar calcaneonavicular ligament and fibrocartilago navicularis was missing in one specimen (5%). When the passing the tendon through the interosseous space between the lower limb bones was simulated in order for the tendon to go in the direction of the planned traction, in two specimens (10%) the pulling through was impossible due to the tendon being thicker than the interosseous space. In two specimens (10%) it was not the tendon, but already the muscular belly which passed through the given space. DISCUSSION In our group, 95% of the functional outcomes were excellent or satisfactory. A poor result was reported in one patient, in whom the EMG examination was not performed as a standard procedure and in whom the muscular strength was insufficient to achieve full dorsiflexion of the ankle. The anatomical study indicates that the narrow space between the lower limb bones can prevent the pulling through of the tendon, which can be addressed intraoperatively by the transposition of the tendon ventrally to tibia. The study reveals that the tendon necessary for transposition can be elongated by the strips of the tendon attached to the sole of the foot. CONCLUSIONS The knowledge of the anatomical conditions may help us better manage potential complications intraoperatively. Key words: tibialis posterior muscle, peroneal nerve palsy, transposition of tibialis posterior muscle, anatomy of tibialis posterior muscle, common fibular nerve palsy.

[Proximal Row Carpectomy - Five-Year Results]. / Proximální karpektomie ­ petileté výsledky.

PURPOSE OF THE STUDY This study aims to evaluate the results of patients treated by proximal row carpectomy at a follow-up of at least 5 years after the surgery. MATERIAL AND METHODS A total of 25 patients were treated by proximal row carpectomy for degenerative changes of the wrist as a consequence of the previous trauma or avascular necrosis of the lunate bone, of whom 21 patients underwent a follow-up examination at least 5 years postoperatively. Proximal row carpectomy was indicated in 15 patients for SLAC wrist, in 4 patients for avascular necrosis of the lunate bone, in 1 patient for SNAC wrist, and in 1 patient for inveterate dislocation of the wrist. The follow-up clinical and radiological examinations were performed at least 5 years after the surgery. The range of wrist motion, grip strength, presence of pain at rest or pain under loads, total clinical score according to the Green and O'Brien scoring system, patient satisfaction with the outcome of surgery were assessed. By fluoroscopy the range of wrist motion, degenerative changes of the radiocapitate joint, and translation of the capitate bone with respect to the distal radius were evaluated. RESULTS Postoperative improvements in the range of motion and grip strength were confirmed. Also, the pain relief at rest and under loads was achieved. Five years after the surgery, most of the patients (85.6%) reported an overall improvement. The total clinical score according to the Green and O'Brien scoring system improved from 35.8 preoperatively to 63.1 postoperatively. DISCUSSION The advantage of this procedure is a low percentage of complications, relative technical simplicity, maintenance of functional motion of the wrist, satisfactory grip strength, and pain relief. There are no complications related to the implant, no risk of a non-union. CONCLUSIONS As shown by our results obtained 5 years after the surgery as well as the published data, in the indicated cases the proximal row carpectomy is an appropriate surgical technique to treat the degenerative changes of the wrist. In most of the patients, favourable functional results and pain relief can be expected. Key words:proximal row carpectomy, SLAC wrist, SNAC wrist, avascular necrosis of the lunate bone, dislocation of the wrist.

HAS A GLOMUS TUMOR ALWAYS A QUICK DIAGNOSIS?

INTRODUCTION: Glomus tumor is a rare and benign vascular tumor. Although symptoms specific for this tumor are quite clear, there is still a delay between the onset of symptoms, diagnosis and subsequent surgical therapy. The authors monitor the time from the onset of symptoms to the diagnosis and management of the problems. MATERIAL AND METHODS: Between 2004-2012, a total of 5 patients were diagnosed with subungual glomus tumor in the area of the distal phalanges of the hand. It involved 3 women and 2 men with the mean age of 32.2 years (26-47 years). During the first examination, we monitored the duration of symptoms, number and specialty of the doctors who examined the patient, and what examinations were performed. When the cold test was positive, MRI was performed and the patients were indicated for surgical revision. Tissue samples in all patients were histologically examined. Patients were followed for 2 years. RESULTS: It was found that the patients had clinical symptoms for an average of 2.4 years. In our group, the patients were examined by an average of 5.4 physicians (3-9 physicians). On examination before surgery, three patients reported changes in the nail bed and two patients reported no change. When following the patients 2 years after the surgery, relapse occurred in one patient and it was treated with reoperation. During regular follow-up 2 years after the surgery, 4 patients were without nail deformity. In one patient, there was resulting nail deformity. Relapse occurred in only one case. DISCUSSION: Because the glomus tumor is a rare lesion, occurring most frequently in the nail bed, early diagnosis is still a problem. Even in literature, we encounter a similar time frame from the onset of symptoms until the final diagnosis of 1.9 to 8 years. CONCLUSION: Although clinical signs and problems concerning the glomus tumor are very obvious, there still remains a long time for diagnosis. It would certainly be most beneficial for patients with persistent symptoms not to be referred to different specialists, but directly to a department that specializes in hand surgery.

[Perilunátní poskození zápestí]. / Perilunátní poskození zápestí.

PURPOSE OF THE STUDY Perilunate dislocations and perilunate fractures are serious wrist injuries which are often overlooked at primary treatment. Their inadequate therapy results in severe wrist damage and patient disability. An early diagnosis and correct therapy can prevent such conditions. MATERIAL AND METHODS A group of 25 patients with 26 wrist injuries is presented. It included nine patients with isolated perilunate dislocations (34%), 11 patients with trans-scaphoid perilunate dislocations (44%),two with trans-radial trans-scaphoid perilunate dislocations (7%) and next two patients with trans-radial perilunate dislocations (7%). One patients had, in addition to perilunate dislocation, injury to the capitohamat joint with damage to both portions of the interosseous ligament (4%). One patient (4%) sustained a trans-scaphoid perilunate dislocation with injury to the scapholunate ligament, in which the proximal pole of the scaphoid was separated and interfered with dislocation reduction. RESULTS The correct diagnosis was made on early examination in 16 patients (62%), within a week of injury in four patients (15%), within a months of injury in two patients (8%) and even later in four patients (15%). The results of treatment evaluation based on the Wrightington Hospital Wrist Scoring System were excellent in 19%, good in 54%, satisfactory in 19% and poor in 8% of the patients. The poor result in one patient was due to necrosis of the lunate bone;the diagnosis of a perilunate dislocation was made within a month of injury. The poor results in the other patient were associated with complex regional pain syndrome. DISCUSSION Perilunate injuries of the wrist are quite frequent and although the treatment procedure is commonly known, its principles are not always obeyed. A good outcome is related to an early diagnosis and correct reconstruction of the injured structures. In our group, the diagnosis was made at the first examination in only 62% of patients and later than a week after injury in 23%. The patient in whom necrosis of the lunate bone developed had the diagnosis made at 1 post-injury month. Early reduction of bone structures and reconstruction of ligaments also contribute to good results. CONCLUSIONS Good outcomes in perilunate injuries depend on an early and correct diagnosis, an appropriate therapeutic procedure and an orthopaedic surgeon who has experience with management of such injuries. A deep knowledge of wrist kinetics is necessary for this therapy as not all injuries happen according to textbook descriptions. Key words: perilunate dislocation, carpal instability, damage to carpal ligaments.

[Injury to the Scapholunate Ligament in Distal Radius Fractures: Peri-Operative Diagnosis and Treatment Results]. / Konkomitantné poranenia skafolunátneho väzu pri zlomeninách distálneho rádia ­ perioperacná diagnostika a výsledky liecby.

PURPOSE OF THE STUDY Injury to the scapholunate ligament is frequently associated with a fracture of the distal radius. At present neither a unified concept of treatment nor a standard method of diagnosis in these concomitant injuries is available. The aim of the study was to evaluate a group of surgically treated patients with distal radius fractures in order to assess a contribution of combined conventional X-ray and intra-operative fluoroscopic examinations to the diagnosis of associated lesions and to compare short-term functional outcomes of sugically treated patients with those of patients treated conservatively. MATERIAL AND METHODS A group of patients undergoiong surgery for distal radius fractures using plate osteosynthesis was evaluated retrospectively. The peri-operative diagnosis of associated injury to the scapholunate ligament was based on pre-operative standard X-ray views and intra-operative fluoroscopy. The latter consisted of images of maximum radial and ulnar deviation as well as an image of the forearm in traction exerted manually along the long axis. All views were in postero-anterior projection. Results were read directly on the monitor of a fluoroscopic device after its calibration or were obtained by comparing the thickness of an attached Kirschner wire with the distance to be measured. Subsequently, pixels were converted to millimetres. When a scapholunate ligament injury was found and confirmed by examination of the contralateral wrist, the finding was verified by open reduction or arthroscopy. Both static and dynamic instabilities were treated together with the distal radius fracture at one-stage surgery. After surgery, the patients without ligament injury had the wrist immobilised for 4 weeks, then rehabilitation followed. In the patients with a damaged ligament, immobilisation in a short brace lasted until transarticular wires were removed. All patients were followed up for a year at least. At follow-up, the injured wrist was examined for signs of clinical instability of the scapholunate joint, functional outcome was assessed using the Mayo Wrist Score (MWS) and pain intensity was evaluated on the Visual Analoque Scale (VAS). Restriction in daily activities was rated by the Quick Disabilities of the Arm, Shoulder and Hand (QDASH) score and plain X-ray was done. If any of the results was not satisfactory, MRI examination was indicated. RESULTS Of a total of 265 patients, 35 had injury to the scapholunate joint, 16 had static instability diagnosed by a standard fluoroscopic examination and nine patients with an acute phase of injury remained undiagnosed. For detection of associated scapholunate injuries, a standard X-ray examination had sensitivity of 46%, specificity of 99%, accuracy of 92%, positive predictive value of 84%, negative predictive value of 92%, positive likelihood ratio = 35.05 and negative likelihood ratio = 0.55. Dynamic fluoroscopic examination showed sensitivity of 53%, specificity of 99%, accuracy of 95%, positive predictive value of 77%, negative predictive value of 96%, positive likelihood ratio = 36.49 and negative likelihood ratio = 0.48. Using the MWS system, no differences in the outcome of scapholunate instability treatment were found between the patients undergoing surgery and those treated conservatively (p=0.35). Statistically significant differences were detected in the evaluation of subjective parameters - both VAS and QDASH scores were better in the treated than non-treated patients (p=0.02 and p=0.04, respectively). DISCUSSION The high negative predictive values of both standard X-ray and intra-operative fluoroscopy showed that combined use of the two method is more relevant for excluding than for confirming an injury to the scapholunate ligament concomitant with distal radius fracture. Similarly, the low negative likelihood ratio showed that a negative result decreases the pre-test probability of concomitant injury. CONCLUSIONS Negative findings of scapholunate ligament injury on standard X-ray views and intra-operative fluoroscopic images make it unnecessary to perform any further intra-operative examination to detect injury to the scapholunate ligament. Positive findings require verification of the degree of injury by another intra-operative modality, most ideally by arthroscopy. Patients with untreated instability associated with distal radius fracture have, at short-term follow-up, no statistically significant differences in functioning of the injured extremity in comparison with treated patients. Subjectively, however, they feel more pain and more restriction in performing daily activities. Therefore, the treatment of an injured scapholunate ligament together with distal radius fracture at one-stage surgery seems to be a good alternative for the patient. Key words: distal radius fractures, scapholunate ligament, radiographic, diagnosis, outcome distal radius fracture.

[Allofit cementless acetabular component: five-year experience]. / Necementovaná jamka Allofit--petileté zkusenosti.

PURPOSE OF THE STUDY: To evaluate the mid-term results of using the Allofit cementless acetabular cup for primary hip replacement. MATERIAL AND METHOD: The Allofit cup is a cementless hemispherical acetabular component. The macrostructure on the external surface, including 1200 concentrically arranged teeth, and the rough-blasted surface of the biocompatible pure titanium provide good conditions for press-fit fixation. From 1998 to 2005 we used it in 182 cases of primary total hip replacement (THR) in 164 patients. (18 patients had bilateral THRs) The average age at the time of surgery was 58.3 years in men (range, 39-74 years) and 64.1 years in women (range, 33-80 years). We used the Bauer anterolateral approach as our standard procedure. The cup was combined with one of six types of cemented or cementless stems and a 28-mm ceramic head. At a minimum follow-up of five years, we evaluated clinical and radiological findings, i.e., the Harris hip score, radiological signs of loosening, migration and polyethylene wear. The average follow-up was 7.4 years (range, 5-11 years). For more accurate reading of X-ray films, the photographs were zoomed to 115%. RESULTS: The final evaluation included 147 primary THRs in 129 patients. We recorded no intra-operative complications. The average Harris hip score increased from pre-operative 44 to post-operative 87 points (range, 31-100). The loosening of a cup occurred in three patients (2.1%), of which two were infected (1.4%) and one was aseptic (0.7%). We had to replace the polyethylene insert in three patients, in one for abnormally high polyethylene wear and, in two, because of a ceramic head fracture due to a fall. Cup migration was not recorded. Eight cups (5.4%) had a thin (less than 1 mm) radiolucent line without signs of loosening. Polyethylene wear indicated by an asymmetric position of the head was detected by the Dorr method in 32 cups (21.8%). A shift of the head centre towards the proximal pole of the titanium shell ranged from 0.4 to 6.0 mm. The average polyethylene wear of all cups was 0.29 mm in 5 years, which is 0.06 mm per year. DISCUSSION: The Allofit acetabular cup is suitable for younger patients with good bone quality. In elderly patients or in those with severe osteoporosis, we preferably indicate cemented components. Press-fit cups can also be used in patients with postdysplastic osteoarthritis of the hip on condition that enough bone is left around the cup margin for press-fit fixation. CONCLUSIONS: Cementless press-fit cups have very good outcomes, even in a long-term follow-up. Our experience gives support to these results because of a low number of hips with loosening, both septic and aseptic, or polyethylene wear of the primary implanted acetabular cup, and no cup migration in our patients. The five-year survival rate of the Allofit acetabular cup was 95.8%.

[Our results of the Brandes-Keller procedure and Helal metatarsal osteotomy in patients with forefoot deformity]. / Nase zkusenosti s operacní rekonstrukcí prednozí u pacientu s hallux valgus a metatarzalgiemi pri pes transversoplanus.

PURPOSE OF THE STUDY: The most frequent valgus deformity of the big toe is often associated with a collapse of the traverse arc of the foot. The purpose of the present study was to assess the results of forefoot reconstruction by the Brandes-Keller resection arthro- plasty of the first metatarsophalangeal joint and the Helal metatarsal osteotomy when this deformity was present. MATERIAL: A retrospective study of 40 consecutive patients with severe forefoot deformities was performed.The patients were treated at our department in the period from 1997 to 2003.The average age at the time of surgery was 54.7 years.Twelve patients underwent bilateral surgery. The results of 52 operations were evaluated. RESULTS: Each patient returned for a personal interview by an independent investigator and a clinical examination. A post-operative forefoot score was calculated according to the system of the American Orthopaedic Foot and Ankle Society (AOFAS). This 100-point scale includes items related to pain, level of activity, deformity and motion. The average AOFAS score was 85.5 points post-operatively. No pain was reported in 38 (75 %) forefeet, mild pain in 12 (23 5 %) forefeet and moderate pain in 1 (2 %) forefoot. The complications included slow healing of the wound in two patients (3.8 %) and asymptomatic pseudoarthrosis after metatarsal osteotomy in two patients (3.8 %). Five patients (9.6 %) reported persisting swelling of the foot dorsum for a period longer than 3 months. DISCUSSION In agreement with the majority of the published data we are of the opinion that the Brandes-Keller resection arthroplasty is a surgical method suitable to treat valgus deformities of the big toe with concomitant arthritis of the first metatarsophalangeal joint (MTP) in elderly patients whose weight-bearing demands are low. This treatment permits early post-operative weight-bearing. In younger patients with valgus deformity of the big toe without arthritis it is preferred to use techniques preserving the joint. The use of total replacement of the first MTP joint is open to discussion. CONCLUSIONS: The Brandes-Keller procedure with the Helal metatarsal osteotomy, if correctly performed in indicated cases, results in painless walking in patients with forefoot deformity.

[Arthritis development following untreated scapholunate instability of the wrist]. / Rozvoj artrózy po nelécené skafolunátní nestabilite zápestí.

PURPOSE OF THE STUDY: Complete disruption of the scapholunate (SL) ligament results in the development of arthritic lesions known as scapholunate advanced collapse (SLAC) of the wrist. MATERIAL AND METHODS: The authors present the results of a prospective study of seven patients in whom radiography showed an acute com- plete rupture of the scapholunate ligament and who refused SL ligament reconstruction.This group (1) was compared with a group of 17 patients (2) who underwent ligament reconstruction soon? after an acute rupture had been detected. All patients were examined at 36 months after injury for hand function and pain using the Wrightington Hospital Wrist Scoring (WHWS) System, and for the presence or absence of SLAC by radiography. Group 1 patients underwent arthroscopic examination in order to evaluate the extent of arthritic lesions. RESULTS: As assessed by the WHWS system, in group 1 excellent, good and satisfactory results were achieved in 29%, 42% and 29% of the patients, respectively in group 2 these results were found in 59%, 35% and 6% of the patients. The radiography showed, in group 1, 14% patients free from SLAC, 43% with stage I SLAC, 29% with stage IIa SLAC and 14% with stage IIb SLAC. In group 2, 94% of the patients were free from signs of SLAC and 6% had stage IIa SLAC due to infectious complications. The arthroscopic evaluation of group 1 revealed SLAC signs in all ;patients as follows: stage I, 29% stage IIa, 42% and stage IIb, 29%. CONCLUSIONS: In patients with complete disruption of the SL ligament there is a rapid onset of arthritic lesions in the wrist detectable by radiography. Arthroscopic examination, however, shows a much higher extent of damage to cartilage of the wrist. Key words: wrist arthritis, scapholunal instability, arthroscopy of the wrist.

[Perilunar dislocation of the corpus in a patient with aplasia of the scaphoid]. / Perilunátní luxace karpu u pacienta s aplazií skafoidea.

Congenital aplasia of the scaphoid is a rare abnormality arising when the distal row of carpal bones is dislocated radially and proximally, the capitate replaces the scaphoid, and the lunate is triangular instead of quadrilateral in shape. The scaphoid bone which makes a functional bridge between the proximal and the distal row is a stabilising element under normal anatomical conditions. If it is absent, the carpus structure is disturbed and its radial part is prone to perilunar dislocation, because stability is provided only by the ligaments. However, a perilunar dislocation associated with aplasia of the scaphoid has not been described in the literature yet. In the case reported here, after arthroscopic examination ascertaining that the capsular ligaments are not interposed between the joints, the dislocation was managed by closed reduction and Kirschner wire transfixation for 8 weeks, and the wrist was immobilised with a below-elbow plaster splint for the same period. A 22-month follow-up did not show any signs of wrist instability or restriction in hand function.

[Chronic lunotriquetral instability of the wrist. Presentation of our method of treatment]. / Chronické lunotriquetrální nestability zápestí--vlastní metoda osetrení

PURPOSE OF THE STUDY: One of the causes of pain on the ulnar side of the wrist is post-traumatic lunotriquetral (LTq) instability, which is difficult to detect on radiographs. For diagnosis, arthroscopic examination is most reliable. The methods for treatment of LTq instability include mere immobilization, ligament reconstructions and LTq joint stabilization with Kirschner's wires in acute conditions, and stabilization of the LTq joint by tenodesis or arthrodesis. In this study our method of treating chronic isolated injury to the lunotriquetral ligament is described. MATERIAL: The group comprised 43 wrists with isolated lunotriquetral ligament injuries diagnosed by arthroscopy. In 19 patients with persisting complaints, stabilization was performed using our original method. At 4 months after surgery, the results were evaluated by the method of Green and O'Brien. METHODS: Access to the LTq joint was gained through the fifth extensor compartment. At about 3 cm proximal to the ulnar head, one third of the extensor capri ulnaris (ECU) tendon was detached, without doing damage to the tendinous sheath on the ulnar head, and stretched distally up to the triquetrum-hamate joint level. Using a 3.2-mm drill, a tunnel was made on the dorsal side of the triquetrum, starting at the distal third of the ulnar side of the triquetrum and opening at the attachment site of the dorsal LTq ligament. In the middle part of the dorsal side of the lunate, a groove 4 mm deep and 6 mm long was made with a cutter and a two-suture Mitek anchor was inserted in its radial side. The graft was passed through the tunnel in the triquetrum, tightened up and inserted in the groove on the lunate, and sutured to the anchor. The rest of the tendon was reinserted to the ECU tendon. After suturing the dorsal structures and skin, a high plaster cast reaching up above the elbow was applied for 4 weeks, followed by application of a short plaster splint for another 2 weeks. RESULTS: Using the method of Green and O'Brien, we assessed pain, function (return to full activity), range of motion and grip strength. An excellent result was recorded in 48%, good in 42% and satisfactory in 10% of the patients; there were no poor results. DISCUSSION: Our method gives better results than the published methods of tenodesis, because it secures stability of both the triquetrum and lunate bones. Also, these methods restrict motion to a lesser degree than LTq joint arthrodesis. CONCLUSIONS: LTq instability of the wrist is a limiting condition for the patient's daily activities. It appears when, for gripping, the hand is positioned in dorsal flexion and ulnar duction. The diagnosis and therapy are complicated and only arthroscopy is reliable for LTq instability detection. The method described here provides an option for treating this disorder with good outcome and, in case of failure, does not interfere with a subsequent LTq joint arthrodesis.

[Proximal row carpectomy in the treatment of degenerative arthritis of the wrist]. / Proximální karpektomie v lécbe poúrazových degenerativních zmen zápestního kloubu.

PURPOSE OF THE STUDY: To evaluate the outcome in patients treated by proximal row carpectomy at a follow-up of at least 12 months. MATERIAL: A total of 28 patients were treated by proximal row carpectomy for degenerative arthritis of the wrist due to previous trauma to the wrist or avascular necrosis of the lunate. Of them, 24 underwent a follow-up examination at least 12 months post-operatively. Proximal row carpectomy was indicated in 11 patients for scaphoid non-union advance collapse (SNACwrist), in five patients for scapholunate advanced collapse (SLAC-wrist), in four patients for inveterate dislocation of the wrist, and in four patients for avascular necrosis of the lunate. Ten patients with proximal row carpectomy were simultaneously treated by partial resection of the posterior interosseous nerve and two patients by limited radial styloidectomy. In one patient we performed distraction resection arthroplasty of the wrist using the Fitzgerald method. METHODS: The follow-up clinical and radiological examinations were performed after a minimum of 12 months post-operatively.We evaluated the range of wrist motion, grip strength, the presence of resting pain and pain dusing physical activities and the patient's satisfaction with the treatment outcome. By radiological examination we assessed radiocapitate joint degeneration and translation of the capitate bone in relation to the lunate facet of the radius. The differences between the results of pre- and post-operative clinical examinations were statistically evaluated using the Student's t-test, Sign test, Mann-Whitney test, and Wilcoxon signed rank test. The results were considered to be significant if p < 0.05. RESULTS: Improvements in the range of motion in the flexion-extension arch, dorsal flexion, radial deviation and grip strength, expressed as percentages of these values for the opposite, unaffected wrist, were statistically significant. The differences in palmar flexion and ulnar deviation were statistically insignificant. Pain relief at rest and during physical activities was statistically significant. At the follow-up examination most patients (87.5%) reported an overall improvement. The difference in overall improvements between the patients with and without partial resection of the posterior interosseous nerve was not statistically significant. DISCUSSION: The advantages of this procedure involve its technical simplicity, maintenance of wrist motion, satisfactory grip strength and pain relief, and a relatively low occurrence of post-operative degenerative wrist changes. These changes are not in correlation with functional complaints. CONCLUSIONS: As shown by our results as well as published data, proximal row carpectomy is an effective surgical procedure for the treatment of degenerative arthritis of the wrist for its technical simplicity and favourable functional outcomes. Key words: proximal row carpectomy, SNAC-wrist, SLAC-wrist, avascular necrosis of the lunate, dislocation of the wrist, posterior interosseous nerve resection.

Interlocking nailing of forearm fractures.

AIM OF THE STUDY: The aim of this retrospective study is to evaluate the results after treating diaphyseal fractures of the radius and ulna with an interlocking intramedullary nail. MATERIALS AND METHODS: Between 2001 and 2005, 78 patients with 118 fractures were treated using the ForeSight intramedullary nail (Smith & Nephew, Memphis, USA). The average patient age was 37.02 years. In the postoperative period, early and late complications were evaluated through radiological and functional methods. The average period of follow-up was 25 months (range: 12-58 months). RESULTS: The average length of time to demonstrated bone healing was 14.2 weeks. Four cases of prolonged healing were observed. Pseudo-arthrosis formation did not occur. Assessment of function according to Anderson gave the following results: full range of movement in 88.6% of patients; mild restriction of movement in 10.1%; severe restriction of movement in 1.3% of patients. The implanted material was extracted from 27 patients. Refractures did not occur. Postoperative complications included: 1 superficial infection, 3 cases of incomplete radio-ulnar synostosis; one case of compartment syndrome. CONCLUSIONS: Upon comparing the techniques of using plates with those of nailing in the treatment of forearm fractures, we have achieved comparable results with nailing. We therefore regard it as advantageous, in particular for treating open, serial and grossly comminuted fractures of the forearm bones.

[Treatment of intracapsular fractures of the femoral neck with a biaxial proximal femoral nail]. / Versorgung der Schenkelhalsfrakturen mit einem biaxialen proximalen Femurnagel.

BACKGROUND: Intracapsular fractures of the femoral neck are mostly treated using individual cancellous screws or a dynamic hip screw in combination with anti-rotational cancellous screws. The goal of this study was to evaluate the possibility of using proximal femoral nails for the surgical stabilisation of intracapsular fractures of the femoral neck. METHODS: A total of 58 patients (30 male, 28 female) were evaluated in a retrospective study after a minimum postoperative follow-up of 24 months. The average length of time after surgery was 33.1 months. According to the AO classification, the following numbers of type 31B intracapsular fractures of the femoral neck were included in the study: by number, 20 cases of type 31B1, 12 cases of type 31B2 and 26 cases of 31B3. The biaxial proximal femoral nail (Targon PF, B. Braun, Aesculap(R), Germany) was the tested implant and was inserted using standard surgical techniques. RESULTS: No complications in healing were noted in 48 patients (82.8% of the study group) 2 years following injury. The most frequent complication found was avascular necrosis of the head in seven patients (12.1%). Pseudoarthrosis formation was seen in two patients (3.4%), and other severe peroperative complications were observed in two other patients (3.4%). Reoperations were indicated in five patients, all of whom received a total hip endoprosthesis. We did not observe any refracture in the area of the implant. After 12 months 83% of the patients stated that they felt no or little pain. CONCLUSION: The results of our study have proven that the Targon PF biaxial proximal femoral nail may be used in treating intracapsular fractures of the femoral neck.

[Open posterior dislocation of the elbow with fractures of the radial head and coronoid process and multiple diaphyseal fractures of the ulna]. / Offene posteriore Dislokation des Ellbogens mit Frakturen des Caput radii, des Processus coronoideus und mehrfachen Diaphysenfrakturen der Ulna.

A healthy, right-handed 34-year-old man was injured by repeated direct blows delivered to his left upper arm with a baseball bat. These blows led to a posterior dislocation of the elbow joint, associated with fractures of the radial head and the coronoid process. There was bone loss on the fractured joint surface of the olecranon, with simultaneous ipsilateral trauma to the ulna. The correct surgical approach in the case of such fractures is still the subject of some controversy. The treatment can have serious complications. The results of treatment are often poor, especially because of persisting instability and stiffness of the elbow following a long period of immobilisation. Few studies have been concentrated on this topic up to now. We report on the functional and radiological results 24 months after the treatment of this rare, open "shock triad in the elbow."

[Treatment of intracapsular femoral neck fractures with the use of a proximal femoral nail]. / Resení intrakapsulárních zlomenin krcku femuru pomocí proximálního femorálního hrebu.

PURPOSE OF THE STUDY: The management of intracapsular femoral neck fractures remains an unsolved issue of the present-day trauma surgery of the musculoskeletal system. These fractures are conventionally treated with the use of spongious screws or a dynamic hip screw combined with an antirotational spongious screw. The aim of this study was to evaluate the outcomes of surgical therapy using a different type of implant (proximal femoral nail) for intracapsular femoral neck fractures. MATERIAL: From January 2000 to March 2004, intracapsular fractures were treated with the use of a proximal femoral nail in 70 patients. In this retrospective study, 56 patients (28 men and 28 women) were evaluated at a minimum of 12 months after surgery. The average follow-up was 22.4 months. According to the AO classification, the fractures were categorized as 31- B1 in 20, 31-B2 in 12 and 31-B3 in 24 patients. METHODS: The implant used was a bi-axial proximal femoral nail (Targon PF, B. Braun Aesculap, Germany) inserted by the standard surgical procedure. RESULTS: In 33.3 % of the patients the operative stabilization was performed early, within 6 hours of injury, in 51.8 % the operation was carried out within 24 hours, and 14.3 % of the patients underwent surgery later than 24 hours after injury. At one year after injury, fracture union without complications was recorded in 45 patients (80 %). Complications included avascular necrosis of the femoral head in seven patients (12.5 %), pseudoarthrosis in two patients (3.6 %) and other serious complications in two patients (3.6 %). Reoperations were indicated in five patients, and these underwent total hip replacement. No refracture occurred in the vicinity of the implant. No or little pain after the implantation procedure, as assessed at 12 months and later, was reported by 83 % of the patients. The patients in whom fracture union was achieved without complications were allowed to walk with full weight-bearing at 13.8, 16.4 and 20.4 weeks, when their injury was 31-B1, 31-B2 and 31-B3, respectively. CONCLUSIONS: Our results show that the bi-axial proximal femoral nail (Targon PF, B. Braun Aesculap, Germany) is useful for management of intracapsular femoral head fractures because of the following advantages: it eliminates the risk of lateral protrusion of the implant, it allows for even distribution of weight bearing and thus reduces the risk of pseudoarthrosis development, it has a low probability of the sliding screw getting jammed.

[Scapholunate instability of the wrist following distal radius fracture]. / Skafolunátní nestability zápestí po zlomeninách distálního radia.

PURPOSE OF THE STUDY: Scapholunate (SL) ligament disruption frequently occurs together with distal radius fractures. If it is not diagnosed and treated, instability develops and will eventually be manifested as arthritic lesions known as scapholunate advanced collapse (SLAC) of the wrist. The aim of this study was to record the occurrence of SL ligament disruption in the patients treated conservatively for displaced fractures of the distal radius and to find out which fracture types are most often associated with injury to the SL ligament. MATERIAL AND METHODS: A total of 75 patients treated conservatively for distal radius fractures in 1997-98 were included in the study. The group comprised 41 women and 34 men, with fractures of the right upper limb in 44 and fractures of the left upper limb in 31 patients. They all were at active age, i. e., between 18 and 60 years, and came for a check-up 3 years after injury. They were examined for radiographic findings of SL instability and signs of SLAC development. Radiographs obtained after injury and images taken after reduction and then after bone union were retrospectively evaluated to look for signs of SL instability. The initial fractures were categorized on the AO classification and, for each fracture type, the percent of patients with co-existent SL instability was assessed. RESULTS: In the group of 75 patients examined at 3 years after injury, 16 (27 %) wrists showed radiographic signs of instability, with SLAC development in 13 patients and no arthritic lesions in three. All patients with SL instability reported pain, restricted range of motion in the wrist or reduced grip strength. The distribution of instability in relation to AO fracture type, expressed as percent, was as follows: SL instability associated with type A2 fracture was found in 38 %, with type A3 fracture in 17 %, and with type B in 25 % of the patients. SL instability was associated with type C1, type C2 and type C3 in 21 %, 27 % and 8 % of the patients, respectively. In radiographs taken after reduction, signs of damage to the SL ligament were apparent in 56 % of these patients. Radiographic findings at 6 weeks after injury showed signs of SL instability in as many as 81 % of the patients. DISCUSSION: Our results show that SL instability is found in association with type A2 and type A3 fractures, in which trauma force is "used" to break the distal radius and subsequently, due to carpal supination, to disrupt the SL ligament. In type B1 fractures, SL disruption results from an avulsion fracture of the radial styloid process due to ulnar deviation of the wrist. The retrospective evaluation of radiographs revealed that, immediately after reduction, signs of SL instability were obvious in 56 % of the cases. At that stage the condition could have been treated by K-wire transfixation and reattachment of the SL ligament. At 6 weeks, radiographic evidence of SL ligament disruption was found in 81 % of the patients. Even at that stage repair would have been possible by either reattachment or reconstruction of the ligament. It is apparent from these results that the evaluation of radiographic findings after reduction and during follow-up should also focus on other changes in the wrist in addition to signs of bone union. CONCLUSIONS: Fractures of the distal radius are no longer frequent only in elderly women, as has recently been common, but they are found more and more often in active young persons. Because their bones are healthier, soft tissues are affected more frequently. Injury to the SL joint results in the development of arthritic lesions which may rapidly progress in active patients. SLAC development can be prevented by early diagnosis of soft tissue lesions on X-ray images, because these are usually apparent after reduction or at follow-up. If doubts arise, arthroscopy or another examination should be done, even though these may not be sufficiently reliable.