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1.
Eur Psychiatry ; 64(1): e70, 2021 11 04.
Article in English | MEDLINE | ID: mdl-34732271

ABSTRACT

BACKGROUND: Accumulating evidence suggests beneficial effects of media stories featuring individuals mastering their suicidal crises, but effects have not been assessed for psychiatric patients. METHODS: We randomized n = 172 adult psychiatric patients (n = 172, 97.1% inpatients) to read an educative article featuring a person mastering a suicidal crisis (n = 92) or an unrelated article (n = 80) in a single-blind randomized controlled trial. Questionnaire data were collected before (T1) and after exposure (T2) as well as 1 week later (study end-point, T3). The primary outcome was suicidal ideation as assessed with the Reasons for Living Inventory; secondary outcomes were help-seeking intentions, mood, hopelessness, and stigmatization. Differences between patients with affective versus other diagnoses were explored based on interaction tests. RESULTS: We found that patients with affective disorders (n = 99) experienced a small-sized reduction of suicidal ideation at 1-week follow up (mean difference to control group [MD] at T3 = -0.17 [95% CI -0.33, -0.03], d = -0.15), whereas patients with nonaffective diagnoses (n = 73) experienced a small-sized increase (T2: MD = 0.24 [95% CI 0.06, 0.42], d = 0.19). Intervention group participants further experienced a nonsustained increase of help-seeking intentions (T2: MD = 0.53 [95% CI 0.11, 0.95], d = 0.19) and a nonsustained deterioration of mood (T2: MD = -0.14 [95% CI -0.27, -0.02], d = -0.17). CONCLUSIONS: This study suggests that patients with affective disorders appear to benefit from media materials featuring mastery of suicidal crises. More research is needed to better understand which patient groups are at possible risk of unintended effects.


Subject(s)
Suicidal Ideation , Suicide , Adaptation, Psychological , Adult , Humans , Mood Disorders , Single-Blind Method , Surveys and Questionnaires
2.
Eur Psychiatry ; 63(1): e55, 2020 05 11.
Article in English | MEDLINE | ID: mdl-32389135

ABSTRACT

BACKGROUND: Seasonal patterns in hospitalizations have been observed in various psychiatric disorders, however, it is unclear whether they also exist in schizophrenia. Previous studies found mixed results and those reporting the presence of seasonality differ regarding the characteristics of these patterns. Further, they are inconclusive whether sex is an influencing factor. The aim of this study was therefore to examine if seasonal patterns in hospitalizations can be found in schizophrenia, with special regard to a possible influence of sex, by using a large national dataset. METHODS: Data on all hospital admissions within Austria due to schizophrenia (F20.0-F20.6) for the time period of 2003-2016 were included. Age standardized monthly variation of hospitalization for women and men was analyzed and the level of significance adjusted for multiple testing. RESULTS: The database comprised of 110,735 admissions (59.6% men). Significant seasonal variations were found in the total sample with hospitalization peaks in January and June and a trough in December (p < 0.0001). No significant difference in these patterns was found between women and men with schizophrenia (p < 0.0001). CONCLUSION: Our study shows that schizophrenia-related hospitalizations follow a seasonal pattern in both men and women. The distribution of peaks might be influenced by photoperiod changes which trigger worsening of symptoms and lead to exacerbations in schizophrenia. Further research is necessary to identify underlying factors influencing seasonal patterns and to assess whether a subgroup of patients with schizophrenia is especially vulnerable to the impact of seasonal variations.


Subject(s)
Patient Admission/statistics & numerical data , Registries/statistics & numerical data , Schizophrenia/epidemiology , Seasons , Adult , Austria , Female , Humans , Male , Middle Aged , Schizophrenia/therapy , Severity of Illness Index , Young Adult
3.
Orthopade ; 31(3): 250-4, 2002 Mar.
Article in German | MEDLINE | ID: mdl-12017849

ABSTRACT

In cases of injuries to the shoulder region, ultrasonography is an ideal supplement to clinical and radiologic examination, including dynamic functional evaluation. The advantages of the method in children and adults are mainly the reduction of conventional radiographs and thus a minimum exposure to radiation. Despite the growing experience of clinicians and the development of high-resolution sonographic technology, primary conventional radiology cannot be dispensed with. Moreover, sonographic examination is rather time-consuming. Evaluation of the subacromial space and the glenohumeral joint itself is impossible in adults, and diagnosis of lesions to the labrum and the articular capsule requires a great deal of experience on the part of the clinician. Ultrasonography has gained increasing importance in the evaluation and follow-up of shoulder trauma in adults and children.


Subject(s)
Shoulder Injuries , Adult , Artifacts , Child , Diagnosis, Differential , Female , Humans , Male , Sensitivity and Specificity , Shoulder/diagnostic imaging , Shoulder Dislocation/diagnostic imaging , Shoulder Fractures/diagnostic imaging , Ultrasonography
4.
Orthopade ; 31(2): 143-53, 2002 Feb.
Article in German | MEDLINE | ID: mdl-11963479

ABSTRACT

The aim of this paper is to report on the possibilities of ultrasonography of the musculoskeletal system following traumatic injuries. Subsequent to clinical and radiologic examination, ultrasonography is able to confirm the primary diagnosis by dynamic comparison with a minimal expenditure of time and costs. The size, extent, and anatomic topography of tissue lesions are depicted. This paper focuses especially on the diagnosis of fluid within joints and soft tissues, the identification of foreign bodies, the diagnosis and follow-up of fractures, the diagnosis of infections (possibility of sonographically guided puncture), and musculotendinous injuries. Furthermore, the use of ultrasonography for the evaluation of postoperative pain and complications, the preoperative planning of metal removals, and its performance during spinal surgery are discussed. This paper deals with indications and technical tips for sonography as well as methodological limitations and sources of error in the evaluation of ultrasonographic findings.


Subject(s)
Fractures, Bone/diagnostic imaging , Soft Tissue Injuries/diagnostic imaging , Wounds and Injuries/diagnostic imaging , Adult , Bony Callus/diagnostic imaging , Child , Follow-Up Studies , Foreign Bodies/diagnostic imaging , Fracture Fixation, Internal/instrumentation , Fracture Fixation, Internal/methods , Fracture Healing , Hematoma/diagnostic imaging , Humans , Infections/diagnostic imaging , Male , Spinal Injuries/diagnostic imaging , Tendon Injuries/diagnostic imaging , Ultrasonography
5.
J Hand Surg Br ; 26(3): 269-71, 2001 Jun.
Article in English | MEDLINE | ID: mdl-11386784

ABSTRACT

We report the case of an irreparable fracture - dislocation of the ulnar head with a concomitant fracture of the radius (Galeazzi lesion), treated by implantation of a Herbert Ulnar Head Prosthesis((R)). A stable distal radio-ulnar joint was achieved by careful dissection of a posterior soft tissue flap and accurate reduction of the radius.


Subject(s)
Joint Dislocations/surgery , Joint Prosthesis , Radius Fractures/surgery , Ulna Fractures/surgery , Wrist Injuries/surgery , Adult , Fracture Fixation, Internal , Humans , Joint Dislocations/diagnostic imaging , Male , Postoperative Complications/diagnostic imaging , Radiography , Radius Fractures/diagnostic imaging , Range of Motion, Articular/physiology , Ulna Fractures/diagnostic imaging , Wrist Injuries/diagnostic imaging
6.
Arthroscopy ; 16(1): 41-8, 2000.
Article in English | MEDLINE | ID: mdl-10627344

ABSTRACT

SUMMARY: A randomized clinical trial was conducted to compare a bioabsorbable polyglyconate screw (Endo-Fix; Smith & Nephew, Andover, MA) to a metal screw in anterior cruciate ligament reconstruction. A total of 124 patients were operated on and 113 assessed up to 1 year postoperatively. Assessments included a history and physical examination, the IKDC evaluation, and knee arthrometry measurements. No significant differences were found between the groups with respect to any of the IKDC problem areas at 1 year. The IKDC final evaluation was normal or nearly normal in 92% of polyglyconate patients and 90% of controls. The incidence of postoperative complications was similar in the 2 groups. One polyglyconate patient developed a subcutaneous cyst that may have been related to breakdown of the screw. This resolved without treatment and the patient had an excellent clinical outcome. This study shows that the polyglyconate screw is an effective alternative to metal in endoscopic reconstruction of the ACL.


Subject(s)
Absorbable Implants , Anterior Cruciate Ligament/surgery , Arthroscopy/methods , Bone Screws , Polymers , Adolescent , Adult , Anterior Cruciate Ligament/diagnostic imaging , Anterior Cruciate Ligament/pathology , Anterior Cruciate Ligament Injuries , Arthrography , Female , Humans , Intraoperative Complications , Knee Injuries/diagnostic imaging , Knee Injuries/pathology , Knee Injuries/surgery , Male , Middle Aged , Postoperative Complications , Prospective Studies , Prosthesis Design , Safety , Treatment Outcome
7.
Article in English | MEDLINE | ID: mdl-10525704

ABSTRACT

Since 1993, we have treated 30 patients with acute intra-articular distal radius fractures using arthroscopic assistance. Concomitant lesions of the intrinsic scapholunate (SL) ligaments were diagnosed in 12 patients (40%). Using the grading system of Geissler et al. [13], the identified lesions included a single grade I tear, three grade II, six grade III, and two grade IV. The grade III and IV lesions were accompanied by intraoperative findings of marked instability. Therefore operative stabilization was performed by temporary scapholunate and scaphocapitate arthrodesis. Seven patients in this group (87.5%) were followed up clinically and radiologically for an average of 3 years postoperatively. Clinical examination included range of motion and a subjective questionnaire concerning pain and ability to work. Objective grip strength was measured using a Jamar-tester and compared to the contralateral wrist. Radiological evaluation consisted of posteroanterior and lateral views and of stress views in radial and ulnar deviation. Data were evaluated by the scoring systems of Jakim et al. [21], Cooney et al. [5] and by the demerit point system of Gartland and Werley [12], as modified by Sarmiento et al. [36]. An excellent result was present in 100% of our patients by the Gartland and Werley system, in 86% by that of Jakim et al., and in 60% by that of Cooney et al. Based on a subjective questionnaire, all of the patients had an excellent or good result.


Subject(s)
Arthroscopy , Carpal Bones , Ligaments, Articular/injuries , Lunate Bone , Radius Fractures/surgery , Wrist Injuries/surgery , Adult , Aged , Aged, 80 and over , Arthrodesis , Female , Follow-Up Studies , Hand Strength/physiology , Humans , Joint Instability/etiology , Male , Middle Aged , Pain, Postoperative/etiology , Patient Satisfaction , Radiography , Radius/diagnostic imaging , Radius Fractures/diagnostic imaging , Radius Fractures/physiopathology , Range of Motion, Articular/physiology , Rupture , Stress, Mechanical , Surveys and Questionnaires , Ulna/diagnostic imaging , Wrist Injuries/diagnostic imaging , Wrist Injuries/physiopathology , Wrist Joint/diagnostic imaging , Wrist Joint/physiopathology , Wrist Joint/surgery
8.
Clin Anat ; 12(3): 179-85, 1999.
Article in English | MEDLINE | ID: mdl-10340458

ABSTRACT

Eight portals are used for wrist arthroscopy, five for the radiocarpal joint and three for the midcarpal space. These portals pass between important vessels and cutaneous nerves and the extensor tendons underlying the extensor retinaculum and permit access to the common pathologies of the wrist joints. The portals can be safely established making precise use of the external landmarks and are associated with little soft tissue damage and few complications when performed gently and through the dorsal side of the wrist.


Subject(s)
Arthroscopy/methods , Wrist Joint/anatomy & histology , Wrist Joint/surgery , Carpal Bones/anatomy & histology , Humans , Radius/anatomy & histology
9.
Surg Radiol Anat ; 21(5): 347-50, 1999.
Article in English | MEDLINE | ID: mdl-10635100

ABSTRACT

Up to 30% of all operative procedures in orthopaedic surgery are performed arthroscopically. Because of the steadily increasing number of residents, it seems to be difficult both to maintain high standards and to guarantee an adequate training in arthroscopic surgery. However, in contrast to many other surgical techniques it is possible to learn and practice arthroscopy using artificial models and cadaver joints, provided that experienced surgeons and anatomists act as supervisors and instructors. The aim of this paper is to assess practice models and training programs which should guarantee sufficient practical experience during the training period.


Subject(s)
Arthroscopy , Education, Medical, Continuing , Orthopedics/education , Humans
10.
Arch Orthop Trauma Surg ; 117(6-7): 368-71, 1998.
Article in English | MEDLINE | ID: mdl-9709853

ABSTRACT

Sonographic studies were performed on cadaveric bones placed in a water bath, using 7.5-MHz linear-array transducers and 3.5-MHz sector transducers. Depending on its size, the defect was revealed as an interruption of the cortical reflection of echo or a dorsal band of echoes confined to the region of the fracture. It was interesting to note that fractures and bony defects are not visualized when the transducer is placed parallel to the fracture line or the zone of bony impaction. A further remarkable aspect was the numerous artefacts adjacent to each other at several fracture margins. It may be concluded that in an experimental setting and under standardized conditions, high-resolution transducers permit the examiner to detect cortical discontinuities of 1 mm or more.


Subject(s)
Bone and Bones/diagnostic imaging , Fractures, Bone/diagnostic imaging , Ultrasonography/methods , Bone and Bones/anatomy & histology , Cadaver , Humans , Sensitivity and Specificity
11.
Radiologe ; 38(5): 378-89, 1998 May.
Article in German | MEDLINE | ID: mdl-9646344

ABSTRACT

The aim of this study was to evaluate the sonographic anatomy of the elbow joint in children and adults and to point out the indications for an ultrasound examination after elbow joint trauma. The study was carried out using isolated joint specimens, muscle specimens and cadaver limbs. Additionally, a clinical trial was performed using high-resolution ultrasound probes (7.5-12 MHz). When assessing standard sections, one has to consider both the position of the elbow joint in the frontal plane and the position of the forearm during pro- and supination. The outstanding advantage of this method, especially in children, is the possibility of a dynamic examination with evaluation of the articular cartilage and with a comparison to the healthy contralateral elbow joint.


Subject(s)
Elbow Joint/diagnostic imaging , Fractures, Cartilage/diagnostic imaging , Joint Dislocations/diagnostic imaging , Adult , Cartilage, Articular/diagnostic imaging , Cartilage, Articular/injuries , Cartilage, Articular/pathology , Child , Diagnosis, Differential , Elbow Joint/pathology , Female , Fractures, Cartilage/pathology , Humans , Joint Dislocations/pathology , Male , Sensitivity and Specificity , Ultrasonography , Elbow Injuries
12.
Invest Radiol ; 33(5): 273-8, 1998 May.
Article in English | MEDLINE | ID: mdl-9609486

ABSTRACT

RATIONALE AND OBJECTIVES: The objective of this investigation was to determine the diagnostic accuracy of wrist arthrography in the detection of interosseous ligament disruptions and of triangular fibrocartilage complex (TFCC) lesions in patients after acute wrist trauma and to define the sources of diagnostic error of wrist arthrography after recent trauma. METHODS: Twenty-two patients with radial fractures after acute wrist trauma underwent arthrography and arthroscopy of the wrist. Arthrography was performed in a standardized manner by two- or three-compartment injection technique. Subsequently wrist arthroscopy was performed within the same session. Image analysis included the evaluation of interosseous carpal ligaments, the TFCC, and the osseous structures. RESULTS: In 22 patients, 11 injuries of the intrinsic ligaments and the TFCC were diagnosed by arthroscopy, of which 9 had been diagnosed correctly with arthrography before surgery. One scaphoid fracture previously missed on conventional radiographs also could be diagnosed by arthrography. CONCLUSION: Arthrography of the posttraumatic wrist is a valuable tool in the diagnostic evaluation of interosseous carpal ligaments and the TFCC.


Subject(s)
Arthrography/methods , Cartilage, Articular/injuries , Ligaments, Articular/injuries , Radius Fractures/diagnostic imaging , Wrist Injuries/diagnostic imaging , Adult , Arthroscopy , Cartilage, Articular/diagnostic imaging , Contrast Media , Diagnostic Errors , Female , Humans , Ligaments, Articular/diagnostic imaging , Male , Middle Aged , Radius Fractures/therapy , Wrist Joint/diagnostic imaging
13.
Arthroscopy ; 14(2): 221-3, 1998 Mar.
Article in English | MEDLINE | ID: mdl-9531137

ABSTRACT

We report the case of a 36-year-old male patient who sustained a hyperextension trauma of the left knee. After performing diagnostic arthroscopy (partial tear of the anterior cruciate ligament) and partial resection of the anterior cruciate ligament, the patient experienced a complete paralysis of the peroneal nerve. One year after the first surgical procedure, a reconstructive repair of the peroneal nerve and a transfer of the anterior tibial muscle was performed. This complication is reported for the first time in literature.


Subject(s)
Intraoperative Complications/etiology , Knee Injuries/surgery , Peroneal Nerve/injuries , Adult , Anterior Cruciate Ligament/surgery , Anterior Cruciate Ligament Injuries , Arthroscopy/adverse effects , Cadaver , Endoscopy/adverse effects , Humans , Intraoperative Complications/pathology , Male , Paralysis/etiology
14.
Arthroscopy ; 13(3): 370-4, 1997 Jun.
Article in English | MEDLINE | ID: mdl-9195037

ABSTRACT

The advantages of arthroscopically assisted treatment of intraarticular distal radius fractures, especially the detection of additional carpal lesions, also focus attention on special surgical techniques for operating on these injuries within the same session. When we consider the biomechanical situation, various kinds of triangular fibrocartilage complex (TFCC) lesions, and their arthroscopic aspects, there are probably two possibilities for surgical treatment that are similar to arthroscopic meniscal surgery: resection of flap tears and the refixation of peripherally disinserted TFCC. Avulsions from the ulnar styloid or from the ulnar collateral ligament and the extensor carpi ulnaris tendon can easily and satisfactorily be treated by convenient arthroscopic suture techniques, whereas the reattachment of the triangular disc in the sigmoid notch is very tricky. This problem is solved by a recently developed procedure using the so-called T-Fix-device (Acufex), which provides the possibility of transosseus refixation by closed arthroscopic procedure and therefore guarantees the principle of minimal invasive surgery.


Subject(s)
Arthroscopy/methods , Cartilage, Articular/injuries , Cartilage, Articular/surgery , Wrist Injuries/surgery , Arthroscopes , Humans , Radius Fractures/complications , Suture Techniques/instrumentation
15.
Unfallchirurg ; 100(6): 430-7, 1997 Jun.
Article in German | MEDLINE | ID: mdl-9333952

ABSTRACT

The final result of the treatment of distal intraarticular radius fractures depends both on the accuracy of the fracture reduction and on the presence or absence of additional carpal injuries. In particular, lesions of the intrinsic ligaments usually cause severe degenerative damage of the wrist joint if they are missed primarily. With the introduction of wrist arthroscopy these tears can be evaluated and treated earlier. Since 1993 arthroscopically assisted treatment has been performed in 23 patients with distal intraarticular fractures of the radius (mainly C fractures according to the AO classification system or group VII and VIII fractures according to Frykman). SL tears have been found in 11 patients (47.8%), 7 of whom showed marked instability and were stabilised at the time of surgery.


Subject(s)
Arthroscopes , Carpal Bones/injuries , Endoscopes , Ligaments, Articular/injuries , Lunate Bone/injuries , Radius Fractures/surgery , Wrist Injuries/surgery , Adolescent , Adult , Aged , Aged, 80 and over , Carpal Bones/diagnostic imaging , Carpal Bones/surgery , Female , Fracture Fixation, Internal/instrumentation , Humans , Ligaments, Articular/diagnostic imaging , Ligaments, Articular/surgery , Lunate Bone/diagnostic imaging , Lunate Bone/surgery , Male , Middle Aged , Minimally Invasive Surgical Procedures/instrumentation , Postoperative Complications/diagnostic imaging , Radiography , Radius Fractures/diagnostic imaging , Surgical Equipment , Surgical Instruments , Wrist Injuries/diagnostic imaging
16.
Radiologe ; 37(4): 322-9, 1997 Apr.
Article in German | MEDLINE | ID: mdl-9265218

ABSTRACT

METHOD: In an experimental study on ten isolated human cadaver tendons, the ultrasound anatomy and the reproducibility of artefacts was determined using 10- and 13-MHz probes. With these in vitro data, the form and diameter of a non-injured tendon were documented in a series of 30 patients between 3 and 60 years old. In a second series of 32 patients with acute, traumatic ruptures of the Achilles tendon and 40 patients with chronic disorders, we distinguished the pathological anatomy. RESULTS: Injuries to a tendon with chronic disorders, reruptures and complications in the postoperative period after tendon repair can be made more difficult by calcification, scars, oedema, haematoma and suture materials. It is necessary to check the changing ultrasound patterns owing to an haematoma or oedema with tendon carpulence, the missing linear signals in a fresh rupture and the different signals after operative or nonoperative treatment. CONCLUSION: Using high-frequency probes with 10 or more MHz, it is possible to examine even the insertion area of the tendon or the pathology of a subachilleal bursa by tilting the probe. The dynamic examination and the comparison with the contralateral side in two planes should be included in a standardized examination procedure and are of great importance in some cases of fresh tendon ruptures. Knowledge of the physical principles and the possibility of misleading artefacts is crucial.


Subject(s)
Achilles Tendon/injuries , Tendon Injuries/diagnostic imaging , Achilles Tendon/diagnostic imaging , Adolescent , Adult , Artifacts , Child , Child, Preschool , Female , Humans , Male , Middle Aged , Reference Values , Rupture , Ultrasonography
17.
Article in English | MEDLINE | ID: mdl-9335030

ABSTRACT

The final result of the treatment of distal intra-articular radius fractures depends both on the accuracy of the fracture reduction and on the presence of additional carpal injuries. In particular, lesions of the intrinsic ligaments usually lead to severe degenerative damage of the wrist joint if they are missed primarily. With the introduction of wrist arthroscopy, these tears can be evaluated and treated earlier. Since 1993 arthroscopically assisted treatment has been performed in 23 patients with distal intra-articular fractures of the radius (mainly C-fractures according to the AO classification system or group VII and VIII fractures according to Frykman). Scapholunate (SL) tears were found in 11 patients (47.8%), 7 of whom showed marked instability intraoperatively and were stabilised at the time of surgery.


Subject(s)
Endoscopy/methods , Ligaments/injuries , Ligaments/surgery , Radius Fractures/surgery , Adolescent , Adult , Aged , Aged, 80 and over , Arthroscopy/methods , Female , Humans , Male , Middle Aged , Radius Fractures/classification , Radius Fractures/diagnosis , Treatment Outcome , Wrist Injuries/diagnosis , Wrist Injuries/surgery
18.
Biomed Tech (Berl) ; 41(11): 308-15, 1996 Nov.
Article in German | MEDLINE | ID: mdl-9063952

ABSTRACT

In an experimental study, the US pattern of foreign materials such as are often found in wounds, was investigated. The exploration was carried out with the aid of high-resolution, mechanical US probes (10-12 MHz) used to examine foreign bodies placed in a gelatine bath and in the shoulder of a pig. The study showed that all foreign bodies that measured at least 1-2 mm in diameter were reliably detected. The intensity of the interface echoes was identical with all the materials employed, irrespective of the nature of the surface. However, the artefacts caused by the foreign bodies used revealed considerable differences. Complete acoustic shadow, acoustic attenuation, reverberation echoes and even "comet-tail" artefacts were observed. In clinical practice, familiarity with the artefacts that may be expected during sonographic exploration and localization of foreign bodies in wounds would seem to make good sense.


Subject(s)
Foreign Bodies/diagnostic imaging , Ultrasonography/instrumentation , Animals , Artifacts , Humans , Shoulder/diagnostic imaging , Swine , Transducers
19.
Biomed Tech (Berl) ; 41(10): 273-7, 1996 Oct.
Article in German | MEDLINE | ID: mdl-9019228

ABSTRACT

Heterotopic ossification is a non-neoplastic deposit of bone within soft tissue (myositis ossificans). The most common localized form is post-traumatic myositis ossificans. The ultrasonographic appearance of heterotopic ossification is characterized by highly echogenic areas with attenuation or complete disappearance of the acoustic signal distal to these areas. The size and extent of para-articular ossifications can also be evaluated, and the choice of the surgical approach is facilitated and damage to soft tissue minimized by the ultrasonographic examination.


Subject(s)
Myositis Ossificans/diagnostic imaging , Ossification, Heterotopic/diagnostic imaging , Soft Tissue Injuries/diagnostic imaging , Achilles Tendon/diagnostic imaging , Achilles Tendon/injuries , Humans , Muscle, Skeletal/diagnostic imaging , Muscle, Skeletal/injuries , Sensitivity and Specificity , Ultrasonography
20.
Unfallchirurgie ; 22(3): 117-23, 1996 Jun.
Article in German | MEDLINE | ID: mdl-8767382

ABSTRACT

In a first experimental study we investigated the visualisation of metal implants in reference to dimension, shape, material (titanium, steel, biodegradable screws) and surface structures and an eventual change of the echo pattern in correlation to the surrounding structures, the vicinity to bone and the change of the sound angle. For this purpose ultrasound investigation was performed in artificial and cadaver bones and in cadaver limbs after implantation of screws, plates, K-wires and cerclage wires. We found that metal implants of a certain dimension can be localised by typical artefacts (resonance artefact, comet tile artefact). In the following clinical study we investigated the value of ultrasound in finding and localisation of implants after osteosynthesis. In patients with 25 locking femur nailing, 30 locking tibia nailing, 30 osteosynthesis done by screws and plating, metal was easily localised by typical artefacts. Ultrasound examination gave the possibility to define the number of screws, the localisation to surrounding tissue, loosening of screws and eventual as sociated inflammatory tissue swelling (bursitis, tendovaginitis).


Subject(s)
Fracture Fixation, Internal/instrumentation , Fracture Fixation, Intramedullary/instrumentation , Metals , Postoperative Complications/diagnostic imaging , Prostheses and Implants , Bone and Bones/diagnostic imaging , Equipment Design , Humans , Ultrasonography
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