Custom-made reverse shoulder arthroplasty for severe glenoid bone loss: review of the literature and our preliminary results.

The treatment of severe glenoid bone loss in shoulder arthroplasty represents a challenge, and the results of current prosthetic designs with only glenoid fixation still remain unsatisfactory. In the past decade, customized glenoid prostheses have been developed to address severe glenoid arthritis and in the revision setting. In this review, we analyzed the current surgical options, the classification limits, past literature evidence, and our preliminary results of 6 patients (3 male, 3 female) treated with a reverse implant and custom-made glenoid implant (ProMade; LimaCorporate, Italy). Computer analysis of the residual shape and the amount of glenoid bone stock in association with new classifications could help the surgeon to obtain good clinical and radiological outcomes. The development of navigation systems could improve the adequacy of the implant and, thus, the reliability and longevity of the implant itself.

Comparison of CFR-PEEK and conventional titanium locking plates for proximal humeral fractures: a retrospective controlled study of patient outcomes.

BACKGROUND: Metal plates are the fixation devices used most frequently to proximal humeral fractures (PHFs). However, in recent years carbon fiber-reinforced polyetheretherketone (CFR-PEEK) plates have become increasingly common. This study compares the clinical and radiographic outcomes of 42 Neer three- and four-part PHFs treated with CFR-PEEK or metal (titanium) plates. MATERIALS AND METHODS: Forty-two PHF patients were managed with CFR-PEEK plates (n = 21, males/females 9/12; mean age 57.4 years; mean follow-up 30.7 months; CFR-PEEK group) or metal plates (n = 21; males/females 7/14; mean age 55.8 years; mean follow-up 52.7 months; Metal group). Active shoulder mobility (anterior elevation, lateral elevation, external rotation, and internal rotation), the Constant-Murley Score, the Simple Shoulder Test Score, and the pain score were recorded. Preoperative computed tomography scans and X-rays were obtained. Postoperative fracture healing and displacement, tuberosity resorption and/or malposition, hardware position, and cortical thinning (CT) under the plate were assessed radiographically. RESULTS: Shoulder mobility, clinical, and pain scores were similar in both patient groups. CT was significantly greater in CFR-PEEK patients (mean difference, 1.14 mm; p = 0.0003). In both groups, incomplete or poor calcar reduction was associated to a significantly higher complication rate, especially stiffness and muscle weakness (p = 0.016). The rate of tuberosity resorption was significantly higher in the Metal group (p = 0.040). Two patients required revision to a hemiarthroplasty (CFR-PEEK) and reverse arthroplasty (Metal group). CONCLUSIONS: CFR-PEEK plates provide a viable alternative to conventional titanium plates in PHFs, ensuring similar clinical outcomes and a lower rate of tuberosity resorption, but they involve higher stress shielding under the plate.

Assessment of return to play in professional overhead athletes subjected to arthroscopic repair of rotator cuff tears and associated labral injuries using the Italian version of the Kerlan-Jobe Orthopedic Clinic Shoulder and Elbow score.

BACKGROUND: The self-administered Kerlan-Jobe Orthopedic Clinic (KJOC) Shoulder and Elbow questionnaire is a reliable and sensitive outcome tool to assess upper extremity athletic performance and functional changes affecting return to play in overhead athletes. We report the results of a study of return to sport in professional overhead athletes at a mean follow-up of 2 years after arthroscopic repair of rotator cuff tears and associated labral injuries using the Italian version of the score. MATERIALS AND METHODS: A total number of 38 patients completed the 10-item questionnaire before and after surgery. They were also asked (1) whether they had returned to play; (2) how many months after the operation they had done so; (3) the level of postoperative performance (preinjury or less); and (4) whether they had had to change sport due to their shoulder problems. RESULTS: Significant differences were found (1) between preoperative and postoperative scores; (2) between the scores of patients who returned to play at preinjury level and those who merely returned to competition; and (3) between the postoperative subscores of 8/10 items, which were higher in the patients who returned to preinjury performance than in those who merely returned to play; the two items that were not significantly different between these subgroups concerned pain and joint stability. Even though item analysis highlighted a major role for athletic performance in recovery of preinjury performance, it also stressed that the athlete's relationship with coach, agent, and staff and his/her feeling of the extent to which the arm affects current performance significantly contribute to the final score. CONCLUSIONS: The KJOC Shoulder and Elbow score provides an accurate and exhaustive assessment of the recovery of the athlete's shoulder in relation to preinjury performance and provides the surgeon with key information on the pros and cons of surgical management.

Results of primary repair of distal triceps tendon ruptures in a general population: a multicentre study.

Aims: The aim of the study was to analyze the results of primary tendon reinsertion in acute and chronic distal triceps tendon ruptures (DTTRs) in the general population. Patients and Methods: A total of 28 patients were operated on for primary DTTR reinsertions, including 21 male patients and seven female patients with a mean age of 45 years (14 to 76). Of these patients, 23 sustained an acute DTTR and five had a chronic injury. One patient had a non-simultaneous bilateral DTTR. Seven patients had DTTR-associated ipsilateral fracture or dislocation. Comorbidities were present in four patients. Surgical treatment included transosseous and suture-anchors reinsertion in 22 and seven DTTRs, respectively. The clinical evaluation was performed using Mayo Elbow Performance Score (MEPS), the modified American Shoulder and Elbow Surgeons Score (m-ASES), the Quick Disabilities of the Arm, Shoulder and Hand score (QuickDASH), and the Medical Research Council (MRC) Scale. Results: A total of 27 patients (28 DTTRs) were available for review at a mean of 47.5 months (12 to 204). The mean MEPS, QuickDASH, and m-ASES scores were 94 (60 to 100), 10 (0 to 52), and 94 (58 to 100), respectively. Satisfactory results were observed in 26 cases (93%). Muscle strength was 5/5 and 4/5 in 18 and ten DTTRs, respectively. One patient with chronic renal failure experienced a traumatic rerupture of distal triceps. One patient (1 DTTR) experienced mild elbow stiffness. Conclusion: Primary repair of acute and chronic DTTRs in a general population yields satisfactory results in the majority of patients with a low rerupture rate. Cite this article: Bone Joint J 2018;100-B:610-16.

The experience of the RIPO, a shoulder prosthesis registry with 6-year follow-up.

BACKGROUND: Implant registries have proved valuable in assessing the outcomes of arthroplasty procedures. Moreover, by identifying lesser quality implants they have indirectly improved the quality of care. The registry of prosthetic shoulder implants was established in 2008. METHODS: It records information on all types of primary and revision arthroplasty procedures involving the glenohumeral joint, including reverse and total arthroplasty, hemiarthroplasty, resurfacing, removal, and any other surgical procedures that are required to manage these patients. The collected data include patient demographics, weight, height, operated side, cuff status, and diagnosis/reason for revision surgery, information on previous surgical procedures involving either shoulder, comorbidities, antibiotic and thromboembolic prophylaxis, blood transfusions, surgical approach, cuff repair procedures performed during arthroplasty, bone grafts, drains, and perioperative complications, and data about the prosthetic components implanted, including the fixation method. RESULTS: Procedures were performed on 3754 shoulders. They included 2226 RSA, 320 TSA, 730 HA, 233 resurfacing procedures, 245 revisions, and 77 "other" procedures. The survival curves of the implants are greater than 90%, and no differences were found among prosthesis from different manufacturers. The diagnosis that prompted to arthroplasty was: osteoarthritis in 60.9% of cases and fractures, bone necrosis, sequelae of fracture and rotator cuff tear arthropathy for the rest of implants. DISCUSSION AND CONCLUSION: This study describes the epidemiological data and mid-term implant outcomes of the shoulder arthroplasty procedures performed in our region, from 2008 to 2014, and compares them with published data from national registries of similar size. LEVEL OF EVIDENCE: III.

Deltoid muscle activity in patients with reverse shoulder prosthesis at 2-year follow-up.

PURPOSE: The reverse shoulder prosthesis (RSP) was developed to relieve pain and improve functional outcomes in patients with glenohumeral arthritis and deficiency of the rotator cuff. Even if clinical and functional outcomes regarding the use of the RSP were reported by literature, data concerning progressive deltoid adaptation to this non-anatomic implant are still missing. The purpose of our study was to correlate clinical and functional outcomes with deltoid fibers activity and muscle fatigability in patients with reverse shoulder prosthesis at 2 years follow-up. METHODS: Twenty patients with reverse shoulder prosthesis due to symptomatic deficient or nonfunctional rotator cuff associated with osteoarthritis were referred by Cervesi Hospital Shoulder and Elbow Surgery Unit. Exclusion criteria were: axillary nerve palsy, a nonfunctioning deltoid muscle, diabetes, previous trauma, malignancy. Furthermore patients who received the RSP for revision arthroplasty, proximal humerus fractures were excluded. All the patients underwent clinical and functional evaluation with the support of electromyography measurement focused on deltoid activity. RESULTS: RSP surgical treatment in shoulder osteoarthritis confirms his good outcome in terms of pain relief. At 2 years anterior and lateral deltoid electromyographic activity was significantly lower compared with contralateral side (p < 0.001). Posterior deltoid activity was no detectable. Range of motion at 2 years of follow-up decreased in terms of forward flexion (p = 0.045), abduction (p = 0.03) and external rotation (p < 0.001). CONCLUSIONS: Our study demonstrates that even if the patients remain pain-free, progressive deterioration of the deltoid activity is unavoidable and may lead to poor functional outcomes overtime.

Orthopedic resident's learning curve for arthroscopic subscapularis tendon repair: short-term clinical and radiographic outcomes.

BACKGROUND: Arthroscopic subscapularis (SSC) repair is a technically demanding procedure with a long learning curve. As effective completion of resident's practical experience remains controversial, a prospective clinical study was performed to assess the functional and anatomical outcomes of subscapularis (SSC) arthroscopic repair by orthopedic residents. The pathological anatomy of the tears, the surgical approach and the difficulties encountered at the beginning of the learning curve were reported. MATERIALS AND METHODS: Between June 2009 and June 2010, 30 patients with rotator cuff tear were preoperatively evaluated with clinical exam, Constant and UCLA scores. Surgery was performed under arthroscopy by a team of three orthopedic surgeons in training. A SSC tear, if present, was recorded and treated. The same clinical exam and functional scores were repeated at minimum 6 months of follow-up. Subscapularis strength recovery and tendon healing were investigated with arthromagnetic resonance imaging. RESULTS: A SSC tear was observed in 11 cases out of 30 and treated arthroscopically. The clinical scores improved in all patients: the average Constant score increased from 34 ± 14 to 77 ± 11 and the UCLA score from 11 ± 5 to 29 ± 3. The SSC tests were negative in all patients with the exception of one. Tendon healing was observed in 10 out of 11 cases. CONCLUSIONS: Arthroscopic SSC repair performed by educated residents is possible and leads to good clinical and anatomical results. Surgery duration progressively improved as the learning curve advanced. LEVEL OF EVIDENCE: Level 2.

Glenohumeral and scapulohumeral kinematic analysis of patients with traumatic anterior instability wearing a shoulder brace: a prospective laboratory study.

PURPOSE: To assess the effectiveness of a novel glenohumeral joint immobilizer, the S2 Shoulder Stabilizer®, by evaluating shoulder kinematics with a stereophotogrammetry system. METHODS: Participants in this prospective laboratory study were recruited from patients with anterior traumatic instability awaiting arthroscopic glenohumeral stabilization. Glenohumeral and scapulohumeral kinematic data (arm abduction-adduction and internal-external rotation, and scapular pronation-retraction and mediolateral rotation) were collected twice, without and with the brace, using a VICON™ motion capture system, and processed with MATLAB® software. RESULTS: The tests showed a significantly lower joint angle during abduction-adduction (p = 0.0022) and external rotation (p = 0.0076) and a significantly lower (p = 0.0022) mediolateral scapular rotation angle in the limbs wearing the immobilizer. Humeral head translation during abduction-adduction and internal-external rotation was also lower in the patients wearing the brace. CONCLUSIONS: The immobilizer significantly limited joint excursion in all planes of movement except internal rotation. The narrower humeral head translation with respect to the trunk, measured in the tests with the brace, demonstrates that the immobilizer achieves the goal of preserving joint stability in the movements that are at risk of dislocation.

The Porcellini test: a novel test for accurate diagnosis of posterior labral tears of the shoulder: comparative analysis with the established tests.

QUESTIONS/PURPOSES: Although the posterior labral tears of the shoulder are known for their disabling clinical course, especially in overhead athletes, no clinical test used in isolation can diagnose it accurately in the preoperative period. We wanted to: (1) introduce "Porcellini test" with its radiological verification furnishing the anatomical basis of its mechanism; (2) determine its accuracy; and (3) compare its accuracy with that of the other established tests for diagnosing posterior labral tears of the shoulder. METHODS: To determine the anatomical basis, we initially performed radiological verification of our test. Then, we evaluated its accuracy in a retrospective case-controlled study on 310 consecutive patients who underwent shoulder arthroscopic procedures at our hospital between January 2013 and December 2013. All patients were examined preoperatively for Porcellini test, and the presence of posterior labral tear was confirmed on arthroscopy. Later, in a cohort study on 91 consecutive patients who underwent shoulder arthroscopic procedures, we compared its accuracy with O'Brien's test, the Kim test, the Jerk test, and the Load and Shift test. The accuracy was interpreted in terms of sensitivity, specificity, and predictive values. RESULTS: The radiological verification conferred the anatomical basis for the mechanism of the Porcellini test. This new test showed high accuracy for posterior labral tears with sensitivity of 100 %, specificity of 99.3 %, the positive and negative predictive values of 92.6 and 100 %, respectively. Also, it had superior accuracy results than every other test. The interexaminer reliability for all test results was found to be >0.80. CONCLUSIONS: We propose "Porcellini test" as a simple, accurate, reproducible, and reliable test for the preoperative diagnosis of posterior labral tears of shoulder.

Total shoulder arthroplasty with a second-generation tantalum trabecular metal-backed glenoid component: Clinical and radiographic outcomes at a mean follow-up of 38 months.

AIMS: We evaluated clinical and radiographic outcomes of total shoulder arthroplasty (TSA) using the second-generation Trabecular Metal (TM) Glenoid component. The first generation component was withdrawn in 2005 after a series of failures were reported. Between 2009 and 2012, 40 consecutive patients with unilateral TSA using the second-generation component were enrolled in this clinical study. The mean age of the patients was 63.8 years (40 to 75) and the mean follow-up was 38 months (24 to 42). METHODS: Patients were evaluated using the Constant score (CS), the American Shoulder and Elbow Surgeons (ASES) score and routine radiographs. RESULTS: Significant differences were found between the pre- and post-operative CS (p = 0.003), ASES (p = 0.009) scores and CS subscores of pain (p < 0.001), strength (p < 0.001) and mobility items (p < 0.05). No glenoid or humeral components migrated. Posterior thinning of the keel and slight wear at the polyethylene-TM interface was observed in one patient but was asymptomatic. Radiolucent lines were found around three humeral (< 1.5 mm) and two glenoid components (< 1 mm) and all were asymptomatic. DISCUSSION: TSA with the second-generation TM Glenoid component results in satisfactory to excellent clinical performance, function, and subjective satisfaction at a mean follow-up of about three years. Radiographic changes were few and did not affect the outcome. TAKE HOME MESSAGE: This paper highlights that the second generation Trabecular Metal Glenoid has better outcomes than those reported with the first-generation component.

Arthroscopic joint debridement and capsular release in primary and post-traumatic elbow osteoarthritis: a retrospective blinded cohort study with minimum 24-month follow-up.

BACKGROUND: Elbow osteoarthritis (OA) is a degenerative condition which in the advanced stage can severely impair joint mobility. Conservative treatment remains the first choice; surgery should be considered in case of failure in patients prepared to adhere to a demanding rehabilitation protocol. We assess the effectiveness of arthroscopic joint debridement and capsular release in a series of patients with primary and post-traumatic elbow arthritis. MATERIALS AND METHODS: Forty-eight subjects (40 males, eight females; mean age 48 years) with a preoperative diagnosis of primary (19, 40 %) or post-traumatic OA (29, 60 %) were evaluated at a mean follow-up of 44 months. Outcome measures were active range of motion (ROM), pain score, Oxford elbow score (OES), and Mayo elbow performance score (MEPS). OA severity was graded into three classes (I-III) based on X-ray findings. Statistical significance was set at 5 %. RESULTS: At the final follow-up evaluation, active flexion/extension increased significantly (p < 0.01); pronation and supination improved, but the difference was not significant (p > 0.05). The pain score improved from 7.2 to 4.3 (p < 0.01). Both OES and MEPS improved significantly (p < 0.001). Patients with post-traumatic OA had better ROM (p = 0.0391) and clinical scores (OES, p = 0.011; MEPS, p = 0.010). ROM and clinical scores were lower but not significantly so in class II than in class I patients. A smooth coronoid and olecranon fossa was found in 38 (79 %) patients and a preserved ulnotrochlear joint space in 40 (80 %). CONCLUSIONS: Elbow OA has become more common as a result of earlier diagnosis and an increased number of acute injuries involving the joint. Arthroscopy is an effective technique to treat OA which provides the best results with the correct indications. Prospective studies are needed to help develop guidelines enabling selection of the best treatment option.

Strength recovery after arthroscopic anterosuperior cuff repair: analysis of a consecutive series.

PURPOSE: The purpose of this study was to look at the functional outcomes of arthroscopic repair of anterosuperior rotator cuff tears. METHODS: Sixty-one patients who underwent arthroscopic repair of anterosuperior cuff tears were retrospectively reviewed. At a minimum 6 months of follow-up, shoulder functional outcome scores including the Constant score (CS), simple shoulder test (SST) and visual analogic scale (VAS) were collected. Strength recovery for supraspinatus and subscapularis was investigated. RESULTS: All patients (mean age 59 ± 7) were available at a mean follow-up of 18 ± 7 months. The average CS improved from 30.8 ± 10.2 preoperatively to 76.5 ± 12.0 postoperatively, average SST from 2.6 ± 2.0 to 8.8 ± 2.9 and average VAS pain scale from 3.8 ± 1 to 0.5 ± 0.5 (p < 0.0001). Strength at belly-press and Jobe tests significantly improved (p < 0.0001). All patients with the exception of one were satisfied with the intervention. CONCLUSIONS: Arthroscopic repair of anterosuperior rotator cuff tears provides a significant improvement in pain relief and shoulder function. Strength recovery is demonstrated in medium correlation with tendon healing.

Co-analgesic therapy for arthroscopic supraspinatus tendon repair pain using a dietary supplement containing Boswellia serrata and Curcuma longa: a prospective randomized placebo-controlled study.

BACKGROUND: The cuff tendon that is most prone to full-thickness rotator cuff tears is the supraspinatus (SSP). Arthroscopic SSP repair ensures good to satisfactory mid- to long-term clinical outcomes. However, the intense postoperative pain reduces rehabilitation compliance and is cause of patient dissatisfaction. Many natural compounds act by inhibiting inflammatory pathways in a similar way to anti-inflammatory drugs MATERIALS AND METHODS: This was a prospective randomized trial designed to assess the analgesic effect of a dietary supplement (DS) containing Boswellia serrata and Curcuma longa in a population of subjects with full-thickness SSP tendon tear treated by arthroscopy. Three weeks before surgery, patients were randomized to receive Tendisulfur(®) (group T) or a placebo (group P) for 2 months. The primary outcome measure was subjective VAS pain. Secondary outcomes measures were Constant-Murley score simple shoulder test, and patient global assessment (PGA) scores. Patients were assessed immediately at baseline and subsequently at 1, 2, 4, 6, 8, 12, and 24 weeks. RESULTS: Stratification of pain scores and subscores demonstrated significantly lower overall pain scores in group T versus group P at 1 week (p = 0.0477), and lower but not significantly different scores on week 2 (p = 0.0988); at subsequent time points, differences were not significant (p > 0.05). PGA scores were good in all subjects. CONCLUSIONS: In conclusion, this study provides objective data on the effect of a DS containing natural substances, added to standard analgesics, on postoperative RC pain. DS alleviated short and partially mid-term pain, while long-term pain was unchanged. This limitation can probably be addressed by a dosage increase over the first 4 weeks and by extending treatment by 1 or 2 months.

Scapulothoracic arthroscopy for symptomatic snapping scapula: a prospective cohort study with two-year mean follow-up.

BACKGROUND: Snapping scapula is characterized by crepitus between the scapula and the chest wall due to abnormal tissue at this site. Surgical treatment, when needed, may be either open or arthroscopic. The aim of this study was to evaluate prospectively the clinical outcomes of arthroscopic decompression in ten subjects with symptomatic snapping scapula. PATIENTS AND METHODS: Ten subjects, five men and five women, mean age 24 years, were treated by arthroscopy after unsuccessful conservative management for 6 months. Clinical outcomes were evaluated with the Western Ontario Rotator Cuff (WORC) index, Constant-Murley score (CS), and simple shoulder test (SST). Follow-up was at 3 and 6 months; the final evaluation was conducted at a mean interval of 24 months. The final and preoperative X-rays were compared. RESULTS: The WORC index increased significantly at 3 (p < 0.05), 6 (p < 0.01), and 24 months (p < 0.01). Similar outcomes were found for the CS at all 3 follow-up points (3 months, p < 0.05; 6 months, p < 0.01; 24 months, p < 0.01). Mean "yes" responses on the SST were 9.8 ± 1.4 at 3 months (p < 0.05), 10.2 ± 1.2 at 6 months (p < 0.01), and 10.6 ± 1.2 at 24 months (p < 0.01). X-ray examination depicted flattening of the anterior surface of the superior-medial angle of the scapula in the five patients who had had bone resection, whereas no significant difference with preoperative imaging was detected in the five patients who were managed by bursectomy and debridement alone. CONCLUSIONS: Arthroscopy is a feasible and minimally invasive treatment for painful snapping scapula syndrome. Comparative clinical trials are needed to collect conclusive data to state that it is the most suitable treatment for this condition.

Elbow ulnar collateral ligament reconstruction: clinical, radiographic, and ultrasound outcomes at a mean 3-year follow-up.

BACKGROUND: Ulnar collateral ligament (UCL) has the main function to be stress-resistant to elbow valgus overload. Multilayer tears require a reconstruction with a tendon graft. In this study, we report the clinical, radiographic, and ultrasound outcomes after tendon graft reconstruction for symptomatic UCL insufficiency. MATERIALS AND METHODS: Among twenty-six subjects underwent elbow UCL reconstruction from 2006 to 2012, fifteen were available to be evaluated at a mean follow-up of 36 months. Preoperative assessment included clinical examination and MRI. The outcome measures were the Mayo Elbow Performance Score (MEPS); the Oxford Elbow Score (OES); the Disabilities of the Arm, Shoulder, and Hand (DASH); and the Conway-Jobe Scale. Overall population was postoperatively investigated with X-ray and ultrasound (US). Reconstruction was performed with autograft (palmaris longus) in five cases and allograft (semitendinosus) in ten cases using the figure-of-eight configuration (five cases), the docking technique (eight cases), or a fixation with screws (two cases). RESULTS: We found a significant improvement in postoperative MEPS, OES, and DASH scores (p < 0.01). One case was unsatisfied and required an additional procedure of ulnar nerve transposition 12 months after the reconstruction. X-ray showed calcifications along the graft in ten cases. At US examination, all the grafts assessed appeared anatomically intact without structural changes, and the dynamic examination showed a slight medial laxity with the valgus stress maneuver without pain or other sign of medial instability. CONCLUSIONS: This study confirms the efficacy of the graft reconstruction for chronic UCL insufficiency and introduces fresh insight on the role of musculoskeletal ultrasound to evaluate the reconstructed UCL.

Efficacy, usability and tolerability of a dynamic elbow orthosis after collateral ligament reconstruction: a prospective randomized study.

PURPOSE: To assess the efficacy, usability and tolerability of a dynamic orthosis compared with a standard plaster splint after the reconstruction of elbow medial or lateral collateral ligaments (MCL, LCL). METHODS: Twenty-six subjects undergoing MCL (n = 23) or LCL (n = 3) reconstruction were randomly assigned to immobilization with an orthosis (n = 13; group A "Innovator X") or with a plaster splint (n = 13; group B "Plaster splint"). Outcome measures were visual analogue scale pain score, mid-arm (MA) circumference, grip strength, Oxford elbow score (OES) and range of motion (ROM). Patients were assessed at baseline and at 2, 6, 12 and 24 weeks. RESULTS: Significant pain reduction was reported by all patients at 6, 12 and 24 weeks (p < 0.05). Mean MA circumference was significantly higher in group A at all time points (all p < 0.05). Mean grip strength was greater in group A on weeks 2 and 6 (p < 0.05), whereas the difference found on weeks 12 and 24 was not significant. The OES and passive ROM values of the two groups were not significantly different at any time point. CONCLUSIONS: The dynamic orthosis and the plaster splint both provided effective and safe elbow immobilization after MCL or LCL reconstruction. The orthosis provided greater pain reduction, faster recovery of muscle trophism and grip strength, and was better tolerated.

Shoulder arthroplasty in osteoarthritis: current concepts in biomechanics and surgical technique.

Shoulder arthroplasty is a technically demanding procedure to restore shoulder function in patients with severe osteoarthritis of the glenohumeral joint. The modern prosthetic system exploit the benefits of modularity and the availibility of additional sizes of the prosthetic components. In this paper we describe the biomechanics of shoulder arthroplasty and the technique for shoulder replacement including total shoulder arthroplasty (TSA) with all-polyethylene and metal-backed glenoid component, humeral head resurfacing and stemless humeral replacement.

Clinical and radiographic mid-term outcomes after shoulder resurfacing in patients aged 50 years old or younger.

PURPOSE: Humeral resurfacing is a treatment option to conventional shoulder arthroplasty, conferring the advantages to preserve the bone stock and the normal joint geometry. Aim of the current study was to report clinical and radiographic mid-term outcomes in a population of 60 patients, aged 50 years or younger, who underwent shoulder resurfacing in osteoarthritis. METHODS: The mean age was 48 ± 8.4, 36 were male and 24 female, dominant arm in 43 cases. Glenoid arthritis was treated in 36 cases (60 %) using a meniscus allograft in 22 cases, biologic patch in 4 cases and microfractures in 10 cases. Clinical and radiographic assessment was performed with Constant-Murley score and standard X-ray. RESULTS: At an average follow-up of 44 months, the mean values of the constant score increased of 30 points (p < 0.05), the pain decreased of 4.56 points (p < 0.05) and the Simple Shoulder Test increased of 4.3 points (p < 0.05). We found lower scores (p > 0.05) in 9 patients (15 %) treated for glenoid arthritis using homologous meniscus (7 cases) and biologic patch (2 cases). A significant narrowing of joint space (5.92 mm postoperative versus 1.65 mm at 37 months) (p < 0.05) was found in the 22 cases treated with meniscus interposition. In 4 cases with type A2 preoperative glenoid morphology and in 9 cases type B1, we registered significantly lower scores compared with the overall study population (p < 0.01). Five unsatisfied patients (7 %), underwent to meniscus removal and glenoid reaming in 3 cases and conversion in total shoulder arthroplasty in 2 cases. CONCLUSIONS: Resurfacing arthroplasty is an effective device in young patients with advanced glenohumeral arthropathy; however, the high rate of postoperative glenoid erosion and the failure of biologic allograft lead us to consider glenoid replacement as the best option to improve clinical outcomes.

Ultrasound-guided subacromial injections of sodium hyaluronate for the management of rotator cuff tendinopathy: a prospective comparative study with rehabilitation therapy.

BACKGROUND: Rotator cuff (RC) tendinopathy is a common cause of pain and shoulder dysfunction. The literature evidence suggests that a combination of overuse and extrinsic compression may induce chronic RC tendinopathy. Aim of the current study was to compare the results of subacromial sodium hyaluronate injections with rehabilitation therapy. MATERIALS AND METHODS: We enrolled 48 patients (M/F: 26/22; mean age: 50 years; shoulder right/left: 29/19) with persistent shoulder pain for at least 4 months. Exclusion criteria were as follows: RC tear, calcifying tendinitis, glenohumeral instability, osteoarthritis, rheumatic diseases, physical therapy and/or injection in the previous 4 months, shoulder surgery, anesthetic nerve block, trauma, and severe medical diseases. The included subjects received either two ultrasound-guided subacromial hyaluronic acid (HA) injections (25 patients, HA group) at baseline and 14 days, or underwent rehabilitation therapy (23 patients, Physio group) including active shoulder mobilization, soft tissue stretching and humeral head positioner and propeller muscles strengthening for 30 days (3 sessions every week). Clinical assessment of shoulder function was performed with visual analog scale score for pain (0-100), Oxford Shoulder Score (OSS), and Constant-Murley Score (CS). Overall, patients were examined at baseline, week 2, week 4, week 12, and week 24. Statistical significance was set at 5 % (p < 0.05). RESULTS: Reduction in overall pain in the HA group was statistically significant at week 2 (p < 0.05) week 4 (p < 0.05), week 12 comparing to baseline. Similarly, pain subscores (at night and with activity) were significantly lower at week 2 (p < 0.05), week 4 (p < 0.05), and week 12 (p < 0.05), respectively. In the Physio group, pain decreased significantly at week 2 (p < 0.05) but not maintained at week 4 (p > 0.05), week 12 (p > 0.05), and week 24 (p > 0.05). CS and OSS in the HA group increased significantly at week 2 (p < 0.05), week 4 (p < 0.05), and week 12 (p < 0.05). A non-statistically significant increase in clinical scores was found at week 24 (p > 0.05). A significant improvement of CS and OSS we found in the Physio group at week 2 (p < 0.05), but not at weeks 4, 12, and 24 (p > 0.05). CONCLUSIONS: Subacromial HA injections could be an effective and safe alternative treatment for patients suffering from RC tendinopathy. We believe that the results of this study are encouraging but not lasting and we might suppose that a series of three to four subacromial sodium hyaluronate injections could provide good mid- and long-term clinical benefits.