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PubMed1988

Evaluation of a nonconstrained total shoulder prosthesis.

We reviewed the radiographs and medical records of 76 patients with 98 nonconstrained total shoulder prostheses: 68 were inserted for rheumatoid arthritis, 25 for osteoarthritis, and five for avascular necrosis. The radiographic follow-up averaged 36 months. Radiographic evidence of postoperative complications was noted in 37 (38%) of 98 shoulders: dislocation of the humeral head (six), upward migration of the humerus (24), loosening of the glenoid compartment (15), loosening of the humeral component (five), subsidence of the humeral component (seven), and heterotopic bone formation (six). Patients with a dislocated prosthesis had limitation of motion, poor function, and residual pain. No increase in pain was associated with proximal subluxation of the humerus. No correlations were found between any of the radiographic findings (the presence of radiolucent lines about the glenoid or humeral components, humeral subsidence, or ectopic ossification) and any of the clinical findings (pain relief, range of motion, motor power, or functional improvement).

Arthritis, Rheumatoid↗
PubMed1994

Isolated partial tear of subscapularis muscle in a competitive water skier. A case report.

Partial tears of the subscapularis tendon associated with anterior shoulder dislocation, are frequently described while the isolated lesions of this tendon are quite rare. We report the case of a 33 years old water-skier who injured his right subscapularis muscle during a forced movement of adduction and internal rotation. Ultrasound evaluation and then MRI were used to depict the entity of the lesion. The ruptured tendon was surgically repaired using a MITEK anchor system. Four months after surgery, the athlete returned back to his full athletic activity.

Adult↗
PubMedDate not supplied

Magnetic resonance arthrography in recurrent anterior shoulder instability as compared to arthroscopy: a prospective comparative study.

AIM: To evaluate the accuracy of magnetic resonance (MR) arthrographic imaging in the diagnosis of glenoid labral and ligament tears in recurrent shoulder instability. SETTINGS AND DESIGN: Prospective, comparative study at a tertiary care centre. MATERIAL AND METHODS: Patients with three or more episodes of anterior shoulder dislocation were enrolled in the study. They were subjected to magnetic resonance arthrography (MRA) for delineation of abnormalities. The findings obtained at MRA were compared with those found at arthroscopy and surgical exploration. RESULTS: MRA detected glenoid tears in all 22 patients with 20 (90%) patients having antero-inferior tears, 3 (14%) patients had superior labral involvement and 2 (10%) patients had posterior labral abnormality. On arthroscopy, antero-inferior, superior and posterior labral tear were found in 21 (95%), 5 (22%) and 7 (32%) patients respectively. MRA showed a sensitivity of 95%, and a specificity of 100% for the detection of the antero-inferior labral tears. The sensitivity of MRA for the detection of superior, middle and inferior glenohumeral ligament tear was 83%, 80% and 86% with a specificity of 100%, 71% and 93% respectively. MRA was 100% sensitive for the detection of rotator cuff injuries and detection of bony lesions like Hill-Sach's and bony Bankart's lesion. CONCLUSIONS: MRA is a sensitive and specific modality for evaluation of anterior shoulder instability.

Adolescent↗
PubMed1990

Anterior staple capsulorrhaphy for recurrent dislocation of the shoulder: a clinical and biomechanical study.

Thirty-three anterior staple capsulorrhaphies of the shoulder were reviewed at an average 49.7 months postoperatively (range 12 to 127 months); one postoperative dislocation occurred. The patients' quality of athletic participation improved with surgical therapy in 50%, remained the same in 38%, and was lowered in 12%. Average loss of external rotation was 11.4 degrees with the arm adducted and 13.9 degrees with the arm abducted 90 degrees. A positive apprehension sign persisted in 50%. Shoulder function was good or excellent in 84%. Mild pain was admitted by 55%, moderate pain by 6%, and severe pain by 3%. Staple malpositioning or loosening was identified in 12 shoulders; six of these patients had attributable clinical problems. Biomechanical studies in porcine bone were used to demonstrate that predrilling facilitates proper staple positioning without compromising staple fixation strength and, in a synthetic trabecular model, that a 5 degrees variance in the alignment of the staple holder during staple insertion weakens the fixation strength by 51% (P less than .001). The operation usually prevents recurrent dislocation, permits recovery of normal (or near normal) shoulder motion, and allows satisfactory return to competitive athletics. If staple malpositioning and loosening occur, they may cause clinical problems, including degenerative arthritis. Though most patients (92%) stated they would again have the operation, when practical, we recommend other methods of repair of capsule and labral detachment.

Adult↗
PubMed1993

Arthroscopic versus open Bankart procedures: a comparison of early morbidity and complications.

Morgan recently reported excellent results by arthroscopically suturing detached labra to the glenoid via drill holes in anterior shoulder dislocators. We attempted to quantitatively compare the operative time, and perioperative morbidity employing this technique to these same parameters using the open Bankart procedure. We retrospectively reviewed the records of consecutive patients undergoing either of these procedures at our institution over the past 2 years. Only those cases wherein the labra were reattached to the glenoid via drill holes were considered. There were 20 patients in the arthroscopic and 18 in the open Bankart groups. Using the arthroscopic method, there was a 1.8-fold decrease in operative time, a 10-fold decrease in blood loss, and a 2.5-fold decrease in postoperative narcotic use compared with the open procedure (p < 0.001). Postoperative fevers were similarly reduced. Hospital stay averaged 3.1 days with the open procedure compared with 1.1 days with the arthroscopic method (p < 0.001). Most arthroscopic Bankarts are now performed on a same-day basis. Time lost from work was 25.5 and 15.3 days for the open and arthroscopic procedures, respectively (p < 0.001). There were three complications among the patients treated with the open technique compared with none in the arthroscopic group. Thus, we conclude that the arthroscopic Bankart procedure offers significant improvements in operative time, perioperative morbidity, and complications compared with the open technique for patients with anterior shoulder instability.

Arthroscopy↗
PubMed1994

Theo van Rens Prize. Arthroscopic assessment of the unstable shoulder.

The purpose of this study was to evaluate prospectively the findings during shoulder arthroscopy in patients with recurrent anterior instability of the glenohumeral joint. One hundred and seventy-eight patients who fulfilled the criteria of having had at least one documented shoulder dislocation were included in the study. The pathological findings most frequently noted at arthroscopy were: anterior glenoid labral tears (85%), ventral capsule insufficiency (80%), Hill-Sachs compression fractures (67%), glenohumeral ligament insufficiency (55%), rotator cuff tears (20%), posterior glenoid labral tears (8%), and SLAP lesions (5%). Abnormalities were noted more frequently than expected, and there were significant differences between preoperative and postoperative diagnoses. Our study has taught us that a multiplicity of morphological changes are associated with instability of the glenohumeral joint, and that there is no single cause. The labrum and rim of the anterior inferior glenoid, for instance, showed typical abnormalities corresponding to different entities of anterior instability. In practice, this is very important, as the abnormalities visualized by imaging methods determine the surgical treatment.

Adult↗
PubMed2000

The Boytchev procedure for recurrent anterior dislocation of the shoulder. A controversial technique.

In the Boytchev technique the conjoined tendons of the coracobrachialis and short head of the biceps, together with the tendon of the pectoralis minor and the detached tip of the coracoid process are rerouted behind the subscapularis muscle, and reattached to the coracoid process with a screw. During a 10-year period 37 patients with recurrent anterior dislocation underwent a Boytchev procedure. Twenty-six patients (with 27 shoulders) were available to follow-up. The results of this retrospective study were disappointing, as the overall redislocation rate was 44%. The opinions of other authors were found to be extremely divergent.

Adolescent↗
PubMed2006

Arthroscopic treatment of chronic anterior instability of the shoulder in Marfan's syndrome.

We present a case of recurrent anterior shoulder dislocation in a patient with Marfan's syndrome who presented with hyperlaxity that has been treated arthroscopically. We discuss abnormal findings at arthroscopic evaluation, including complete absence of the mid anterior capsule, which left the subscapularis uncovered, and we hypothesize that repetitive trauma to the capsule was not followed by a normal process of remodeling because of a lack of competent elastic fibers and a poor capacity for soft tissue healing. The inferior insertion of the labrum and the inferior glenohumeral ligament seemed normal through the large volume of the pouch. We performed arthroscopic reconstruction of the capsule through dissection of its anteroinferior part with a radiofrequency wand from the glenoid rim and the subscapularis, followed by superior drift of the capsule. The Weitbrecht foramen was then closed with 2 nonresorbable No. 4 sutures, and the capsule was reinserted to the labrum with 2 anchors. A final suture closed the remaining hole in the rotator interval. At 16-month follow-up, the patient emphasized her satisfaction with the results; she was able to keep up with her regular schedule of leisure sports and swimming, painlessly, with no limitations or new episodes of instability.

Adult↗
PubMed1983

Dislocation arthropathy of the shoulder.

Seventy-four shoulders in seventy patients with a history of single or multiple dislocations of the shoulder demonstrated radiographic evidence of glenohumeral arthropathy. In every patient radiographs of the contralateral shoulder failed to reveal any abnormality (except, of course, in patients with bilateral dislocation). There were sixty-two anterior and eleven posterior dislocations, and one multidirectional dislocation. Shoulders with a posterior dislocation had a much higher incidence of moderate and severe arthrosis than those that had an anterior dislocation. This seemed to be related to delay in diagnosis. The number of recurrent dislocations or the presence of defects of either the glenoid rim or the humeral head, or both, was not related to the severity of the arthrosis. Operations in which internal fixation devices intruded on joint cartilage frequently resulted in moderate to severe arthrosis. Ten of the fifteen shoulders with severe arthrosis and six of the fourteen with moderate arthrosis had had no operation for the dislocation. Six of these sixteen shoulders had had a posterior dislocation for which reduction had been delayed.

Adolescent↗
PubMed1977

Status of total shoulder arthroplasty.

Some patients with degenerative, rheumatoid, and traumatic diseases of the glenohumeral joint require treatment primarily to relieve pain. In the absence of complete knowledge of basic mechanical requirements, clinical trials with both constrained and resurfacing prosthesis were initiated. Three types of constrained prostheses were placed in 23 patients. Pain relief was satisfactory, but six reoperations were necessary and motion greater than 90 degrees was rarely achieved. Twenty-five prostheses that were used to replace the glenohumeral articulation, but were not stable by virtue of design, were implanted. Again, pain relief was excellent; mechanical problems were not present, and motion was almost always greater than 90 degrees. Achieving stability by capsular-muscle cuff repair has not been as great a problem as anticipated. These results suggest that more emphasis should be placed on repair of the glenohumeral stabilizing structures than on their replacement.

Adult↗
PubMed2005

Supportive devices for preventing and treating subluxation of the shoulder after stroke.

BACKGROUND: Supportive devices such as slings, wheelchair attachments and orthoses have been used to treat subluxation of the shoulder after stroke. OBJECTIVES: To investigate the effect of supportive devices in preventing subluxation, re-positioning the head of humerus in the glenoid fossa, decreasing pain, increasing function and adversely increasing contracture in the shoulder after stroke. SEARCH STRATEGY: We searched the Cochrane Stroke Group Trials Register (last searched on 22 March 2004). In addition, we searched the Cochrane Central Register of Controlled Trials (CENTRAL) (The Cochrane Library, Issue 1, 2004), MEDLINE (1966 to March 2004), CINAHL (1982 to March 2004), EMBASE (1974 to March 2004), AMED (1985 to March 2004) and the Physiotherapy Evidence Database (PEDro, March 2004). We also handsearched conference proceedings and contacted authors for additional information. SELECTION CRITERIA: Studies were included if they were: randomised, quasi-randomised or controlled trials; participants had a stroke; intervention was supportive devices; and subluxation, pain, function or contracture were measured. DATA COLLECTION AND ANALYSIS: Two independent reviewers examined the identified studies which were assessed for methodological quality and analysed as (1) supportive devices versus no supportive devices or (2) two supportive devices. MAIN RESULTS: Four trials (one on slings, three on strapping - 142 participants) met the inclusion criteria. One trial testing a hemisling versus no device reported that no participants had subluxation greater than 10 mm, the same number had lost more than 30 degrees of shoulder external rotation (Peto odds ratio (OR) = 1.00, 95% confidence interval (CI) 0.1 to 9.3), and more participants in the hemisling group had pain (Peto OR = 8.7, 95% CI 1.1 to 67.1). The other three showed that strapping was effective in delaying the onset of pain (weighted mean difference (WMD) = 14 days, 95% CI 9.7 to 17.8), but was ineffective in reducing pain severity (WMD = -0.7 cm on a visual analogue scale, 95% CI -2.0 to 0.7), increasing upper limb function (WMD = 0.8, 95% CI -1.5 to 3.1) or affecting the degree of contracture (WMD = -1.4 degrees, 95% CI -10.9 to 8.1) at the shoulder. AUTHORS' CONCLUSIONS: There is insufficient evidence to conclude whether slings and wheelchair attachments prevent subluxation, decrease pain, increase function or adversely increase contracture in the shoulder after stroke. There is some evidence that strapping the shoulder delays the onset of pain but does not decrease it, nor does it increase function or adversely increase contracture.

Braces↗
PubMed2000

Bilateral painful hand-moving fingers: electrophysiological assessment of the central nervous system oscillator.

We describe a 35-year-old woman who presented with the syndrome of painful hand-moving fingers on the right side. Eight months later, she developed similar finger movements and hand discomfort on the left side. She had a history of hand trauma and recurrent shoulder dislocation on the right side. Kinesiologic electromyography suggested a common central oscillator for finger movements in both hands. Electrophysiological assessment of spinal alpha motor neuron excitability, reciprocal inhibition, and Renshaw cell inhibition failed to show any abnormalities. Somatosensory evoked potential test showed marked attenuation of N20 potential recorded from the left somatosensory cortex; paired transcortical magnetic stimulation of the left motor cortex suggested failure of cortical facilitation. The data suggest that the central oscillator responsible for finger movements is located above the spinal cord level in this patient.

Adult↗