Granulomatous synovialitis with erosions in the shoulder joint: a rare case of polyarthritis caused by Mycobacterium kansasii.
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Emergency in orthopaedics compared to classical surgery presents a completely different issue. Some orthopaedic conditions do not require immediate surgery, but they have to be solved within weeks or months, and are therefore addressed as relatively urgent conditions. If this kind of surgery is delayed, condition may deteriorate, and in some cases it becomes impossible to perform reconstructive surgical procedure. Considering this, some shoulder conditions require urgent and some relatively urgent surgery. When time limits are concerned that means these patients have to be operated on within 3 to 6 weeks, or during first three months after the initial trauma.
One hundred two computed tomographic (CT) arthrograms of the shoulder were retrospectively reviewed and compared with conventional double-contrast arthrograms from 101 patients (24 females and 77 males aged 9-70 years). One- to 4-year follow-up was obtained in 84 patients, 40 of whom underwent open-shoulder surgery or arthroscopy. Morphology of the normal portions of each labrum was categorized according to length, width, and tip shape. Correlation between morphology and age was weak, but abnormal labra were more common in younger patients. Conventional radiography was more accurate for detecting bony glenoid margin fractures, but CT was more accurate for detecting Hill-Sach fractures. CT was also more reliable than conventional arthrography in the detection of rotator cuff tears. Hence, few if any conventional radiographs are necessary between contrast material injection and CT imaging. A reduction in the number of images obtained will result in decreased radiation dose, less cost, and shorter examination time without loss of diagnostic accuracy.
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Women undergoing mastectomy for cancer were assigned at random to three groups, each with about 310 patients. In one group, radiotherapy was given before the operation, and in the second group, it was given after the operation. In the third group, no radiotherapy was given. About 160 patients from each group were examined for the degree of edema of the arm, mobility of the shoulder--represented by 5 indices--and gripping force. Except for gripping force, the findings were significantly better for the group not receiving radiotherapy than for the groups given irradiation. There was no statistically significant difference between the groups receiving radiotherapy before or after mastectomy. For all groups, there was significant edema of the arm and a decrease in the mobility of the shoulder compared with that of the control arm, except for the rotations in the group not receiving irradiation.
The possibility that functional impingement results from muscular imbalance has been discussed. This study investigates whether disturbance of muscular coordination is reflected in a shift in the balance of fast-twitch and slow-twitch fibers, as fast-twitch fibers enable a rapid reaction or contraction and slow-twitch fibers enable slow contractions and sustained performance. The supraspinatus and deltoid muscles in 37 patients with a supraspinatus syndrome and partial or complete rupture of the rotator cuff underwent biopsy. All three groups of patients showed a reduction in size, increased variability, and change in the frequency distribution of fiber cross sections. The fast-twitch fibers were especially affected. These findings were confirmed objectively by morphometric measurements. It might be concluded from the changes mentioned above that disturbance in coordination of the musculature can cause a functional impingement. We term this neuromuscular insufficiency of the rotator cuff. The mechanical factors relating to subacromial impingement may only have a role in promoting its manifestation by restricting the compensatory range of the joint.
In the evaluation of the impingement syndrome, conventional radiography can only show secondary bony changes. Sonography is able to demonstrate the anatomy of the musculotendinous structure of the rotator cuff. Lesions can be detected with the same accuracy and specificity as by contrast arthrography. As sonography is a non-invasive method, it should be used routinely to test rotator cuff integrity. Joint effusions and proliferative synovial changes are easily demonstrated by sonography. It is thus possible to perform follow-up studies in a pre-erosive stage of rheumatoid arthritis.
In a prospective study we evaluated diagnostic ultrasound investigation for shoulder instabilities. In 150 healthy persons we measured the passive ap-translation in relation to the dorsal glenoid as well as the inferior subluxation in relation to the acromion. After establishing normative data we measured 23 patients with unidirectional instabilities and 34 with multidirectional instabilities. The humeral head position of a normal joint is 8 to 10 mm dorsally to the glenoid. In the control group, the anterior translation of the dominant shoulder (Student-t test p = 0.0045) was significantly higher. Patients with anterior instabilities showed a significant increase of anterior translation in the injured shoulder (Student-T test; p = 0.0001). In comparison to the control group, there is a significant increase in downward subluxation in patients with multidirectional instabilities (chi2, alpha = 0.05). In habitual or voluntary dislocations, the relation of the humeral head to the glenoid can be judged statically and dynamically. Secondary signs of dislocation (Hill-Sachs lesions, joint effusion) are evident.
A classification of fractures of the shoulder is given and diagnostic procedures are discussed. In most of the cases functional therapy is the treatment of choice. There exist a few indications for reduction and operation. Fractures of the scapula are briefly reviewed. For fractures of the proximal humerus in children a conservative approach is indicated. Different forms of fractures require an individual treatment.
Seventeen hemiplegic patients with chronic shoulder subluxation secondary to a cerebrovascular accident (CVA) were divided into three groups, two of which were subjected to 6 weeks of therapeutic electrical stimulation (TES) for 15 minutes twice a day, in order to assess the effectiveness of the treatment in reducing subluxation, and in improving shoulder abduction function. The third group was used as a control (C group). After 6 weeks of electrical stimulation of the supraspinatus (S group) and deltoid (D group), a significant (p<0.05) reduction in subluxation was observed in both groups when compared to the C group. The maximal force of shoulder abduction showed a tendency to increase in the S group (p<0.10). A significant increase in maximal force was also observed in the D group. In most of the TES-treated muscles, the interference pattern of EMG at maximum voluntary contraction increased. The amplitude of the EMG activity of the stimulated muscle also increased. Thus, we concluded that electrical stimulation therapy of the supraspinatus and the deltoid muscle is an effective treatment modality for shoulder subluxation and shoulder abduction function in hemiplegic patients.
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The overall goal of the rehabilitation period is a return to full range of motion and a strengthening of the muscles that have a role in protecting the shoulder from injury. Rehabilitation is accomplished gradually and is performed initially in a limited range that excludes the terminal 30 degrees at either end. Two key muscle groups are to be strengthened. One group is for the glenohumeral joint: the deltoid, latissimus dorsi, pectoralis major, and the rotator cuff muscles--especially the subscapularis muscle for internal rotation and the infraspinatus and the teres minor muscles for external rotation. The second group, the trapezius, rhomboids, and serratus anterior muscles, is strengthened for scapular control. Finally, general conditioning and trunk flexibility exercises are critical for a return to former competitive levels.
Commercially available fixation devices used for reattachment of capsuloligamentous tissue to the glenoid rim were tested until they failed in 42 human cadaveric shoulders, and compared to the tension strength of the standard Bankart procedure and that of the intact anterior capsule. The bone quality in the glenoid was measured by quantitative computed tomography, which allowed selective quantification of cortical and cancellous quantification of cortical and cancellous bone. The mean load at failure perpendicular to the bone surface varied from 90 to 115 N and was lower than in the standard Bankart procedure (127 N). All suture anchors demonstrated similar holding strength with the exception of an absorbable wedge (P < 0.05). Due to reduced mineral content in the inferior part of the glenoid, the fixation strength of all suture anchors was significantly decreased. In more than 20% a tension load of 100 N caused the suture anchor to pull out, but in general the fixation strength was limited by the suture attachment and the quality of the soft tissues. These data together with the first clinical results of 49 cases of anterior instability operated on between 1988 and 1992 allow the conclusion to be made that this modification will provide sufficient stability for early mobilization after surgical repair.
Multivariate discriminant analysis allowed definition of cytokine, matrix metalloproteinases (MMP), and tissue inhibitors of metalloproteinases (TIMP) levels in synovial fluid (SF) of patients with rotator cuff tears and other shoulder lesions. We analyzed SF aspirated from the glenohumeral joints of 17 patients with rotator cuff tears; SF from nine patients with other shoulder lesions was used to characterize a non-rotator-cuff-tear (NRCT) group. Discriminant analysis demonstrated statistically significant differences in (1) the determination of whether rotator cuff tear patients are separable from the NRCT group using the influential functions, the most influential of which were interleukin 1-beta, MMP-2, and MMP-13, and (2) the assessment of whether full-thickness rotator cuff tears are distinguishable from partial tears using identical influential functions. The most influential function in the latter analysis was MMP-13. Both interleukin 1-beta and MMP-13 might be biochemical markers of impending rotator cuff tears.
In osteosynthesis of proximal humerus fractures, the screws frequently penetrate the joint. Using orthogonal frontal and lateral radiographs, we found unrecognized pin penetration in 8 of 30 patients during fixation of unstable neck fractures of the humerus.
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