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[Functional anatomy of the long head of biceps brachii--a comparative study between normal and torn rotator cuff shoulders in cadaver specimens].

In order to clarify the function of the tendinous portion of the long head of biceps brachii, intra-articular lesions of the glenoid labrum and the bicipital long head were investigated on 100 shoulder joints in 50 cadavers. From the point of anatomical features, the glenoid cavity is deepened and widened by the glenoid labrum, and the bicipital long head, which arises from the superior glenoid labrum, covers the humeral head anterosuperiorly and stabilizes the humeral head in the glenoid cavity. The pathological changes of the glenoid labrum with cuff tear (46 joints) included hypertrophy, fraying and erosion, while the bicipital long head was widened and flattened. These pathological changes progressed in company with the extension of the cuff tear. From these results, it is concluded that the intra-articular elements, such as the glenoid labrum and the bicipital long tendon play significant roles as glenohumeral stabilizers.

Adult↗

Shoulder pain in the overhand or throwing athlete. The relationship of anterior instability and rotator cuff impingement.

Shoulder pain in the overhand or throwing athlete can often be traced to the stabilizing mechanisms of the glenohumeral joint. During the physical examination, signs of impingement will often be obvious, whereas subluxation signs are subtle. Use of the Apprehension Test followed by the Relocation Test has proved to be the most sensitive means of detecting occult anterior glenohumeral subluxation. When subluxation is suspected, an examination under anesthesia and orthroscopy are the most helpful next step. Patients can be classified into one of four groups on the basis of the results of the examinations. If conservative rehabilitation fails, then surgery may be considered.

Adolescent↗

[Occupational supraspinatus tendinitis. The rotator cuff syndrome seen from a medical insurance point of view].

The medical insurance course concerning a woman aged 53 years is described. Throughout two years she had stacked more than 20 tons of cheese daily in units of 4.5 kg from a conveyer belt to shelves from ankle to shoulder height. During a period in which great quantities of cheese consisted of units of 18 kg which had to be stacked at over head height, she developed bilateral supraspinatus tendinitis. The patient was no longer able to work and she was subsequently awarded disability pension. The course of this case of occupational insurance is described and criticised.

Female↗