Archive image from page 633 of The cyclopædia of anatomy and. The cyclopædia of anatomy and physiology cyclopdiaofana0401todd Year: 1847 612 ABNORMAL CONDITIONS OF THE SHOULDER JOINT. imperfect and irregular union. The muscles of the dorsum scapulas were diminished, by being thrown out of use, and the tendon of the long head of the biceps muscle was entire, but glued down by adhesion.' Upon further ex- amination of the scapula and os humeri, Sir A. Cooper found the muscles and the situation of the bones to be as follows: — 'The head of the os humeri was placed behind the glenoid cavity of the
Archive image from page 633 of The cyclopædia of anatomy and. The cyclopædia of anatomy and physiology cyclopdiaofana0401todd Year: 1847 612 ABNORMAL CONDITIONS OF THE SHOULDER JOINT. imperfect and irregular union. The muscles of the dorsum scapulas were diminished, by being thrown out of use, and the tendon of the long head of the biceps muscle was entire, but glued down by adhesion.' Upon further ex- amination of the scapula and os humeri, Sir A. Cooper found the muscles and the situation of the bones to be as follows: — 'The head of the os humeri was placed behind the glenoid cavity of the scapula, and rested upon the posterior edge of that articular surface, and upon the inferior costa of the scapula, where it joins the articulation. When the scapula was viewed anteriorly, the head of the os hu- meri was placed in a line behind the acromion but below it, and a wide space intervened be- tween the dislocated head of the bone and the coracoid process, in which the fingers sunk deeply towards the glenoid cavity of the sca- pula. When viewed posteriorly, the head of the os humeri was found to occupy the space between the inferior costa and spine of the scapula, which is usually covered by the infra- spinatus and teres minor muscles. The tendon of the subscapularis muscle, and the internal portion of the capsular ligament, had been torn at the insertion of that muscle; but the greater part of the posterior portion of the capsular ligament remained, and had been thrust back with the head of the bone, the back part of which it enveloped. The supra- spinatus muscle was put upon the stretch, the subscapularis was diminished by want of ac- tion, and the infra-spinatus, and teres minor muscles were shortened and relaxed, as the head of the bone carried their insertions back- wards. The tendon of the long head of the biceps muscle was carried back with the head of the bone, and elongated; but it was not torn. As to the changes in the bones, the head of the os humeri, an
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