Archive image from page 632 of The cyclopædia of anatomy and. The cyclopædia of anatomy and physiology cyclopdiaofana0401todd Year: 1847 Dislocation forwards and downwards. (Original, from the museum of the College of Surgeons, Dublin.) the edge of the glenoid cavity, to about one- third across the subscapular fossa; a deep cup was formed for the reception of the dislocated head of the htimerus; the inner margin of this cup was fully half an inch above the level of the subscapular fossa; the glenoid cavity had lost all cartilaginous investment ; it was rough on its surface from bony depositio
Archive image from page 632 of The cyclopædia of anatomy and. The cyclopædia of anatomy and physiology cyclopdiaofana0401todd Year: 1847 Dislocation forwards and downwards. (Original, from the museum of the College of Surgeons, Dublin.) the edge of the glenoid cavity, to about one- third across the subscapular fossa; a deep cup was formed for the reception of the dislocated head of the htimerus; the inner margin of this cup was fully half an inch above the level of the subscapular fossa; the glenoid cavity had lost all cartilaginous investment ; it was rough on its surface from bony deposition, and its inner margin was elevated somewhat into a sharp ridge, so as to form part of the margin of the new articular cavity for the head of the humerus. 3. Dislocation backwards of the fiend of the fiuments on the dor sum of (he scapula, ike result of accident. — In this dislocation the arm Is Fig. 439. Dislocation on the dorsum of the scapula. directed from above downwards, inwards, and forwards. The deformity of the joint is well seen by viewing it in front, where a deficiency is noted of the normal roundness of the articu- lation. When we look at the shoulder side- ways, the head of the humerus maybe seen to form a remarkable saliency behind the posterior angle of the acromion. In this dislocation the head of the bone is thrown on the posterior surface of the scapula immediately below the spine of this bone, and there forms a very re- markable protuberance, and when the elbow is rotated as far as practicable this protuberance moves also. The dislocated head of the bone may be easily grasped between the fingers, and distinctly felt resting below the spine of the scapula; the motions of the arm are impaired, but not to the same extent as in the other luxations of the shoulder, and the longitudinal axis of the humerus may be observed to run upwards, backwards, and to a point, evidently behind the situation of the glenoid cavity. In Guy's Hospital Reports Sir A. Coope
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