When one finds described in the literature many operations for the correction of a mechanical fault it is a fair assumption that none of them are entirely satisfactory in establishing permanent cure. Certainly recurrent dislocation of the shoulder is not an infrequent condition, but its cause has certainly never been established satisfactorily.
Analyzing the condition from the anatomic standpoint, it seems to us that the glenoid has little or no function in maintaining the head of the humerus in position. It is almost flat and should be smooth; if it is not smooth, the patient's use of the shoulder is so hampered that recurrent dislocation could not take place. The capsule of the joint is a weak and loose bag which is attached well above and well below the actual articular surface and has little part in holding the. head of the humerus in contact with the surface of the
MAGNUSON PB, STACK JK. RECURRENT DISLOCATION OF THE SHOULDER. JAMA. 1943;123(14):889–892. doi:10.1001/jama.1943.02840490017006
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