Analysis of a retrieved delta III total shoulder prosthesis.
A reversed Delta III total shoulder prosthesis was retrieved post-mortem, eight months after implantation. A significant notch was evident at the inferior pole of the scapular neck which extended beyond the inferior fixation screw. This bone loss was associated with a corresponding, erosive defect of the polyethylene cup. Histological examination revealed a chronic foreign-body reaction in the joint capsule. There were, however, no histological signs of loosening of the glenoid base plate and the stability of the prosthetic articulation was only slightly reduced by the eroded rim of the cup.
Nyffeler
R W
RW
University of Zurich, Zurich, Switzerland.
Werner
C M L
CM
Simmen
B R
BR
Gerber
C
C
D000368:Aged; D000369:Aged, 80 and over; D019643:Arthroplasty, Replacement / Q000009:adverse effects*; D005549:Foreign-Body Reaction / Q000209:etiology* / Q000473:pathology; D006801:Humans; D007592:Joint Diseases / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery*; D007595:Joint Prosthesis / Q000009:adverse effects*; D008297:Male; D011475:Prosthesis Failure; D011859:Radiography; D016059:Range of Motion, Articular; D012785:Shoulder Joint