Humeral head resurfacing in central bone defects: in vitro stability of different implants with increasing defect size.


We examined the rotary motions of two distinct cementless surface replacement arthroplasties of the shoulder that were implanted on humeri with central spherical bone defects of 8%, 17%, and 37% of the head volume (n = 5 each). Rotary motions were measured under a cyclic torque application and translated into relative micromotions. Implant A with a… (More)
DOI: 10.1002/jor.22074


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