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Analysis reveals how joint conformity affects translation patterns in shoulder arthroplasty, suggesting optimal designs.
There is considerable debate regarding the ideal conformity between the radius of curvature of the glenoid (RG) and humeral head (RH) components in total shoulder arthroplasty. Cadaver studies of normal glenohumeral translations during active (Kelkar et al., 1992) and passive (Harryman et al., 1990) motions have led to advocation of conforming (RG = RH) and non-conforming (RG > RH) designs, respectively. The goal of this study was to determine how translation patterns in prosthetically reconstructed joints are affected by joint conformity.
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Karduna et al. (1995) studied this question.
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