The authors describe seven cases of breakage of the polyethylene acetabular cup observed in 6 patients (5 females and 1 male) after a period of time ranging from 2 to 11 years postsurgery. By comparing the results obtained with those reported in the literature the authors analyze the possible etiopathogenesis of this rare late complication in total hip arthroplasty, which they particularly believe to be caused by hyperwear and fatigue phenomena of the acetabular cup, in turn caused by mechanical overloading.
Considerations on seven cases of breakage of the polyethylene acetabular cup. .
SANGUINETI, FRANCESCA;
1993-01-01
Abstract
The authors describe seven cases of breakage of the polyethylene acetabular cup observed in 6 patients (5 females and 1 male) after a period of time ranging from 2 to 11 years postsurgery. By comparing the results obtained with those reported in the literature the authors analyze the possible etiopathogenesis of this rare late complication in total hip arthroplasty, which they particularly believe to be caused by hyperwear and fatigue phenomena of the acetabular cup, in turn caused by mechanical overloading.
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