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Surgeons more likely to pick larger acetabular component in THR over resurfacing cases
Surgeons are three times more likely to choose a larger acetabular component to accommodate a bigger femoral head in total hip replacement cases rather than hip resurfacing cases after controlling for native femoral head size, according to this study.
“Despite the emphasis on avoiding damage to the femoral neck during hip resurfacing, the ratio of the size of the acetabular component to the diameter of the native femoral head was larger in cementless total hip replacement than in hip resurfacing,” Michael B. Cross, MD, and colleagues from the Hospital for Special Surgery in New York stated in the study abstract.
Cross and colleagues noted a statistically significant difference in the largest acetabular reamer used to the diameter of the native femoral head, 1.03 in hip resurfacing cases vs. 1.09 in hip replacement cases, according to the abstract. The mean ratio for acetabular components also was statistically significant, varying from 1.05 in hip resurfacing cases and 1.09 in hip replacement cases.
Disclosure: Cross has no relevant financial disclosures.