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Different stem geometry yielded variations of increased anteversion
Use of a tapered wedge stem in total hip arthroplasty yielded a greater variation in anteversion increases compared with use of metaphyseal filling stems, according to results.
Researchers compared patients who underwent total hip arthroplasty for the treatment of osteoarthritis with either a metaphyseal filling stem (n=78) or a tapered wedge stem (n=83). Researchers used CT scans to measure preoperative femoral anteversion at five levels and postoperative stem anteversion.
Results showed the tapered-wedge stem group had a greater increase in anteversion vs. the metaphyseal-filling stem group. Researchers noted a significantly larger variation of the increase in anteversion in the tapered-wedge stem group, while femoral anteversion was more highly and positively correlated with the metaphyseal-filling stem group. – by Casey Tingle
Disclosures: Taniguchi reports no relevant financial disclosures. Please see the full study for a list of all other authors’ relevant financial disclosures.