Patient Age Influences Outcomes of Hip Hemiarthroplasty For
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The most common arthroplasty procedure for a broken femur neck is hip hemiarthroplasty (FNOF). In some cases, a revision to complete hip arthroplasty (THA) is needed. The aim of this study was to evaluate the outcome of hemiarthroplasty that had been converted to THA, as well as the effects of femoral head size, dual mobility (DM), and constrained liners.

The study included all aseptic first revisions submitted to the Australian Joint Replacement Registry after hemiarthroplasty for FNOF with a THA as the revision protocol. The combined percent revision for all-cause and dislocation was the primary outcome variable. The effects of standard-head THA (less than 32mm), large-head THA (more than 36mm), DM, and restricted liners on revision THA were studied. Kaplan Meyer and competing danger were used to compare outcomes.

Results:
--There were 96,861 hemiarthroplasties performed, with 985 revised to THA. The most common reasons for 1st revision were loosening (49.3%), fracture (17.7%) and dislocation (11.0%).

--Of the hemiarthroplasty procedures revised to THA, 76 had a 2nd revision. The most common reasons for 2nd revision were fracture, dislocation, loosening and infection.

--Femoral head size, DM or constrained liner use did not alter the incidence of all-cause 2nd revision. This did not change when solely looking at patients still alive. A 2nd revision was more likely in patients aged less than 75 years.

The Patient's Age, & not the Articulation used, influences the outcome of hemiarthroplasty performed for FNOF revised to THA.

Source: https://www.sciencedirect.com/science/article/abs/pii/S0883540321003429?dgcid=rss_sd_all
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