Hueter-Anterior approach for Metal on Metal Hip Resurfacing
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The aim of this study was to determine implant survival and subsequent outcomes for metal on metal hip resurfacing (MMHR) using the Hueter-Anterior Approach, including modes of failure (HAA).

Retrospective case analysis yielded 555 MMHR via HAA, with a mean age of 49.4±6.7 years and a mean BMI of 28.1±5.3. The implant survival rate was calculated using Kaplan-Meier curves. At 6-weeks, radiographic evaluation of part location was used to evaluate the technique. SF-12, UCLA, WOMAC, and HOOS scores were used to test patient recorded outcome measures (PROMs).

Results:
--At a mean follow-up of 9.18 years, survivorship was 95.0 % at 5 years and 92.5% at 10 years; males at 96.1% and 93.8% and females at 88.8% and 85.6%, 5 and 10 years respectively.

--There were 37 revisions to total hips (7%) at a mean time of 3.3 years.

--Indications for revision were aseptic loosening of acetabular (n=12) and femoral component (n=7) and pseudotumor (n=6).

--Radiographic parameters were respectable and consistent; median acetabular inclination angle 39.1° and femoral stem shaft angle 137.7°.

--PROMs scores significantly improved and remained stable at 2 and 5-years post-operatively.

Finally, while the surgical technique should always be selected based on the surgeon's clinical expertise, this research has shown that HAA is a safe and effective hip resurfacing treatment. The long-term toxicity of metal ions must also be considered.

Source: https://www.sciencedirect.com/science/article/abs/pii/S0883540321003958?dgcid=rss_sd_all
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