ArticleInternational orthopaedics2026
Periacetabular osteotomy provides durable correction and low arthroplasty conversion at ≥ 7 years: prospective middle eastern study.
Article in International orthopaedics, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundLong-term prospective data on periacetabular osteotomy (PAO) from Middle Eastern populations are limited. This study evaluated ≥ seven year clinical, functional, and radiographic outcomes following PAO and identified predictors of survivorship.
methodsThirty-six consecutive patients (34.6 ± 7.2 years; 78% female) undergoing PAO (2014-2018) were prospectively followed. Inclusion required symptomatic dysplasia with Tönnis 0-2. Outcomes included HHS, WOMAC, HOS, SF-36, radiographic parameters (LCEA, AI), complications, and THA conversion. Reliability, multivariate regression, and Kaplan-Meier analyses were performed.
resultsAt 7.8 ± 1.2 years, HHS improved from 63.5 ± 11.2 to 89.6 ± 7.8 (p < 0.001). LCEA increased from 16.2 ± 4.3° to 31.8 ± 3.9° and AI decreased from 22.8 ± 5.1° to 7.2 ± 3.6°. ICC for measurements was 0.92. Complications occurred in 16.7% (mostly minor). THA conversion was 5.6%, both with preoperative Tönnis 2 and correction < 12°. Magnitude of LCEA correction independently predicted HHS improvement (β = 0.41, p < 0.01).
conclusionsPAO achieved durable correction and sustained functional improvement with low THA conversion at mid- to long-term follow-up. Preoperative cartilage status and adequacy of correction are key determinants of outcome.
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