ArticleInternational orthopaedics2026
Morphological features and long-term outcomes after periacetabular osteotomy for borderline hip dysplasia.
Article in International orthopaedics, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
2 citing papers in PubMed.
- Pelvic osteotomies for acetabular dysplasia: development and current concepts in Japan.International orthopaedics · 2026Review
- A brief story of Japanese orthopaedics: from the ancestral origins in Kyushu and Nara to the foundation of the Japanese orthopedic association in Tokyo.International orthopaedics · 2026Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
10 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeThe role of periacetabular osteotomy (PAO) in symptomatic borderline hip dysplasia (borderline HD) remains controversial because the lateral centre-edge angle may not reflect global dysplastic morphology. We examined whether selected borderline dysplastic hips showed additional dysplastic features and compared mid- to long-term outcomes with frank hip dysplasia (frank HD).
methodsThis retrospective comparative cohort study included 33 patients (35 hips) with borderline HD (18° ≤ lateral centre-edge angle < 25°) and 319 patients (357 hips) with frank HD (lateral centre-edge angle < 18°) treated with PAO from 1996 to 2009. Radiographic morphology, Kaplan-Meier total hip arthroplasty-free survival, and patient-reported outcome measures (PROMs) after 1:3 propensity score matching were analysed.
resultsIn the borderline HD cohort, 33 hips (94.3%) met at least one frank HD criterion other than lateral centre-edge angle and 12 hips (34.3%) met three or more. Mean follow-up was 14.0 years in the borderline HD cohort and 13.9 years in the frank HD cohort. One borderline dysplastic hip and 50 frank dysplastic hips underwent total hip arthroplasty. The 20-year survival rate was 90.0% in borderline HD and 78.8% in frank HD (log-rank p = 0.101). Matched PROMs did not differ significantly between groups.
conclusionBorderline dysplastic hips selected for PAO usually showed multidirectional dysplastic morphology resembling frank HD. In carefully selected symptomatic borderline HD, PAO was associated with favourable long-term survival and PROMs comparable with frank HD.
Indexed as
Identifiers
42332260What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.