Observational studyArchives of orthopaedic and trauma surgery2025
Direction of pelvic obliquity after total hip arthroplasty for dysplastic hip osteoarthritis: a retrospective observational study.
Observational study in Archives of orthopaedic and trauma surgery, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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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.
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Who cites it
2 citing papers in PubMed.
- Clinical cutoff value of lumbar bending range for predicting residual pelvic obliquity after total hip arthroplasty in dysplastic hip osteoarthritis.Archives of orthopaedic and trauma surgery · 2026Article
- Adult Gait Kinematics and Muscle Strength After Childhood Pemberton Osteotomy for Developmental Dysplasia of the Hip.Acta orthopaedica et traumatologica turcica · 2026Article
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Authors and funding
6 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
introductionPelvic obliquity (PO) in dysplastic hip osteoarthritis (DHOA) can present as either upward or downward tilting of the affected side. This study investigated the influence of preoperative PO direction on postoperative clinical outcomes and hip-spine morphology in patients undergoing total hip arthroplasty (THA). MATERIALS AND
methodsData from 116 (21 men, 95 women) patients with unilateral DHOA, who underwent THA at a single institution between June 2018 and September 2023 and exhibited ≥ 2° of PO, were analyzed. Patients were categorized into two groups: upward PO (U-PO [≥ 2° upward tilt, n = 35]); and downward PO (D-PO [≥ 2° downward tilt, n = 81]). Patient demographic information, surgery-related factors, hip function scores, and radiographic parameters of the hip, lower limbs, and spine were compared between the groups.
resultsExcept for the duration of hip disorders, no significant differences were observed in patient background and surgical data between the groups. Preoperatively, the U-PO group exhibited a larger acetabular offset, greater hip adduction angle, longer functional leg length on the affected side, and greater ipsilateral convex lumbar scoliosis than the D-PO group (P = 0.034, P < 0.001, P < 0.001, and P < 0.001, respectively). Postoperatively, a greater hip adduction angle and longer functional leg length discrepancy persisted in the U-PO group compared to those in the D-PO group (P < 0.001 and P = 0.002, respectively). The median (interquartile range) residual PO was greater in the U-PO group (3° [0-4°]) than that in the D-PO group (1° [0-3°]) (P = 0.009). Compared with the D-PO group, the mean postoperative hip Japanese Orthopaedic Association scores were significantly lower in the U-PO group (85 [81-92] vs. 92 [85-96], P = 0.016).
conclusionThe U-PO group exhibited greater residual hip adduction angles, longer functional leg lengths on the affected side, and less improvement in PO after THA than the D-PO group, resulting in poorer postoperative hip function.
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