Impact of Postoperative Acetabular Wall Index on Patient-Reported Outcomes After Transposition Osteotomy of the Acetabulum in Patients With Hip Dysplasia
Bibliographic record
Abstract
INTRODUCTION: This study aimed to determine the effect of preoperative variables and three-dimensional acetabular correction on patient-reported outcome measures after transposition osteotomy of the acetabulum (TOA), a spherical periacetabular osteotomy. METHODS: We retrospectively reviewed 442 patients (582 hips) with hip dysplasia who underwent TOA between 1998 and 2019 and completed validated questionnaires, including the visual analog scale (VAS) for pain and satisfaction and the Hip disability and Osteoarthritis Outcome Score (HOOS). The median follow-up was 12 years. Associations between patient-reported outcome measures and preoperative variables and postoperative acetabular coverage (lateral center-edge angle, anterior wall index, and posterior wall index) were analyzed. RESULTS: Older age was negatively correlated with HOOS-ADL (r = -0.26, P < 0.001) and HOOS-sports/recreation (r = -0.25, P < 0.001). Male patients reported lower median HOOS-QOL than female patients (P = 0.038). Patients with Tönnis grade 0 had higher median satisfaction-VAS than those with grade 2 (P = 0.031), and higher median HOOS-ADL, sports/recreation, and QOL subscales than those with grade 1 or 2. For postoperative anterior wall index, the deficient group had higher VAS-pain (P = 0.045) and lower HOOS-pain (P = 0.047) than the normal group. For postoperative posterior wall index, the excessive group had lower HOOS-pain than the normal group (P = 0.029). CONCLUSION: Even in preserved hips after TOA, sagittal plane acetabular correction influenced postoperative pain, whereas age, sex, and Tönnis grade affected satisfaction, functional capacity, and QOL. These insights have implications for refining surgical indications and acetabular reorientation strategies, improving postoperative patient experience.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".