FP7.6 Does hip arthroscopy at the time of Periacetabular Osteotomy improve the clinical outcome for the treatment of Hip Dysplasia? A Multi-Center Randomized Clinical Trial
Bibliographic record
Abstract
Abstract A peri-acetabular osteotomy (PAO) is often sufficient to treat the symptoms and improve quality of life for symptomatic hip dysplasia. However, acetabular cartilage/labral pathologies are very commonly present and there is a lack of evidence examining the benefits of the adjunct arthroscopy to treat these. The goal of this study is to compare the clinical outcome of patients undergoing PAO with and without arthroscopy with primary end-point being the International Hip Outcome Tool-33 (iHOT-33) at one year. In a multi-center study, two hundred and three patients with symptomatic hip dysplasia were randomized: 97 patients undergoing an isolated PAO (mean age 27 years (16-44); mean BMI of 25.1 (18.3-37.2); 86% females) and 91 patients undergoing PAO with an arthroscopy [mean age 27 years (16-49); Mean BMI of 25.1 (17.5-25.1); 90% females]. At a mean follow up of 2.3 years (range 1-5 years), all patients exhibited significant improvements in their functional score with no significant differences between PAO plus arthroscopy versus PAO alone at 12 months post-surgery on all scores: pre-op iHot-33 score 31.2 (SD 16.0) vs. 36.4 (SD 15.9) and 12 months post-operative was 72.4 (SD 23.4) vs. 73.7 (SD 22.6)]. Pre-operative HOOS-pain score was [60.3 (SD 19.6) vs. 66.1 (SD 20.0)] and 12 months post-operative was [88.2 (SD 15.8) vs. 88.4 (SD 18.3)]. Mean Pre-operative Physical Health PROMIS score was [42.5 (SD 8.0) vs. 44.2 (SD 8.8)] and 12 months post-operative was [48.7 (SD 8.5) vs. 52.0 (SD 10.6)]. Four patients having PAO without arthroscopy necessitated an arthroscopy later to resolve persistent symptoms and 1 patient from the PAO plus arthroscopy necessitated an additional arthroscopy. This RCT has failed to show any significant clinical benefit in performing hip arthroscopy at the time of the PAO at one-year followup. Longer follow up will be required to determine if hip arthroscopy provides added value to a PAO for symptomatic hip dysplasia.
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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 | 0.009 | 0.006 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.002 | 0.003 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.001 |
| 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".