EP6.8 Do sagittal spinopelvic parameters impact outcomes following arthroscopic surgery for femoroacetabular impingement? - A systematic review
Bibliographic record
Abstract
Abstract Background: Femoroacetabular impingement (FAI) is a prevalent cause of hip pain in young adults, with 10-20% of patients expressing dissatisfaction after surgery. Stemming from arthroplasty literature, recent studies have examined the influence of spinopelvic balance and its related parameters on postoperative outcomes in FAI, encountering mixed results and using diverse terminology. Purpose: To assess the relationship between spinopelvic parameters and outcomes six months or more after hip arthroscopic surgery for FAI. Methods: A systematic search was conducted across PubMed, EMBASE, and Scopus from their respective inception dates up to January 11, 2024. This search targeted articles with a level of evidence 4 or higher that assessed the relationship between static or dynamic spinopelvic parameters and postoperative outcomes in hip arthroscopic surgery for FAI. Adhering to the Preferred Reporting Items for Systematic Reviews and Meta-analyses (PRISMA) guidelines, two reviewers independently screened the articles for eligibility, extracted relevant data for analysis, and assessed their methodological quality using the Methodological Index for Non-Randomized Studies (MINORS) score. A descriptive and qualitative analysis of the results was conducted. Results: Of the 1609 articles screened, 6 studies involving 531 patients (mean 88.5; range 35 to 200) were included in this review. The mean age of participants was 33.83 (range 30.2 to 39.4) years, with 54.3% (range 26.20 to 68.50%) male, over an average follow-up of 13.12 (range 6 to 27.6) months. All included studies had a level of evidence of III or IV. Four studies examined static and two assessed dynamic spinopelvic parameters. Two studies reported statistically worse outcomes after FAI surgery in at least one patient reported outcome score or category in patients with greater anterior pelvic tilt. No statistically significant relationship was observed with pelvic incidence, lumbar lordosis or sacral slope. One study found that patients with restricted pelvic-lumbar mobility, as measured with a physical examination maneuver, had worse absolute postoperative outcomes. Conclusion: Increased anterior pelvic tilt may correlate with marginally poorer postoperative outcomes in FAI surgery. This review underscores the potential benefits of assessing spinopelvic balance to enhance surgical results, although evidence remains sparse, highlighting the need for further research.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.009 | 0.037 |
| Meta-epidemiology (narrow) | 0.002 | 0.001 |
| Meta-epidemiology (broad) | 0.009 | 0.009 |
| Bibliometrics | 0.011 | 0.010 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.004 | 0.003 |
| Open science | 0.002 | 0.002 |
| Research integrity | 0.003 | 0.001 |
| Insufficient payload (model declined to judge) | 0.012 | 0.001 |
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 source (direct Gemma or distilled Codex), 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".