Outcome of Posterior Ankle Arthroscopy for Hindfoot Impingement
Bibliographic record
Abstract
PURPOSE: To provide short-term clinical results of posterior ankle arthroscopy in the treatment of posterior ankle impingement. METHODS: This was a retrospective evaluation of the clinical outcomes of posterior ankle arthroscopy in a series of patients with posterior ankle pain. RESULTS: Of 23 patients who underwent 24 posterior ankle arthroscopies between July 1998 and February 2004, 15 patients (mean age, 25 years) with 16 posterior ankle arthroscopies were evaluated at a mean follow-up time of 32 months (range, 6 to 74). Procedures carried out were: excision of os trigonum (11); decompression of prominent posterior talar process (5); tenolysis of flexor hallucis longus (5); removal of loose body (1); osteochondritis dissecans lesion debridement (1); and arthrotomy (1). The average time to return to work was 1 month (range, 0 to 3) and to sports, 5.8 months (range, 1 to 24). Fourteen patients returned to their preinjury level of athletics. Mean Health Survey Short Form (SF-12) scores were 51.80 for the mental component (range, 30.77 to 60.53) and 55.80 for the physical component (range, 44.26 to 63.33). Mean score on the American Orthopaedic Foot and Ankle Society Ankle and Hindfoot Scale was 91 (range, 77 to 100) and on the Lower Extremity Functional Scale was 75 (range, 65 to 80). Documented complications included temporary numbness in the region of the scar in 5 patients and temporary ankle stiffness in 1 patient. There were no permanent neurovascular injuries. All subjects reported significant improvement and indicated that they would undergo the surgery again if needed. CONCLUSIONS: Functional and clinical evaluations following posterior ankle arthroscopy revealed that all patients were very satisfied. They reported good to excellent health-related quality of life scores, satisfactory functional outcomes, and a high rate of return to sporting activities. Most importantly, no significant complications were encountered. This review suggests that posterior ankle arthroscopy is a safe and effective surgical procedure in the treatment of posterior ankle impingement. LEVEL OF EVIDENCE: Level IV, therapeutic case series.
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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 | 0.001 | 0.006 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.000 | 0.001 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.001 | 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 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".