Short- to Medium-term Outcomes After a Modified Broström Repair for Lateral Ankle Instability With Immediate Postoperative Weightbearing
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Bibliographic record
Abstract
BACKGROUND: Anatomic techniques of ankle ligament repair have the advantage of restoring the anatomy and kinematics of the joint. This study presents a technique for anatomic reconstruction of the lateral ligament complex by way of lateral ligament advancement using suture anchors associated with immediate protected full weightbearing; 2- to 5-year clinical outcomes are reported. HYPOTHESIS: This technique of providing an anatomic reconstruction with a secure fixation will enable early rehabilitation with immediate, protected weightbearing, with favorable outcomes. STUDY DESIGN: Case series; Level of evidence, 4. METHODS: Fifty-five patients with chronic lateral ankle instability who failed nonoperative management underwent modified Broström repair (lateral ligament fibular advancement) between 2005 and 2008. The anterior talofibular ligament and calcaneofibular ligament were released from the fibula and advanced using 2 double-loaded metallic suture anchors (3.5 mm). Full weightbearing in a walking boot was allowed from the first postoperative day. Patients were assessed preoperatively and at a minimum 2-year follow-up using the Foot and Ankle Outcome Score. Complication, failure (recurrent instability), and return-to-sport rates were also recorded. RESULTS: Six patients (11%) were lost to follow-up, leaving a study group of 49 patients (23 men, 26 women). The mean age at the time of surgery was 25 years (range, 18-37 years), with a mean duration of symptoms of 1.8 years (range, 6 months to 5 years). The mean follow-up time was 42 months (range, 24-60 months). Significant improvement was seen in the Foot and Ankle Outcome Score from preoperatively to postoperatively (from 36 to 75.4, P < .001): the pain subscale improved from 35 to 75 (P < .001), the symptom subscale from 29 to 77 (P = .01), the function subscale from 45 to 77 (P < .001), the function in sports and recreation subscale from 38 to 70 (P < .001), and the foot and ankle-related quality of life subscale from 35 to 78 (P < .001). No significant difference in range of motion with the contralateral side was seen (P = .34). The failure rate was 6%, with 3 patients reporting residual instability after a traumatic retear. Two cases of superficial wound infection were seen. One case of temporary neurapraxia of the superficial peroneal nerve was observed. The return-to-sport rate was 94%. CONCLUSION: This study demonstrates that anterior talofibular ligament and calcaneofibular ligament advancement using suture anchor fixation is an effective procedure for the treatment of chronic lateral ankle instability and allows immediate weightbearing.
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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 | 0.002 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| 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 it