Single-Stage Triple Procedure Bilateral Hip Open Reduction, Acetabuloplasty, and Femoral Shortening for Late Diagnosed Patients With Developmental Dysplasia of the Hip
Bibliographic record
Abstract
BACKGROUND: Developmental dysplasia of the hip is a challenging pediatric condition requiring timely and effective surgical management. This study evaluates the clinical and radiographic outcomes of a simultaneous bilateral single-stage triple procedure, which integrates open reduction, acetabuloplasty, and femoral shortening osteotomy. This approach offers a potential alternative to standard staged procedures by reducing treatment time and cumulative anesthesia exposure. METHODS: This retrospective study included 54 patients who underwent a standardized simultaneous bilateral single-stage procedure at two tertiary centers. The average age at the time of surgery is 3 ± 1.5 years. Clinical and radiographic outcomes were assessed, with follow-up extending to an average of 3 years. RESULTS AND CONCLUSION: In our study of 54 patients (108 hips), significant improvements were noted after surgery with a mean reduction in the acetabular index of 27° ± 7° for the right hip and 26° ± 6° for the left hip (P = 0.0001). The Severin classification indicated 83% excellent, 13% good, and 4% poor outcomes. Redislocation occurred in 6% of hips, with no significant differences in osteonecrosis, lateral subluxation, or redislocation based on sex or age (P > 0.05). All patients achieved good-to-full range of motion by the final follow-up.
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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) | 0.000 | 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".