Clinical Outcomes of Total Hip Arthroplasty in Unilateral Crowe Type IV Hip Dysplasia
Bibliographic record
Abstract
Objective: To investigate the functional outcomes of femoral shortening osteotomy concomitant with cementless total hip arthroplasty (THA) in unilateral Crowe type IV hip dysplasia.Methods: A total of 57 patients that underwent THA with femoral shortening osteotomy having the diagnosis of Crowe type IV developmental dysplasia of the hip between January 2005 and March 2016 were retrospectively reviewed.The Harris hip score and Western Ontario and McMaster Universities Osteoarthritis index were used to evaluate functional results.Abductor function was evaluated with the Trendelenburg sign before and after surgery.Major complications were assessed.The pre-operative and post-operative leg height inequality was also measured for all patients.Results: The mean follow-up period of patients with a follow-up of at least 2 years was 47.8 months.The Trendelenburg sign, which was positive in all patients before surgery, was positive in three patients (5.2%) during the last follow-up.The mean pre-operative leg inequality was 6.9±2.4 cm, and decreased to 1.3±0.3cm postoperatively.During the last follow-up, five patients (8.7%) had a complaint of leg length discrepancy due to a longer leg on the THA side.Functional scores of patients during the last follow-up were statistically significant higher compared to the pre-operative period.Conclusion: Applying cementless THA in patients with unilateral Crowe type IV has satisfactory clinical results.To relieve pain and improve functional scores and quality of life, THA is the best treatment option.The rate of complications is high; however, patient can be managed with a secondary intervention or only observation.
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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 | 0.000 | 0.002 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.000 |
| 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) | 0.001 | 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".