Outcome After Tibial Plateau Fracture: How Important Is Restoration of Articular Congruity?
Bibliographic record
Abstract
OBJECTIVES: Does restoration of articular congruity have any effect on long-term outcome following tibial plateau fracture? DESIGN: Cohort study. SETTING: A secondary hospital in New Zealand, which services a population of 150,000. PATIENTS: All patients with a depressed tibial plateau fracture seen over a 6 year period were invited to participate in the study. There were 41 patients (average age 54 years) recruited from an eligible population of 97. Average follow-up was 3.9 years after injury. INTERVENTION: Patients had either been treated operatively or nonoperatively after depressed tibial plateau fracture. MAIN OUTCOME MEASUREMENTS: The primary outcome analyzed was residual articular depression (as measured on coronal plane tomogram) and its effect on clinical outcome [Oxford Knee Score, Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) score, Knee injury and Osteoarthritis Outcome Score (KOOS), Iowa knee score, and a visual analogue satisfaction score] and functional outcome (knee range of motion) at a minimum of 12 months after fracture. Patients were divided into 3 groups based on the amount of articular depression: <2.5, 2.5-5.0, and ≥5.0 mm. The secondary outcome analyzed was mechanical axis (as measured on weightbearing long leg alignment radiographs) and its effect on clinical and functional outcomes. RESULTS: Statistical analysis found that patients with <2.5 mm of articular depression had significantly smaller losses in knee range of motion (P = 0.000), better Oxford (P = 0.006), Iowa (P = 0.003), and KOOS symptom (P = 0.011) and pain (P = 0.001) scores. We found that there was no significant relationship between restoration of mechanical axis and loss in range of motion (P = 0.126), Oxford (P = 0.584), WOMAC (P = 0.101), IOWA (P = 0.418), Visual Analogue Score (VAS) (P = 0.466) or any subgroup within the KOOS survey other than activities of daily living (P = 0.029). CONCLUSIONS: This study found that patients with smaller amounts of residual articular depression at a minimum of 12 months after tibial plateau fracture had significantly smaller losses in knee range of motion and better functional outcomes than those with greater amounts of articular depression. LEVEL OF EVIDENCE: Prognostic Level IV. See Instructions for Authors for a complete description of levels of evidence.
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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) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 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) | 0.000 | 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".