Determining the Isometric Point of the Knee
Bibliographic record
Abstract
Posteromedial and posterolateral reconstructions of the knee are frequently required in the management of knee dislocations. This study compares the accuracy of radiographic reference points to established anatomical landmarks in reproducing the isometric points of the posteromedial corner and posterolateral corner (PLC) of the knee. Posteromedial and posterolateral surgical approaches were made in 20 cadaveric knees. The posteromedial and posterolateral isometric points of each femur were determined using the anatomic landmarks and radiographic reference points in a randomized order. An Isometer was used to measure the displacement, to the nearest millimeter; knees were passed into flexion. A two-tailed t-test was used to analyze the data and statistical significance was set to p < 0.05. For the isometric point of the PLC, the radiographic method resulted in a mean displacement of 1.63 mm as the knee was passed from extension into flexion, while the anatomic method had a mean displacement of 4.84 mm (p < 0.00018). The mean displacement on the posteromedial side using the radiographic method was 2.10 mm as the knee was passed from extension into flexion, while the anatomic method resulted in 3.21 mm of displacement (p = 0.074).
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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 | 0.003 | 0.002 |
| 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".