Mechanical versus Kinematic Alignment in Total Knee Arthroplasty
Bibliographic record
Abstract
This chapter presents a case scenario of a 65-year-old man with end-stage degenerative knee disease scheduled for total knee arthroplasty (TKA). A stable knee with a neutral mechanically aligned lower limb mechanical alignment (MA) has been one of the primary surgical aims of TKA, as it provides good long-term implant survivorship. A case-control study demonstrated that MA TKAs displayed several significant knee kinematic differences to a healthy group: less sagittal plane range of motion, decreased maximum flexion, increased adduction angle, and increased external tibial rotation. One of the concerns about performing knee–ankle (KA) TKA is that it might be associated with an increased risk of early failure and other complications. Longer follow-up is needed to assess survivorship and define the correct indications for KA techniques in TKA. The chapter provides recommendations for implementing evidence-based practice in the clinical setting.
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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 | 0.001 | 0.002 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.019 | 0.001 |
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".