Highly Crosslinked Polyethylene in Total Hip Arthroplasty
Bibliographic record
Abstract
This chapter presents a case scenario of a 55-year-old active female who presents to an orthopedic surgeon with advanced osteoarthritis in her right hip. Conservative treatment options have been exhausted and she is scheduled for a total hip arthroplasty (THA) with the use of ultra-high-molecular-weight polyethylene (UHMWPE). The purpose of highly crosslinked polyethylene (HCLPE) is to improve the longevity of THA by decreasing the wear rate of the bearing used during THA. Many of the studies are randomized controlled trials to demonstrate the improvement in wear rates with HCLPE as compared to regular polyethylene. HCLPE results in a significant reduction in polyethylene wear in vivo compared with regularly UHMWPE. There has been concern that the smaller wear particles of THA will lead to an increased risk of osteolysis compared to UHMWPE. The chapter also provides recommendations for implementing evidence-based practice in the clinical setting.
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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 | 0.001 | 0.002 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.000 | 0.001 |
| Research integrity | 0.002 | 0.001 |
| Insufficient payload (model declined to judge) | 0.010 | 0.004 |
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".