AB107. SOH25_AB_059. Improved performance of modern cementless total knee arthroplasty (TKA) across international registries: a comparative review
Bibliographic record
Abstract
Background: Cementless fixation in total knee arthroplasty (TKA) has been associated with higher revision rates in the past. However, due to advancements in design, as well as surgical technique, cementless TKA performance has made significantly improvements. The advantages of cementless fixation include reduced cement-related complications, shorter operating times and the potential benefits of osseointegration. Our study aimed to assess the improvement in revision rates for cementless TKA over the last 10 years based on international registry reports. Methods: A comprehensive retrospective review was conducted of six major English-speaking knee arthroplasty registries across the world, including the National Joint Registry of England and Wales, Northern Island, Isle of Man and Guernsey (hereby referred to as British), Swedish, Canadian, American, Australian, and New Zealand National Joint Registry. Data was collected from the year 2014 along with the most recent annual report published, 2022 or 2023. Data points collected included usage rates of cemented and cementless prostheses for primary TKA, their respective revisions rates, and indications for revision. Results: Across four databases, there was an average 8.3% increase in the utilization of cementless fixation for primary TKA over the past decade. Three registries reported a reduction in revision rates for cementless fixation. Lower revision rates for cementless compared to cemented TKA were observed in the most recent American (3.2% cemented vs. 2.8% cementless) and New Zealand annual reports (11.8% cemented vs. 4.5% cementless). In 2022, the British registry reported lower rates of revision for infection with cementless fixation (0.56 vs. 0.89). Conclusions: International registries demonstrate increased utilisation of cementless TKA. Cementless TKA was reported to have lower revision rates in the most recent US and New Zealand annual reports when compared to cemented TKA.
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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) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.003 | 0.001 |
| 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 | 0.001 |
| 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".