Revision total hip arthroplasty with a modular tapered stem
Bibliographic record
Abstract
Femoral stem revision surgery with proximal bone loss may be treated with modular uncemented distal fixation stems. Early results of the ZMR tapered stems with relatively fewer cases were encouraging. In this prospective study, we evaluated the 2 to 10 years survivorship, associated complications and functional outcomes of 84 cases of femoral revision using the ZMR tapered stem. The indications for revision were aseptic loosening (50), periprosthetic fracture (12), infection (17), stem fracture (4) and instability (1). The mean follow-up was 46 months (range, 25-117). The Kaplan-Meier survival with femoral re-revision for any reason as an end-point was 92.7% (95% CI: 87.7%-97.7%). The mean Harris hip score improved from 37 (10-77) points before operation to 72 (41-96) points at last follow-up. The ZMR tapered stem has shown satisfactory results in 2 to 10 years followup in various femoral stem revision conditions.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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) | 0.000 | 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) | 0.003 | 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".