Treatment of Vancouver type B periprosthetic femoral fractures after total hip arthroplasty.
Bibliographic record
Abstract
Objective To discuss the methods of treating Vancouver type B periprosthetic femoral fractures after total hip arthroplasty and observe the clinical results to reconstruct the periprosthetic fractures with cortical bone plate allografts. Methods Twenty-two patients (7 males and 15 females, mean age, 65 years; range, 53-75 years) with Vancouver type B periprosthetic femoral fractures were treated. Five type B1 cases underwent open reduction and allograft strut, 4 type B2 patients underwent open reduction and revision with a long uncement or cement stems, and 13 type B3 cases underwent open reduction and revision with a long cement stem, and bone allograft. The mean duration of follow-up was 67 months. T lymphocytes, Harris score, radiographs and bone scintigraphy were used to evaluate the outcomes. Results Twenty-two cases got fracture healing, no stem loosening, immunity rejection and infection in all patients. Twenty-one cases were able to walk and 1 patient required a walking aid. The mean Harris score, was 89 at final follow-up. X-ray film indicated that fracture was healed at the 3rd months. Osseous union of the allagraft to the host femur occurred, the cortex of host femur was more thick 3-5 mm compared preoperation, and the nuclein distribution in the area of allograft cortical bone plates was more concentrated compared the contralateral at the 12nd month postoperatively. Three cases allograft strut was partieally absorbed 12 months after surgery, however, the absorption stopped, and allograft plates being incorporation to host bone at the 24th month postoperatively. Ten degrees deformity laterally was found for 1 case with type B,. Conclusion The treatment methods should depend on the type of periprosthetic femoral fractures in order to get good outcome. It can provide a satisfactory result using allogral't strut for treating Vancouver type B periprosthetic femoral fractures, which can not only maintain fracture stability, but also improve fracture healing, host bone augmentation. Key words: Arthroplasty,replacement,hip; Femoral fractures; Transplantation,homologous
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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) | 0.000 | 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) | 0.002 | 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".