LOCKING COMPRESSION PLATES FOR THE TREATMENT OF PERI-PROSTHETIC FEMORAL FRACTURES AROUND WELL-FIXED TOTAL HIP AND KNEE IMPLANTS
Bibliographic record
Abstract
Background Periprosthetic fracture fixation can be a difficult and complex procedure. The incidence of such fractures is increasing relative to the high prevalence of elderly patients with joint arthroplasty and osteoporosis. Locking plates were introduced for the management of complex periarticular fractures in osteoporotic bone, but there is little information on the use of these plates for the management of periprosthetic fractures. The purpose of this study was to review the early experience with these plates in managing complex Vancouver B1 and C periprosthetic fractures at our academic centre to determine the effectiveness in achieving union, and to identify any potential complications associated with their use. Methods We evaluated the results of Vancouver B1 and type C periprosthetic fractures treated with Synthes LCP. The mean age of the patients at the time of surgery was 76 years. 5 patients were men and 10 were women. There were 8 Vancouver B1 and 7 Vancouver C fractures. 6 fractures had failed previous operative treatment. No patient was lost to follow-up. We assessed time to union, complications, and identified criteria for cortical fixation using these plates. Results At the time of the most recent follow-up, all patients had gone on to radiographic union. Time to union was 6 months. All patients continue to have pain, and all continue to use walking aids. We discuss technical considerations, plate length, fixation and use of allograft. Conclusion The Synthes Locking Plate system has been shown to provide good results for use in Type C and B1 periprosthetic fractures. Complications were surprisingly low considering the age group involved and associated co-morbidities. Surgery is complex requiring approximately 4 hours with expected blood loss of > 1 litre. Rehabilitation can be slow and prolonged but all patients were ambulatory at 1 year.
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 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 | 0.000 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.002 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 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 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".