AI Article Synopsis
- The study investigates how different stem fixation methods (cemented vs. uncemented) affect the management of specific periprosthetic femoral fractures (PFF) after total hip arthroplasty (THA).
- It involved testing synthetic femurs with cemented and uncemented hip prostheses, measuring stiffness and strain under load, and examining fracture fixation using the same method for both types.
- Results indicated that uncemented THAs showed lower stiffness and higher strain on the fracture plate, suggesting a greater risk of failure for PFF fixations in this scenario.
Article Abstract
Introduction: Our understanding of the impact of the stem fixation method in total hip arthroplasty (THA) on the subsequent management of periprosthetic femoral fractures (PFF) is still limited. This study aimed to investigate and quantify the effect of the stem fixation method, i.e., cemented vs. uncemented THA, on the management of Vancouver Type B1 periprosthetic femoral fractures with the same plate.
Methods: Eight laboratory models of synthetic femora were divided into two groups and implanted with either a cemented or uncemented hip prosthesis. The overall stiffness and strain distribution were measured under an anatomical one-legged stance. All eight specimens underwent an osteotomy to simulate Vancouver type B1 PFF's. Fractures were then fixed using the same extramedullary plate and screws. The same measurements and fracture movement were taken under the same loading conditions.
Results: Highlighted that the uncemented THA and PFF fixation constructs had a lower overall stiffness. Subsequently, the mechanical strain on the fracture plate for the uncemented construct was higher compared to the cemented constructs.
Conclusion: PFF fixation of a Vancouver type B1 fracture using a plate may have a higher risk of failure in uncemented THAs.
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Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8734436 | PMC |
| http://dx.doi.org/10.1051/sicotj/2021064 | DOI Listing |
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