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A Simple Critical-sized Femoral Defect Model in Mice
Published on: March 15, 2015
Proximal/distal mismatch: type A and C femurs
Michael Christie1, Martha F Brinson
1Southern Joint Replacement Institute, Nashville, Tenn, USA.
Orthopedics
|September 30, 2005
Summary
The S-ROM prosthesis offers a modular design for hip replacement, aiding in complex femoral deformities. Long-term follow-up shows stable stems and no modular junction failures, despite common osteolysis.
Area of Science:
- Orthopedic Surgery
- Biomedical Engineering
- Arthroplasty Research
Background:
- Femoral deformities present challenges in restoring hip joint biomechanics during total hip arthroplasty.
- Standard prostheses may struggle to accommodate complex anatomy, potentially impacting long-term outcomes.
Purpose of the Study:
- To evaluate the long-term efficacy and survivorship of the S-ROM modular prosthesis in primary total hip arthroplasty.
- To assess the impact of the S-ROM's modular design on managing femoral deformities and restoring joint stability.
Main Methods:
- Retrospective review of 73 primary total hip arthroplasties using the S-ROM prosthesis.
- Minimum 10-year follow-up to assess implant stability, osteolysis, and modular junction integrity.
Main Results:
- Osteolysis was observed in 55% of hips, primarily localized proximally.
- No instances of osteolysis were noted distal to the stem/sleeve junction.
- The prosthesis stem demonstrated stability at a mean follow-up of 12 years.
- No failures of the modular junction were reported.
Conclusions:
- The S-ROM prosthesis provides stable fixation and addresses challenges associated with femoral deformities in total hip arthroplasty.
- Its modular design facilitates anatomical adaptation, contributing to durable outcomes without modular junction compromise over 10 years.
