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Published on: February 27, 2018
Offset Considerations in Total Hip Arthroplasty
Adam S Driesman1, Jason M Jennings, Charlie C Yang
1From the Colorado Joint Replacement, Denver, CO (Driesman, Jennings, Yang, and Dennis), Department of Mechanical and Materials Engineering, University of Denver, Denver, CO (Jennings and Dennis), the Department of Orthopaedics, University of Colorado School of Medicine, Denver, CO (Dennis), and the Department of Biomedical Engineering, University of Tennessee, Knoxville, TN (Dennis).
Restoring femoral offset during total hip arthroplasty (THA) is crucial for optimal biomechanics and function. Proper offset management prevents complications like pain and instability, enhancing patient outcomes.
Area of Science:
- Orthopedic Surgery
- Biomechanical Engineering
- Medical Device Design
Background:
- Successful total hip arthroplasty (THA) requires precise restoration of patient anatomy and soft-tissue tension.
- Femoral offset is a critical parameter influencing hip joint biomechanics and functional outcomes post-THA.
Purpose of the Study:
- To define femoral offset measurement in THA.
- To describe its role in hip joint biomechanics.
- To outline intraoperative adjustments and potential adverse effects of malrestoration.
Main Methods:
- Review of literature on femoral offset measurement and its impact.
- Analysis of intraoperative factors affecting offset.
- Evaluation of prosthetic implant choices and positioning for stability.
Main Results:
- Lack of femoral offset restoration can lead to bony impingement, edge loading, prosthetic joint instability, and reduced motor performance.
- Excessive femoral offset can cause greater trochanteric pain due to increased muscle and iliotibial band tension.
Conclusions:
- Accurate femoral offset restoration is vital for maximizing stability and dynamic motor performance after THA.
- Understanding and managing intraoperative factors are key to achieving optimal surgical results.
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