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Technical considerations in total knee surgery. Management of patella problems
V M Goldberg1, H E Figgie, M P Figgie
1Department of Orthopaedics, Case Western Reserve University School of Medicine, Cleveland, Ohio.
The Orthopedic Clinics of North America
|April 1, 1989
Summary
Patellofemoral symptoms are a common cause of knee revision, but often manageable nonoperatively. Proper total knee arthroplasty alignment and component placement are key to preventing these issues.
Area of Science:
- Orthopedic Surgery
- Biomedical Engineering
Background:
- Patellofemoral symptoms are the leading cause of aseptic knee revision surgery.
- Most patellofemoral issues are self-limiting and amenable to nonoperative management.
Purpose of the Study:
- To investigate the causes of patellofemoral symptoms after total knee arthroplasty (TKA).
- To identify strategies for preventing and managing these symptoms.
- To explore new designs for minimizing patellofemoral contact stresses.
Main Methods:
- Review of causes for patellofemoral symptoms in TKA.
- Emphasis on nonoperative management including anti-inflammatory medications, exercises, and bracing.
- Analysis of mechanical alignment and component placement in TKA.
- Kinematic analysis of patellofemoral tracking.
Main Results:
- Mechanical malalignment of TKA components is a primary cause of patellofemoral symptoms.
- Adherence to fundamental TKA principles (alignment, stability, joint line) prevents many problems.
- Meticulous preoperative planning and anatomic component placement are crucial for long-term success.
Conclusions:
- Patellofemoral symptoms post-TKA are often linked to malalignment.
- Nonoperative management and sound surgical technique are essential.
- Ongoing research focuses on kinematic analysis and design improvements to reduce patellofemoral stress.