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Patellar fractures in total knee arthroplasty
R E Windsor1, G R Scuderi, J N Insall
1Hospital for Special Surgery, New York Hospital--Cornell University Medical College, New York 10021.
The Journal of Arthroplasty
|January 1, 1989
Summary
Patellar fractures after total knee arthroplasty occur in 3-21% of cases, often due to surgical complications like avascular necrosis. Management options include conservative or surgical approaches.
Area of Science:
- Orthopedic Surgery
- Biomedical Engineering
Background:
- Patellar fractures are a known complication following total knee arthroplasty (TKA).
- The incidence of patellar fractures post-TKA ranges significantly, from 3% to 21%.
Purpose of the Study:
- To summarize the incidence, causes, and management of patellar fractures after TKA.
Main Methods:
- Literature review of studies reporting patellar fracture incidence after TKA.
- Analysis of attributed causes including surgical techniques and complications.
- Overview of current management strategies.
Main Results:
- The incidence of patellar fractures following TKA is variable (3-21%).
- Causes include avascular necrosis, surgical trauma (medial arthrotomy, lateral release), bone resection, thermal injury, and anatomical factors.
Conclusions:
- Patellar fractures are a significant complication of TKA with multifactorial causes.
- Management decisions depend on fracture severity and patient factors, with both conservative and surgical options available.