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Thirty-day mortality after total knee arthroplasty
J Parvizi1, T A Sullivan, R T Trousdale
1Department of Orthopaedics, Mayo Clinic and Mayo Foundation, Rochester, MN 55905, USA.
The Journal of Bone and Joint Surgery. American Volume
|August 17, 2001
Summary
Total knee arthroplasty poses a small risk of perioperative death, particularly for older patients with cemented implants and pre-existing cardiopulmonary conditions. Uncemented implants and revision surgeries were associated with lower mortality rates.
Area of Science:
- Orthopedic Surgery
- Arthroplasty Research
- Patient Safety
Background:
- Sporadic reports indicate perioperative mortality risks associated with total knee arthroplasty (TKA).
- Understanding risk factors is crucial for improving patient outcomes in TKA procedures.
Purpose of the Study:
- To identify and analyze risk factors contributing to perioperative mortality following total knee arthroplasty.
Main Methods:
- A retrospective review of 22,540 total knee arthroplasty cases (1969-1997).
- Analysis of patient records to determine mortality within 30 days post-surgery.
- Evaluation of factors including age, gender, diagnosis, fixation method, and surgical approach.
Main Results:
- The overall 30-day mortality rate was 0.21% (47/22,540).
- No deaths occurred with uncemented implants versus 0.24% with cemented implants (p < 0.0001).
- Higher mortality observed in primary vs. revision arthroplasty, simultaneous bilateral procedures, and patients with pre-existing cardiopulmonary disease.
Conclusions:
- Significant mortality risk factors for TKA include age over 70, primary surgery, cemented prostheses, and pre-existing cardiopulmonary disease.
- Simultaneous bilateral TKA is associated with increased perioperative mortality.
- Uncemented implants and revision surgery appear safer regarding perioperative mortality.