Comparison of Revision Rates Due to Aseptic Loosening between High-Flex and Conventional Knee Prostheses
The Journal of Korean Knee Society
; : 161-166, 2018.
Article
in English
| WPRIM (Western Pacific)
| ID: wpr-759315
Responsible library:
WPRO
ABSTRACT
PURPOSE:
The purpose was to evaluate and compare the revision rate due to aseptic loosening between a high-flex prosthesis and a conventional prosthesis. MATERIALS ANDMETHODS:
Two thousand seventy-eight knees (1,377 patients) with at least 2 years of follow-up after total knee arthroplasty were reviewed. Two types of implants were selected (LPS-Flex and LPS, Zimmer) to compare revision and survival rates and sites of loosened prosthesis component.RESULTS:
The revision rate of the LPS-Flex (4.9%) was significantly higher than that of the conventional prosthesis (0.6%) (p<0.001). The 5-, 10-, and 15-year survival rates were 98.9%, 96.2% and 92.0%, respectively, for the LPS-Flex and 99.8%, 98.5% and 93.5%, respectively, for the LPS. The survival rate of the high-flex prosthesis was significantly lower than that of the conventional prosthesis, especially in the mid-term period (range, 5 to 10 years; p=0.002). The loosening rate of the femoral component was significantly higher in the LPS-Flex prosthesis (p=0.001).CONCLUSIONS:
The LPS-Flex had a higher revision rate due to aseptic loosening than the LPS prosthesis in the large population series with a long follow-up. The LPS-Flex should be used carefully considering the risk of femoral component aseptic loosening in the mid-term (range, 5 to 10 years) follow-up period after initial operation.
Full text:
Available
Database:
WPRIM (Western Pacific)
Main subject:
Arthroplasty
/
Prostheses and Implants
/
Survival Rate
/
Follow-Up Studies
/
Arthroplasty, Replacement, Knee
/
Knee
/
Knee Prosthesis
Type of study:
Observational study
/
Prognostic study
Language:
English
Journal:
The Journal of Korean Knee Society
Year:
2018
Document type:
Article