Morphometrical comparison between the resected surfaces in osteoarthritic knees and porous-coated anatomic knee prosthesis
Journal
Journal of Musculoskeletal Research
Journal Volume
4
Journal Issue
1
Pages
39-46
Date Issued
2000
Author(s)
Abstract
In total knee replacement, a good match of the prosthesis to bone is very important. Most knees that require total knee replacement are deformed. However, most of the design parameters of knee prosthesis were based on the normal knee. In this series, the dimensions of the resected surfaces in 77 osteoarthritic knees were measured intraoperatively and compared with the corresponding surfaces of the porous-coated anatomic (PCA) (Howmedica, Rutherford, NJ, USA) knee prosthesis. The results showed that the medial femoral condyle was wider than the lateral femoral condyle (p < 0.05) in the resected surfaces. The intercondylar notch of the resected femur was wider than that of the prosthesis (p < 0.05). In the resected tibial plateau, the ratio of the anteroposterior length to the mediolateral width was larger than that of the prosthesis (p < 0.05). The length and width of the resected patella were greater than those of the implant (p < 0.05). According to the difference in morphometrical parameters between the resected surfaces and the knee prosthesis, we suggest that the dimensions of the resected surfaces of the osteoarthritic knee should be important design parameters in total knee prosthesis.
Type
journal article