Lateral laxity in flexion increases the postoperative flexion angle in cruciate-retaining total knee arthroplasty |
| |
Authors: | Kobayashi Tatsuya Suzuki Masahiko Sasho Takahisa Nakagawa Koichi Tsuneizumi Yoshikazu Takahashi Kazuhisa |
| |
Institution: | Department of Orthopaedic Surgery, Graduate School of Medicine, Chiba University, Chiba City, Chiba, Japan. |
| |
Abstract: | Thirty-eight patients diagnosed with osteoarthritis underwent 41 cruciate-retaining total knee arthroplasties. In varus and valgus tests at flexion, subjects were seated on a table at 80° of knee flexion; 50 N was applied perpendicular to the lower leg. The factors affecting the postoperative flexion angle were investigated in a multiregression analysis. The mean joint angles of the flexion-valgus and flexion-varus tests were 3.4° ± 1.4° and 6.2° ± 2.5°, respectively. The flexion-varus angle was correlated with the postoperative flexion angle (P < .01). The mean postoperative flexion angles were 110.8° ± 9.6° and 118.1° ± 8.0° in the groups with the flexion-varus angle of 6° or less and more than 6°, respectively (P = .02). Slack lateral laxity in flexion had a significant effect during knee flexion in cruciate-retaining total knee arthroplasty. |
| |
Keywords: | cruciate-retaining total knee arthroplasty flat-on-flat postoperative flexion angle lateral laxity flexion stress test |
本文献已被 ScienceDirect PubMed 等数据库收录! |