The Relationship between PCO Changes and Knee Flexion Function after TKA

doi:10.7517/issn.1674-0475.211112

Abstract

Abstract: This paper investigated the relationship between femoral posterior condyle eccentricity (PCO) and knee flexion function after total knee arthroplasty (TKA). Ninety-two patients underwent unilateral TKA were selected, according to the prooperative and postoperative change value of PCO the patients were divided into PCO change value ≥ 0 group (n=55) and PCO change value < 0 group (n=37). After 1 month surgery the knee flexion angle of patients with PCO changes ≥0 was significantly higher than those of patients with PCO changes < 0 (P<0.05). The total score of Western Ontario and McMaster University Osteoarthritis Index score (WOMAC), pain, daily activity and the mean trajectory error, mean strength difference and stability index in the PCO≥0 group at 12 months after surgery were significantly lower than those in the PCO changes < 0 group (P<0.05), while the New York Special Surgery Hospital (HSS) function and activity scores were significantly higher than those in PCO changes < 0 group (P<0.05). The unchanged or increased PCO contribute to the rapid recovery of knee flexion function after TKA, help to improve knee function, and patients have better proprioception.

Key words: femoral posterior condyle eccentricity, total knee replacement, knee flexion, the effect

SANG Peng, LIU Yi, YANG Jibin, SUN Pengpeng, ZOU Gang, JIN Ying. The Relationship between PCO Changes and Knee Flexion Function after TKA[J]. IMAGING SCIENCE AND PHOTOCHEMISTRY, 2022, 40(3): 520-524.

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