内侧半月板后根撕裂加速内翻型膝关节炎软骨损伤独立因素分析

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Abstract Objective To determine whether MMPRT is an independent factor for the cartilage damage in varus KOAby studyingthe influences of both the knee varus and medial meniscus posterior root tears(MMPRT) on the cartilage damage in knee osteoarthritis (KOA) patients.Methods From February 2018 to August 2020，a total of 92 subjects were enrolled.The KOA patients with knee varus were divided into the moderate and severe group according to the Outerbridge/ICRS classification.The moderate group contained 45 cases (12 males，33 females)，with an average age of (60.62±6.18)years old，and the sever group contained 47 cases (11 males，36 females)，with an average age of (61.51±5.09)years old.The varus angle was measured and Knee Injury and Osteoarthritis Outcome Score (KOOS) were performed respectively.MMPRT was confirmed under the arthroscopy.Multivariate linear regression was performedfor the cartilage damage. Results In the severe group，the ICRS score，the knee varus angle，the MMPRT incidence，and the KOOS items except for the KOOS-symptomwere significantly higher than those of the moderate group，but there was no difference in the MMPRT grade between the two groups.Multiple linear regression analysis found that the varus angle and the MMPRT incidence were independent factors of ICRS score.Conclusion In KOA patients with knee varus more than 5°，MMPRT is an independent risk factor that promotes the cartilage damage.

Key words： meniscus posterior root tears medial meniscus posterior root tears cartilage damage knee varus knee osteoarthritis

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