The association between high-grade pivot-shift and complete lateral meniscus posterior root tear after anterior cruciate ligament ruptures
10.3760/cma.j.issn.0253-2352.2019.11.005
- VernacularTitle: 前十字韧带撕裂后的高度轴移与完全性外侧半月板后根部损伤的相关性
- Author:
Tong ZHENG
1
;
Xuesong WANG
;
Jin ZHANG
;
Hui ZHANG
;
Guanyang SONG
;
Yue LI
;
Zhijun ZHANG
;
Hua FENG
Author Information
1. Sports Medicine Service, Beijing Jishuitan Hospital, Beijing 100035, China
- Publication Type:Journal Article
- Keywords:
Anterior cruciate ligament;
Menisci, tibial;
Joint instability;
Risk factors;
Case-control studies
- From:
Chinese Journal of Orthopaedics
2019;39(11):683-690
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To investigate the association between high-grade pivot-shift and complete lateral meniscus posterior root (LMPR) tear in patients with anterior cruciate ligament (ACL) ruptures.
Methods:From January 2013 to December 2017, a total of 86 ACL injured patients with LMPR tears were reviewed retrospectively. There were 66 males and 20 females with an average age of 27.8±8.3 years (range 16-49 years) and an mean BMI of 25.1±3.2 kg/m2 (range 17.4-33.9 kg/m2). The average duration from injury to surgery was 33.5±79.4 weeks (range 3 days to 11 years). All patients were classified into high-grade pivot-shift group (60 patients of IKDC grade II-III) and low-grade pivot-shift group (26 patients of IKDC grade 0-I) according to the results of pivot-shift tests under anesthesia before ACL reconstructions. Predictive factors of high-grade pivot-shift were analyzed by multivariable Logistic regression, involving degree of LMPR tear, integrity of meniscofemoral ligament, width of lateral meniscal extrusion, KT-1000 arthrometer side-to-side difference, age, sex, and BMI.
Results:The prevalence of complete LMPR tear in high-grade pivot-shift group was higher than that in low-grade pivot-shift group. High-grade pivot-shift was associated to complete LMPR tear [OR=4.096, 95% CI(1.339, 12.371), P=0.013] and KT-1000 arthrometer side-to-side difference [OR=9.632, 95% CI (3.095, 29.975), P<0.001]. The association between high-grade pivot-shift and complete LMPR tear was more striking in patients with duration from injury to surgery ≥12 weeks [OR=8.343, 95%CI(1.224, 56.853), P=0.030]. High-grade pivot-shift did not associated with meniscofemoral ligament, lateral meniscal extrusion, age, sex and BMI (P>0.05).
Conclusion:In patients with ACL ruptures, complete LMPR tear was an independent risk factor of high-grade pivot-shift, especially for patients with 12 weeks at least duration from injury to surgery.
