拨号试验——内侧半月板后根部撕裂未识别的预测因素  

Dial test——Unidentified predictive factors for the medial meniscus posterior root tears

作　　者：任富继 吴疆[1] 赵栋[1] 王蕊[1] 黄竞敏[1] Ren Fuji;Wu Jiang;Zhao Dong;Wang Rui;Huang Jingmin(The Second Ward of Sports Injury and Arthroscopy,Tianjin Hospital(Tianjin University Tianjin Hospital),Tianjin 300211,China)

机构地区：[1]天津市天津医院(天津大学天津医院)运动损伤与关节镜二病区,天津300211

出　　处：《中国运动医学杂志》2024年第5期335-340,共6页Chinese Journal of Sports Medicine

摘　　要：目的:通过拨号试验评价内侧半月板后根部撕裂(medial meniscus posterior root tear,MMPRT)对胫骨外旋的影响;评估MMPRT隧道拉出法修复对恢复胫骨病理性旋转的作用。方法:本回顾性研究纳入了40例在2022年1月至2023年1月期间接受内侧半月板后根隧道拉出(pull-out)法修复术的患者。通过对患者手术前、后患侧及健侧膝关节屈曲30°/90°拨号试验的检查,评估胫骨外旋的变化。结果:40例MMPRT患者年龄56.4±7.5岁,体重指数24.1±3.0 kg/m^(2),其中男性6例(34%),女性34例(85%),从损伤到接受手术的中位时间为3.8±2.9月。患侧术前30°和90°拨号试验提示的胫骨外旋角度分别为31.34°±5.38°、36.75°±6.62°;患侧术后30°和90°拨号试验提示的胫骨外旋角度分别为24.24°±5.88°、24.76°±5.47°,与术前比较均下降,差异有统计学意义(P=0.00)。患侧手术前后30°和90°拨号试验提示的胫骨外旋角度差异分别为7.10°、95%CI[6.01°,8.19°]和11.99°、95%CI[10.68°,13.29°],均有显著性差异。患侧与健侧拨号试验提示的胫骨外旋角度差值比较,术前30°和90°分别为8.33°、95%CI[7.32°,9.33°]和13.03°、95%CI[11.82°,14.23°],二者差异均有统计学意义;术后30°和90°分别为0.48°、95%CI[-0.25°,0.98°]和0.34°、95%CI[-0.02°,0.70°],二者差异均无统计学意义。结论:内侧半月板后根部撕裂患者拨号试验提示胫骨外旋增加,pull-out法修复内侧半月板后根能够恢复这种病理性胫骨外旋。30°和90°拨号试验所示的胫骨外旋角度增加可以提示内侧半月板后根部撕裂。因此,在内侧半月板后根部撕裂时,应谨慎解释拨号试验的结果。Objective To evaluate the effect of medial meniscal posterior root tear(MMPRT)on tibial external rotation through the dial test and assess the effect of pull-out repair for MMPRT on pathological tibial rotation.Methods Totally 40 patients undergoing MMPRT repair using pull-out way between January 2022 and January 2023 were studied retrospectively.The dial test at 30°/90°knee flexion was performed on the affected and healthy sides of the patients before and after surgery to assess the tibial external rotation.Results The mean age of the 40 patients was 56.4±7.5 years,with a mean body mass index(BMI)of 24.1±3.0.Among them,6 were male(34%)and 34 were female(85%).The median time from injury to surgery was 3.8±2.9 months.The preoperative tibial external rotation angles measured by the dial test at 30°and 90°knee flexion were 31.34±5.38°and 36.75°±6.62°respectively.Postoperatively,these angles decreased significantly to 24.24°±5.88°and 24.76°±5.47°,respectively(P=0.00).Moreover,significant differences were observed in the changes in tibial external rotation angles of the affected knee before and after surgery,7.10°(95%CI[6.01°,8.19°])at30°flexion and 11.99°(95%CI[10.68°,13.29°])at 90°flexion.The gap in the tibial external rotation angle between the affected and unaffected sides were significant before surgery at 30°(8.33°,95%CI[7.32°,9.33°])and 90°(13.03°,95%CI[11.82°,14.23°])flexion but not after surgery at 30°(0.48°,95%CI[-0.25°,0.98°])and 90°(0.34°,95%CI[-0.02°,0.70°])flexion.Conclusion The dial test finds increased tibial external rotation in patients with MMPRT,and pull-out repair can correct this pathological tibial external rotation.Moreover,an increased tibial external rotation angle measured by the dial test at 30°and 90°can indicate MMPRT.Therefore,special attention should be given to interpreting the results of the dial test in cases of MMPRT.

关 键 词：内侧半月板后根部撕裂 拨号试验 胫骨外旋 

分 类 号：R684[医药卫生—骨科学]