Abstract：
BACKGROUND: Only a few studies have assessed signal intensity after pullout repair for medial meniscus posterior root (MMPR) tears (MMPRTs) based on mid-term magnetic resonance imaging (MRI) evaluations. Therefore, this study aimed to assess the quantitative signal intensity of repaired posterior roots over time, up to 3 years postoperatively, and the related factors.
METHODS: This study included 36 patients who underwent pullout repair for MMPRTs and MRI examinations using the same MRI system. The signal intensity of the repaired posterior roots was quantitatively evaluated using the signal-to-noise quotient (SNQ). Medial meniscus extrusion (MME), the SNQ for MMPR, and clinical scores were assessed over 3 years postoperatively.
RESULTS: MME progressed over time until 3 years postoperatively, and its progression during this period was 1.61 ± 1.44 mm. The SNQ for MMPR decreased over time until 3 years postoperatively, and the change in the SNQ from 3 months to 3 years postoperatively (ΔSNQ) was 2.69 ± 1.69. All clinical scores significantly improved (p < 0.001). ΔSNQ was significantly correlated with body weight (correlation coefficient = -0.424, p = 0.010) and body mass index (correlation coefficient = -0.330, p = 0.050). However, ΔSNQ was not significantly correlated with preoperative or postoperative clinical scores.
CONCLUSIONS: After pullout repair for MMPRTs, MME progressed to 3 years postoperatively. However, the signal intensity of the repaired posterior roots decreased, and clinical scores improved over time until 3 years postoperatively. Patient weight and body mass index were significantly correlated with the reduced signal intensity of the repaired posterior roots, suggesting that weight assessment in patients with MMPRTs is crucial.
METHODS: IV.
METHODS: This study included 36 patients who underwent pullout repair for MMPRTs and MRI examinations using the same MRI system. The signal intensity of the repaired posterior roots was quantitatively evaluated using the signal-to-noise quotient (SNQ). Medial meniscus extrusion (MME), the SNQ for MMPR, and clinical scores were assessed over 3 years postoperatively.
RESULTS: MME progressed over time until 3 years postoperatively, and its progression during this period was 1.61 ± 1.44 mm. The SNQ for MMPR decreased over time until 3 years postoperatively, and the change in the SNQ from 3 months to 3 years postoperatively (ΔSNQ) was 2.69 ± 1.69. All clinical scores significantly improved (p < 0.001). ΔSNQ was significantly correlated with body weight (correlation coefficient = -0.424, p = 0.010) and body mass index (correlation coefficient = -0.330, p = 0.050). However, ΔSNQ was not significantly correlated with preoperative or postoperative clinical scores.
CONCLUSIONS: After pullout repair for MMPRTs, MME progressed to 3 years postoperatively. However, the signal intensity of the repaired posterior roots decreased, and clinical scores improved over time until 3 years postoperatively. Patient weight and body mass index were significantly correlated with the reduced signal intensity of the repaired posterior roots, suggesting that weight assessment in patients with MMPRTs is crucial.
METHODS: IV.
摘要：
背景：只有少数研究基于中期磁共振成像（MRI）评估评估了拔出修复内侧半月板后根（MMPR）撕裂（MMPRTs）后的信号强度。因此,这项研究旨在评估修复后根随时间的定量信号强度，术后3年，以及相关因素。
方法：本研究包括36例患者，这些患者使用相同的MRI系统进行MMPRTs和MRI检查。使用信噪比（SNQ）定量评估修复后根的信号强度。弯月面内侧挤压(MME),MMPR的SNQ，术后3年评估临床评分。
结果：MME随着时间的推移进展到术后3年，在此期间的进展为1.61±1.44毫米。MMPR的SNQ随着时间的推移而下降，直到术后3年，术后3个月至3年的SNQ变化（ΔSNQ）为2.69±1.69。所有临床评分均显著提高(p<0.001)。ΔSNQ与体重（相关系数=-0.424，p=0.010）和体重指数（相关系数=-0.330，p=0.050）显着相关。然而,ΔSNQ与术前或术后临床评分无显着相关。
结论：MMPRTs拔除修复后，MME进展至术后3年。然而,修复后根的信号强度下降，临床评分随着时间的推移而改善，直到术后3年。患者体重和体重指数与修复后根的信号强度降低显著相关，提示MMPRTs患者的体重评估至关重要。
方法：IV.
方法：本研究包括36例患者，这些患者使用相同的MRI系统进行MMPRTs和MRI检查。使用信噪比（SNQ）定量评估修复后根的信号强度。弯月面内侧挤压(MME),MMPR的SNQ，术后3年评估临床评分。
结果：MME随着时间的推移进展到术后3年，在此期间的进展为1.61±1.44毫米。MMPR的SNQ随着时间的推移而下降，直到术后3年，术后3个月至3年的SNQ变化（ΔSNQ）为2.69±1.69。所有临床评分均显著提高(p<0.001)。ΔSNQ与体重（相关系数=-0.424，p=0.010）和体重指数（相关系数=-0.330，p=0.050）显着相关。然而,ΔSNQ与术前或术后临床评分无显着相关。
结论：MMPRTs拔除修复后，MME进展至术后3年。然而,修复后根的信号强度下降，临床评分随着时间的推移而改善，直到术后3年。患者体重和体重指数与修复后根的信号强度降低显著相关，提示MMPRTs患者的体重评估至关重要。
方法：IV.
