Time-course changes in active stiffness of the supraspinatus muscle after arthroscopic rotator cuff repair
Time-course changes in active stiffness of the supraspinatus muscle after arthroscopic rotator cuff repair
复制标题
关节镜下肩袖修复后冈上肌主动僵硬度的时程变化
DOI：
10.1007/s10396-021-01168-1
复制
发表时间：
2022
期刊：
影响因子：
1.8
通讯作者：
Okamura K
中科院分区：
文献类型：
--
作者：
Sakaki Y;Taniguchi K;Sato F;Oikawa N;Katayose M;Kura H;Okamura K
PurposeThis study aims to investigate the time-course changes in the active stiffness of the upspinatus muscle after arthroscopic rotator cuff repair.MethodsEight male patients（mean age 61.5 ± 9.4 years）who experienced arthroscopic rotator cuff repair for small to medium tears were recruited for this study.运动任务包括30°肩等长外展和肩胛平面内肩外展的最大自主等长收缩。使用超声剪切波弹性成像记录双侧肩部冈上肌（前浅、前深、后浅和后深区域）、上斜方肌和中三角肌的僵硬度。结果术后12个月患侧冈上肌前浅区的僵硬度明显高于术前和术后3个月（p< 0.05）;术后6个月显著高于术后3个月（p< 0.05）。此外，术后12个月最大自主等长收缩与术前和术后3个月相比显著改善（p< 0.05）。术后12个月，患侧上肢和中三角肌的僵硬度较术前显著降低（p< 0.05）。结论术后12个月，患侧上肢和中三角肌的最大自主等长收缩可能与前浅区主动僵硬度的改善有关。由于肌肉力量、结构修复肌腱强度和重塑的不同阶段，术后6个月而不是3个月，前浅区的主动僵硬度可能会改善。
PurposeThis study aimed to investigate the time-course changes in the active stiffness of the supraspinatus muscle after arthroscopic rotator cuff repair.MethodsEight male patients (mean age 61.5 ± 9.4 years) who underwent arthroscopic rotator cuff repair for small to medium tears were recruited for this study. Movement tasks included 30° shoulder isometric abduction and maximal voluntary isometric contraction of shoulder abduction in the scapular plane. The stiffness of the supraspinatus (anterior superficial, anterior deep, posterior superficial, and posterior deep regions), upper trapezius, and middle deltoid muscles in bilateral shoulders was recorded using ultrasound shear wave elastography. For each subject, the measurement was performed preoperatively and 3, 6, and 12 months postoperatively.ResultsThe stiffness of the affected anterior superficial region of the supraspinatus muscle 12 months postoperatively was significantly higher than that measured preoperatively and 3 months postoperatively (p< 0.05); it was significantly higher at 6 months postoperatively than at 3 months postoperatively (p< 0.05). Further, the maximal voluntary isometric contraction had significantly improved 12 months postoperatively compared to that measured preoperatively and 3 months postoperatively (p< 0.05). The stiffness of the affected upper trapezius and middle deltoid muscles 12 months postoperatively was significantly lower than that preoperatively (p< 0.05).ConclusionThe maximal voluntary isometric contraction 12 months postoperatively possibly increased because of improvement in the active stiffness of the anterior superficial region. Active stiffness of the anterior superficial region may improve 6 months rather than 3 months postoperatively because of the different stages of muscle force, structural repair tendon strength, and remodeling.