In vivo measures of rotator cuff muscle dynamics

所要求的设备用于肩部复杂模型的体内验证，以确定肩部矫形器中遮蔽臂的位置，以加快肩袖手术后的康复。需要三个测量装置。一个16通道细线肌内肌电图（EMG）系统将用于监测肩手术期间肩袖肌肉的激活。在撕裂修复手术中，体内肌肉应力/应变传感器（关节镜下可插入力探针，AIFP和差分可变磁阻传感器，DVRT）将附着在肌肉肌腱上。这些设备将由5名全职教授使用，他们目前在仿真和运动建模实验室指导15名学生和助理。目前，只有间接的测量方法可用于验证肩部复杂肌肉的激活，因为旋转袖肌的力量是深层肌肉，大多数损伤发生的地方都无法估计。细线肌电图和微型AIFP-DVRT传感器将实现直接应力/应变测量。这一信息对于验证肩部复杂模型至关重要，同时也为受伤肌肉提供了独特的力量数据。它还将结合实时运动学分析为骨科医生提供现场信息。这可以通过肩部/手臂支撑在手术中和术后进行更好的治疗。

The equipment requested is to be used in the in-vivo validation of shoulder complex model in determining the sheltered arm position in a shoulder orthosis to speed up rehabilitation after rotator cuff surgery. Three measuring devices are requested. A 16 channel fine wire intra-muscular electromyography (EMG) system will be used to monitored rotator cuff muscle activations during shoulder surgery. The in-vivo muscle stress/strain sensors (Arthroscopically Insertable Force Probes, AIFP and the Differential Variable Reluctance Transducers, DVRT) will be attached to the muscle tendon during tear repair surgery. These equipments will be used by 5 full-time professors who presently supervise 15 students and assistants in the Simulation and Movement Modeling laboratory. Presently only indirect measures are available to validate the shoulder complex muscle activations since none of the rotator cuff muscles forces which are deep muscles and where most of the injuries take place can be estimated. The fine wire EMG and the miniature AIFP-DVRT sensors will enable direct stress/strain measurements. This information will be crucial to validate the shoulder complex model but also provide unique force data on injured muscles. It will also supply in-situ information to the orthopedic surgeons in combination with a real time kinematical analysis. This could lead to better treatment both surgically and post-operatively through shoulder/arm bracing.