背景:腿筋肌是最常见的肌肉拉伤部位,尤其是在双关节肌\'肌腱交界处附近,肌腱膜提供连接肌纤维和肌腱的结缔组织网络。这项研究旨在研究使用MyotonPRO在不同条件(福尔马林和尿素)下的绳肌腱神经的可靠性和位点特异性差异。
方法:从4具83-93岁的人类尸体(2名男性和2名女性)中解剖了8个腿筋肌肉群。从股二头肌长头的浅表和深层区域测量腱膜的机械性能,半腱肌,和半膜(福尔马林溶液浸泡后)使用MyotonPRO进行(在24小时间隔内检查评估者的可靠性),随后,在尿素溶液浸渍后使用类似的程序测量绳肌腱膜。
结果:测试重测(评分员内部)结果显示,MyotonPRO测量的音调,刚度,放松,尸体无精索的蠕变具有良好的可靠性(ICC:0.86至0.98)。在语气上没有显著差异,刚度,弹性,放松,在福尔马林和尿素条件下,腿筋腱膜的六个位点之间蠕变。福尔马林和尿素条件之间的显着差异在音调中发现,刚度,放松,腿筋腱膜蠕变(P<0.05)。
结论:这些结果表明,使用MyotonPRO,腿筋神经的生物力学特性显示出位点之间的均一性。尿素溶液可能会中和福尔马林对尸体肌肉-肌腱-肌腱单位生物力学特性的影响。目前的发现可能会影响后续尸体研究的设计。
BACKGROUND: Hamstring muscles are the most frequently reported sites of muscle strain injuries, especially near the bi-articular muscles\' myotendinous junction, where aponeurosis provides a connective tissue network linking muscle fibers to the tendon. This study aimed to investigate the reliability and site-specific differences of hamstring aponeuroses under different conditions (formalin and urea) using MyotonPRO.
METHODS: Eight hamstring muscle groups were dissected from four human cadavers (two males and two females) aged 83-93 years. Measurements of the mechanical properties of the aponeuroses from the superficial and deep regions of biceps femoris long head, semitendinosus, and semimembranosus (after formalin solution immersion) were done using MyotonPRO (intra-rater reliability was examined within a 24-h interval), following which the hamstring aponeuroses were measured using a similar procedure after urea solution immersion.
RESULTS: Test-retest (intra-rater) results revealed that the MyotonPRO measurement of tone, stiffness, relaxation, and creep of cadaveric aponeuroses presented good to excellent reliability (ICC: 0.86 to 0.98). There were no significant differences in tone, stiffness, elasticity, relaxation, and creep among the six sites of hamstring aponeuroses under both formalin and urea conditions. Significant differences between formalin and urea conditions were found in the tone, stiffness, relaxation, and creep of hamstring aponeuroses (P < 0.05).
CONCLUSIONS: These results suggested that the biomechanical properties of hamstring aponeuroses showed homogeneity between the sites using MyotonPRO. Urea solution could potentially neutralize the effect of formalin on the biomechanical properties of cadaveric muscle-aponeurosis-tendon units. The present findings might influence the design of subsequent cadaveric studies on hamstring muscle strains.