Biomechanical interaction between the transverse carpal ligament and the thenar muscles
Biomechanical interaction between the transverse carpal ligament and the thenar muscles
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DOI：
10.1152/japplphysiol.01273.2012
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发表时间：
2013-01-01
影响因子：
3.3
通讯作者：
Li, Zong-Ming
中科院分区：
文献类型：
--
作者：
Shen, Zhilei Liu;Li, Zong-Ming
腕横韧带与鱼际肌肉间的生物力学相互作用。中国生物医学工程学报，2014,31(2):444 - 444。2012年12月6日首次发表；doi: 10.1152 / japplphysiol.01273.2012。腕横韧带（TCL）作为大鱼际肌肉的起源，在解剖学和生物力学上是大鱼际肌肉收缩的组成部分。在腕管综合征患者中观察到TCL肥大，这可能是由手部重复使用引起的。本研究的目的是研究TCL和大鱼际肌肉之间的生物力学相互作用。具体来说，在拇指和食指之间的等距捏尖时，检查了由TCL形成的腕弓在大鱼际肌肉收缩时的形态学变化。从13名健康受试者中记录了腕管的超声视频，并与捏力计测量的力同步。通过模式匹配程序跟踪大鱼际肌肉的尺骨点、斜方肌和钩状肌。按压力对腕弓高度、宽度和面积有显著影响（P < 0.005）。当夹紧力从0增大到100%最大自主收缩力时，腕弓高度从1.8 +/- 1.0增大到2.3 +/- 1.3 mm，腕弓宽度从23.9 +/- 2.4减小到23.1 +/- 2.4 mm，腕弓面积从22.2 +/- 13.6增大到27.3 +/- 16.3 mm(2)。在大鱼际肌肉收缩时掌侧牵拉TCL，为韧带和肌肉之间的生物力学相互作用提供了证据。大鱼际肌收缩对TCL的重复性生物力学刺激可导致组织重塑，进而导致TCL肥大。这项研究揭示了TCL肥大的潜在原因，这可能是腕管综合征的病因之一。
Biomechanical interaction between the transverse carpal ligament and the thenar muscles. J Appl Physiol 114: 225-229, 2013. First published December 6, 2012; doi:10.1152/japplphysiol.01273.2012.-The transverse carpal ligament (TCL) serves as the origin of the thenar muscles and is integral to thenar muscle contraction anatomically and biomechanically. TCL hypertrophy has been observed in patients with carpal tunnel syndrome and is potentially caused by repetitive hand use. The purpose of this study was to investigate the biomechanical interaction between the TCL and the thenar muscles. Specifically, the morphological changes of the carpal arch, formed by the TCL, in response to thenar muscle contractions were examined during isometric tip pinch between the thumb and index finger. Ultrasound videos of the carpal tunnel were recorded from 13 healthy subjects and were synchronized with the forces measured by a pinch dynamometer. The thenar muscles' ulnar point, trapezium, and hamate were tracked by a pattern-matching program. The pinch force significantly affected the carpal arch height, width, and area (P < 0.005). As the pinch force increased from 0 to 100% maximum voluntary contraction force, the carpal arch height increased from 1.8 +/- 1.0 to 2.3 +/- 1.3 mm, the carpal arch width decreased from 23.9 +/- 2.4 to 23.1 +/- 2.4 mm, and the carpal arch area increased from 22.2 +/- 13.6 to 27.3 +/- 16.3 mm(2). The TCL was pulled volarly during thenar muscle contractions, providing evidence for the biomechanical interaction between the ligament and muscles. Repetitive biomechanical stimulation on the TCL from thenar muscle contractions could lead to tissue remodeling and then TCL hypertrophy. This study sheds light on the potential cause of TCL hypertrophy, which may be an etiological factor for carpal tunnel syndrome.