Assessment of Passive Stiffness of Medial and Lateral Heads of Gastrocnemius Muscle, Achilles Tendon, and Plantar Fascia at Different Ankle and Knee Positions Using the MyotonPRO.
Assessment of Passive Stiffness of Medial and Lateral Heads of Gastrocnemius Muscle, Achilles Tendon, and Plantar Fascia at Different Ankle and Knee Positions Using the MyotonPRO.
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DOI：
10.12659/msm.909550
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发表时间：
2018-10-23
期刊：
影响因子：
--
通讯作者：
Liu C
中科院分区：
文献类型：
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作者：
Huang J;Qin K;Tang C;Zhu Y;Klein CS;Zhang Z;Liu C
本研究的目的是评估被动刚度的内侧和外侧腓肠肌（MG和LG），跟腱（AT），足底筋膜（PF）在不同的踝关节和膝关节的位置。使用便携式手持设备（MyotonPRO）评估刚度。在30名健康受试者（15名男性，15名女性）中，膝关节完全伸展或屈曲90°，通过被动关节旋转测量踝关节跖屈50°、0°（中立位）和背屈25°（不用于AT）时MG、LG、AT和PF的刚度。当膝关节完全伸直时，被动背屈导致肌肉刚度显著增加（P<0.001），而无论膝关节位置如何，被动踝关节背屈都会增加AT和PF刚度（P<0.001）。MG与LG相比（P<0.001），AT 3 cm部位与6 cm部位相比（P<0.05），观察到刚度增加。在跖屈-50 °时，LG组的刚度大于MG组（P<0.001），在背屈25°时，MG组的刚度大于LG组（P<0.05）。AT刚度从远侧到近侧增加：0 cm > 3cm> 6cm（P<0.001）。使用MyotonPRO评估的刚度与使用其他技术评估的刚度相似，表明MyotonPRO能够检测不同踝关节和膝关节位置的MG、LG、AT和PF刚度变化。
The aim of this study was to assess the passive stiffness of the medial and lateral gastrocnemius (MG and LG), Achilles tendon (AT), and plantar fascia (PF) at different ankle and knee positions. Stiffness was assessed using a portable hand-held device (MyotonPRO). In 30 healthy participants (15 males, 15 females) with the knee fully extended or flexed 90°, stiffness of the MG, LG, AT, and PF was measured at 50° plantar flexion, 0° (neutral position), and 25° dorsiflexion (not for AT) of the ankle joint by passive joint rotation. With the knee fully extended, passive dorsiflexion caused significant increase in muscle stiffness (P<0.001), whereas AT and PF stiffness increased with passive ankle dorsiflexion regardless of knee position (P<0.001). Increased stiffness was observed in MG compared to LG (P<0.001) and at the 3-cm site of AT compared to the 6-cm site (P<0.05). Stiffness was greater in LG compared to MG at −50° plantar flexion (P<0.001) and was greater in MG compared to LG at 25° dorsiflexion (P<0.05). Stiffness of AT increased in a distal-to-proximal pattern: 0 cm >3 cm >6 cm (P<0.001). Stiffness assessed by use of the MyotonPRO was similar assessments using other techniques, suggesting that the MyotonPRO is capable of detecting the variations in stiffness of MG, LG, AT, and PF at different ankle and knee positions.