Finger joint motion generated by individual extrinsic muscles: a cadaveric study.
Finger joint motion generated by individual extrinsic muscles: a cadaveric study.
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手指关节运动由单个外部肌肉产生：一项尸体研究。
DOI：
10.1186/1749-799x-3-27
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发表时间：
2008-07-11
影响因子：
2.6
通讯作者：
Li, Zong-Ming
中科院分区：
文献类型：
--
作者：
Nimbarte, Ashish D;Kaz, Rodrigo;Li, Zong-Ming
我们对与特定肌肉相关的手指功能的理解主要基于功能解剖学，并且与单个肌肉相关的确切运动效果仍然未知。本研究的目的是检查每个外在肌肉产生的食指指骨关节运动。对 10 只（6 名女性和 4 名男性）新鲜冷冻的尸体手（年龄 55.2 ± 5.6 岁）进行最小程度的解剖，以在食指外肌的肌肉腱连接处建立棒球缝合线。每根肌腱加载至其潜在力的 10%，并使用基于标记的运动捕捉系统同时记录掌指 (MCP)、近端指间 (PIP) 和远端指间 (DIP) 关节产生的运动。指深屈肌 (FDP) 在 MCP、PIP 和 DIP 关节处分别产生 19.7、41.8 和 29.4 度的平均屈曲。指浅屈肌 (FDS) 在 MCP 关节和 PIP 关节处分别产生 24.8 度和 47.9 度的平均屈曲，而在 DIP 关节处没有运动。指总伸肌 (EDC) 和固有伸肌 (EIP) 在 MCP、PIP 和 DIP 关节处分别产生 18.3、15.2、4.0 度和 15.4、13.2、3.7 度的平均伸展。 FDP 在 PIP 和 DIP 关节处产生同步运动。然而，MCP 关节处的 FDP 和 FDS 生成的运动滞后于 PIP 关节处生成的运动。 EDC 和 EIP 在 MCP 和 PIP 关节处产生同步运动。这项研究的结果为个体外在肌肉的运动学作用提供了新的见解。
Our understanding of finger functionality associated with the specific muscle is mostly based on the functional anatomy, and the exact motion effect associated with an individual muscle is still unknown. The purpose of this study was to examine phalangeal joints motion of the index finger generated by each extrinsic muscle. Ten (6 female and 4 male) fresh-frozen cadaveric hands (age 55.2 ± 5.6 years) were minimally dissected to establish baseball sutures at the musculotendinous junctions of the index finger extrinsic muscles. Each tendon was loaded to 10% of its force potential and the motion generated at the metacarpophalangeal (MCP), proximal interphalangeal (PIP), and distal interphalangeal (DIP) joints was simultaneously recorded using a marker-based motion capture system. The flexor digitorum profundus (FDP) generated average flexion of 19.7, 41.8, and 29.4 degrees at the MCP, PIP, and DIP joints, respectively. The flexor digitorum superficialis (FDS) generated average flexion of 24.8 and 47.9 degrees at the MCP and PIP joints, respectively, and no motion at the DIP joints. The extensor digitorum communis (EDC) and extensor indicis proprius (EIP) generated average extension of 18.3, 15.2, 4.0 degrees and 15.4, 13.2, 3.7 degrees at the MCP, PIP and DIP joints, respectively. The FDP generated simultaneous motion at the PIP and DIP joints. However, the motion generated by the FDP and FDS, at the MCP joint lagged the motion generated at the PIP joint. The EDC and EIP generated simultaneous motion at the MCP and PIP joints. The results of this study provide novel insights into the kinematic role of individual extrinsic muscles.