Dynamical chanracteristics of index finger in response to cold water stimulation: Analysis based on Anybody platform

doi:10.3969/j.issn.2095-4344.2013.22.015

Abstract

Abstract:

BACKGROUND: Anybody human modeling and simulation system is a computer-aided ergonomics and biomechanical analysis software, and it is the only software that can analyze the musculoskeletal system completely which can be used to calculate the force deformation of bone, muscle and joint.
OBJECTIVE: To investigate the index finger dexterity after cold water stimulation using computing model.
METHODS: Based on the available data of the experiment about the index finger movement, the kinematic parameters of index finger in the movement were achieved. Subsequently, a clench fist kinematic model of hand was established with Anybody platform, and then a musculoskeletal model consisting of the extrinsic flexor muscles (flexor digitorum profundus and flexor digitorum superficialis) was developed to describe the changes of muscle force and contraction power in clench fist movement before and after cold simulation through inverse dynamics analysis.
RESULTS AND CONCLUSION: After the cold water stimulation, the average angular velocities of the three joints of index finger were decreased during the flexing movement compared to those before cold water stimulation, and the muscle force of flexor digitorum superficialis was increased significantly in the flexing process. The contract power of flexor digitorum profundus decreased obviously, whereas the contract power of flexor digitorum superficialis was decreased slightly. The results indicate that the finger movement takes more time and the muscle force of flexor digitorum superficialis is more sensitive to the cold stimulation, which further indicates the importance of flexor digitorum superficialis in clench fist movement.

Key words: bone and joint implants, bone and joint biomechanics, Anybody platform, index finger, kinematics, dynamics, cold water stimulation, muscle force, flexor digitorum profundus, flexor digitorum superficialis, distal interphalangeal joint, proximal interphalangeal joint, other grants-supported paper

CLC Number:

R318

Yin Chuan-sheng, Sun Fang, He Ying, Shao Hong-wei. Dynamical chanracteristics of index finger in response to cold water stimulation: Analysis based on Anybody platform[J]. Chinese Journal of Tissue Engineering Research, 2013, 17(22): 4091-4098.

Figures/Tables 4

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