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The Validation of Musculoskeletal Model During Isokinetic Exercise at Knee Joint: An Experimental and Simulation Study / 대한정형외과연구학회지
Journal of Korean Orthopaedic Research Society ; : 186-195, 2003.
Article in Korean | WPRIM | ID: wpr-24983
ABSTRACT

PURPOSE:

This study validated the musculoskeletal model of the human lower extremity by comparative study between calculated muscle parameters through simulation using modified hill-type model and measured muscle parameters through isokinetic exercise. The relationship between muscle forces and moments participated in motion was quantified from the results of simulation. MATERIALS AND

METHODS:

For simulation of isokinetic motion, a three-dimensional anatomical knee model was constructed using gait analysis. The EMG-force model was used to determine muscle activation level exciting muscles. The modified Hill-type model was used to calculate individual muscle force and moment in dynamic analysis. This method was validated by comparing analytical data with experimental data.

RESULTS:

The results showed that there was a significant correlation between calculated torques from simulation and measured torque from isokinetic motion experiments (R=0.97). We also found that muscle forces and moments during knee flexion and extension have nonlinearly proportional or inversely proportional relationship, since lower extremity muscles were simultaneously involved in flexion/extension motion and inner/outer rotation.

CONCLUSION:

We concluded that the simulation by using musculoskeletal model may be a useful mean to predict and recover musculoskeletal-related diseases, and analyze complicated experiment such as clash condition.
Subject(s)

Full text: Available Index: WPRIM (Western Pacific) Main subject: Torque / Lower Extremity / Gait / Knee / Knee Joint / Muscles Type of study: Prognostic study Limits: Humans Language: Korean Journal: Journal of Korean Orthopaedic Research Society Year: 2003 Type: Article

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Full text: Available Index: WPRIM (Western Pacific) Main subject: Torque / Lower Extremity / Gait / Knee / Knee Joint / Muscles Type of study: Prognostic study Limits: Humans Language: Korean Journal: Journal of Korean Orthopaedic Research Society Year: 2003 Type: Article