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Biomechanics of tendon transfers
1Rehabilitation Branch, Gillis W. Long Hansen's Disease Center, Carville, Louisiana.
Hand Clinics
|May 1, 1988
Summary
Muscle mechanical properties are defined by tension generation and excursion distance. While exercise can enhance muscle tension, excursion is difficult to improve without surgery, highlighting biomechanical limitations in joint control.
Area of Science:
- Biomechanics
- Musculoskeletal system
- Surgical anatomy
Background:
- Muscle function is determined by two primary mechanical variables: tension generation potential and excursion distance.
- Enhancing muscle tension is achievable through exercise, but increasing excursion potential is surgically complex and carries risks.
Purpose of the Study:
- To elucidate the fundamental mechanical properties of skeletal muscles.
- To explore the limitations and surgical considerations for modifying muscle excursion.
- To discuss strategies for managing multi-joint muscle control and torque limitations.
Main Methods:
- Review of biomechanical principles governing muscle function.
- Analysis of surgical techniques for altering muscle length and tension.
- Examination of joint kinematics and muscle torque dynamics.
Main Results:
- Muscle tension capacity is adaptable via exercise.
- Muscle excursion potential is largely fixed, with surgical alteration posing risks like avulsion.
- Single muscles controlling multiple joints cannot independently modulate torque at each joint.
Conclusions:
- Strategies for optimizing joint function involve understanding inherent muscle properties.
- Surgical interventions for muscle excursion are high-risk and may necessitate joint fusion or passive supports.
- Effective management of complex movements requires consideration of muscle torque limitations and multi-joint interactions.