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Effects of speed on forelimb joint angular displacement patterns in vervet monkeys (Cercopithecus aethiops)
1Department of Anatomy, Indiana University School of Medicine, Fort Wayne 46805.
American Journal of Physical Anthropology
|October 1, 1990
Summary
Vervet monkeys exhibit altered shoulder, elbow, and wrist joint movements as speed increases. Gait transitions show decreased elbow range and increased yielding, offering insights into primate locomotion.
Area of Science:
- Primate locomotion biomechanics
- Comparative anatomy and physiology
Background:
- Understanding limb kinematics is crucial for deciphering locomotion.
- Primate forelimb movement patterns offer insights into functional adaptations.
Purpose of the Study:
- Analyze angular displacement patterns of shoulder, elbow, and wrist joints in vervet monkeys.
- Investigate how these patterns change with increasing locomotion speed and across different gaits.
- Compare findings with other mammals like cats and dogs.
Main Methods:
- Kinematic analysis of shoulder, elbow, and wrist joint angular displacement.
- Observation of five vervet monkeys across various speeds and gaits.
- Comparative analysis with existing data for cats and dogs.
Main Results:
- Peak joint positions tended to decrease with increasing speed in symmetrical gaits.
- Elbow joint exhibited decreased range of motion and increased yielding during walk-gallop transition.
- Some peak positions showed a tendency to decrease across symmetrical gaits.
Conclusions:
- Forelimb joint kinematics in vervet monkeys are speed-dependent.
- Gait transitions involve specific adjustments in elbow mechanics.
- Findings contribute to understanding functional and neurological aspects of primate forelimb function.