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The effects of joint angle and reliability on knee proprioception
D M Pincivero1, B Bachmeier, A J Coelho
1Department of Physical Therapy, Human Performance and Fatigue Laboratory, Eastern Washington University, Cheney, WA, USA. danny.pincivero@utoledo.ca
Medicine and Science in Sports and Exercise
|October 3, 2001
Summary
Knee joint angle significantly affects proprioception. Less movement is detected at more extended positions, but the subsequent response is greater, impacting passive knee movement perception.
Area of Science:
- Biomechanics
- Neuroscience
- Kinesiology
Background:
- Proprioception, the sense of body position and movement, is crucial for motor control.
- Understanding how joint angles influence proprioceptive feedback is essential for rehabilitation and performance.
Purpose of the Study:
- To investigate the reliability of a new proprioception test.
- To determine the effect of knee joint angle on the detection and response to passive knee movement.
Main Methods:
- A novel perturbation test was used to assess proprioception in 20 males and 20 females.
- Knee angles of 15, 30, and 60 degrees of flexion were tested.
- An electrogoniometer measured knee displacement during detection and response phases.
Main Results:
- A significant interaction between knee angle and proprioception phase was observed.
- At 15 degrees of knee flexion, detection of passive movement required less displacement, but the response was greater compared to 30 and 60 degrees.
- No significant gender effect was found.
Conclusions:
- Knee joint angle influences the detection and voluntary response to passive knee movement.
- The findings suggest that current proprioception assessment methods may need refinement for improved reliability.