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Multi-joint Assessment of Proprioception Impairments Poststroke.

Dali Xu¹, Sang Hoon Kang², Song Joo Lee³

¹Department of Physical Therapy and Rehabilitation Science, University of Maryland, Baltimore, MD.

Archives of Physical Medicine and Rehabilitation

|September 15, 2023

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This summary is machine-generated.

Stroke survivors show significant proprioception impairment in the shoulder, elbow, and wrist, with the wrist being most affected. This sensory deficit impacts joint position sense and movement direction detection.

Area of Science:

Neuroscience
Rehabilitation Medicine
Biomechanics

Background:

Stroke frequently leads to sensory impairments, affecting motor control and functional recovery.
Proprioception, the sense of joint position and movement, is crucial for effective limb control.
Post-stroke proprioceptive deficits can significantly hinder rehabilitation outcomes.

Purpose of the Study:

To quantify shoulder, elbow, and wrist proprioception impairment in individuals following a stroke.
To compare proprioceptive acuity between stroke survivors and healthy controls.
To identify specific joints or movement directions most affected by proprioceptive loss post-stroke.

Main Methods:

Utilized an exoskeleton robot to assess threshold detection to passive motion at the shoulder, elbow, and wrist joints.

Keywords:

Kinesthesia Proprioceptive acuity Rehabilitation Sensory impairment Stroke

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Evaluated proprioceptive acuity during slow, passive inward and outward movements of individual joints.

Included 17 stroke survivors (stroke duration < 1 year) and 17 healthy controls.

Main Results:

Stroke survivors exhibited significantly impaired proprioceptive acuity at all three joints (shoulder, elbow, wrist) compared to healthy controls (P<.01).
Proprioceptive impairment was evident in both inward and outward joint movements.
The distal wrist joint demonstrated more severe proprioception deficits than the proximal shoulder and elbow joints during inward motion (P<.01).
Stroke survivors had greater errors in identifying joint motion and direction (P<.01).

Conclusions:

Significant proprioceptive sensory impairments exist across the shoulder, elbow, and wrist joints post-stroke, with a notable deficit at the wrist.
These findings highlight the widespread impact of stroke on somatosensory function.
Accurate assessment of multi-joint proprioception deficits is essential for tailoring effective post-stroke rehabilitation strategies.