Lower-Limb Inter-Joint Coordination During Gait in Individuals with Parkinson's Disease: A Vector Coding Analysis

Area of Science:

• Neurology
• Biomechanics
• Movement Science

Background:

• Parkinson's disease (PD) is a neurodegenerative disorder affecting millions globally.
• Gait disturbances are a hallmark of PD, significantly impacting quality of life.
• Understanding inter-joint coordination in PD is vital for developing effective rehabilitation strategies.

Purpose of the Study:

• To compare inter-joint coordination during gait between individuals with Parkinson's disease and healthy controls.
• To identify specific gait cycle phases and planes where coordination differs.
• To provide insights for targeted rehabilitation interventions for PD.

Main Methods:

• A motion capture system recorded gait data from 15 PD patients and 17 healthy controls (aged 50-70).
• Vector coding technique analyzed in-phase, anti-phase, proximal-phase, and distal-phase coordination modes.
• One-way ANOVA examined differences in coordination patterns across sagittal, frontal, and horizontal planes and between feet.

Main Results:

• Significant differences in ankle-hip coordination were found in the sagittal, frontal, and horizontal planes during various gait phases.
• Ankle-knee coordination showed higher coupling angles in controls during specific sagittal and frontal plane phases.
• Knee-hip coordination revealed larger coupling angles in the PD group during sagittal and horizontal plane phases.

Conclusions:

• Individuals with PD demonstrate altered inter-joint coordination, particularly in proximal joints, likely linked to impaired balance.
• Findings highlight the need for rehabilitation strategies focusing on improving proximal joint coordination and gait stability in PD.
• Further clinical research is recommended to optimize rehabilitation protocols for Parkinson's disease.