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Evaluating the Function of the Foot Core System in the Elderly
Published on: March 11, 2022
How do the elderly negotiate a step? A biomechanical assessment.
M G Benedetti1, L Berti, S Maselli
1Movement Analysis Laboratory, Istituti Ortopedici Rizzoli, Via di Barbiano 1/10, 40136 Bologna, Italy. benedetti@ior.it
Clinical Biomechanics (Bristol, Avon)
|March 21, 2007
Summary
Elderly individuals exhibit altered step-climbing biomechanics, including prolonged stance and reduced ankle movement, increasing tripping risk. These findings highlight the need for targeted physical activity to prevent falls in older adults.
Area of Science:
- Gerontology
- Biomechanics
- Motor Control
Background:
- Falls are a major concern for the elderly, with tripping over raised surfaces being a common cause.
- Understanding motor pattern alterations during daily activities like stair negotiation is crucial for fall prevention.
Purpose of the Study:
- To identify specific changes in the motor patterns of elderly individuals during single-step negotiation.
- To investigate the biomechanical factors contributing to tripping and fall risk in the elderly.
Main Methods:
- Kinematic assessment of a single step negotiation task in 32 healthy elderly subjects (mean age 72.4 years) and 18 young controls (mean age 26.5 years).
- Comprehensive geriatric assessment including comorbidity, functional status, and motor function evaluation for the elderly cohort.
Main Results:
- Elderly subjects demonstrated a prolonged double stance phase during step climbing compared to controls.
- Key kinematic differences included greater trunk anterior flexion, increased hip flexion, and reduced ankle dorsiflexion in the elderly.
- Reduced ankle dorsiflexion was identified as a significant factor potentially increasing tripping risk.
Conclusions:
- Biomechanical analysis revealed distinct kinematic abnormalities in the trunk, hip, and ankle during step negotiation in healthy elderly individuals.
- These findings underscore the importance of tailored physical activity programs designed to mitigate tripping and fall risks in the aging population.
