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Related Concept Videos

Ankle Joint01:10

Ankle Joint

The ankle is formed by the talocrural joint (crural = leg). It consists of the articulations between the talus bone of the foot and the distal ends of the tibia and fibula of the leg. The superior aspect of the talus bone is square-shaped and has three areas of articulation. The top of the talus articulates with the inferior tibia. This is the portion of the ankle joint that carries the body weight between the leg and foot. The sides of the talus are firmly held in position by the articulations...
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During the postoperative period, it is crucial to focus on maintaining circulation, identifying and managing potential complications, and planning for discharge.Nursing AssessmentVital signs monitoring: Regularly monitor vital signs, including blood pressure, heart rate, respiratory rate, and temperature, to detect early signs of complications such as bleeding and infection.Circulation assessment: Monitor pulses, perform Doppler assessments, and check capillary refill, color, temperature, and...

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Lower-limb inter-joint coordination during balance recovery after trips.

Xingda Qu1, Lin Ma1, Di Cheng1

  • 1Institute of Human Factors and Ergonomics, Shenzhen University, China.

Gait & Posture
|October 1, 2024
PubMed
Summary

Successful balance recovery after trips relies on coordinated movements of the swing limb's distal joints. Enhancing in-phase coordination and reducing variability in these joints may prevent trip-induced falls.

Keywords:
Accidental fallsExternal perturbationsFall preventionLoss of balancePostural control

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Area of Science:

  • Biomechanics
  • Human Movement Science
  • Neuroscience

Background:

  • Trips are a common cause of accidental falls.
  • Understanding postural control during balance recovery is key to preventing falls.
  • Investigating biomechanical factors can reveal causes of trip-induced falls.

Purpose of the Study:

  • To examine lower-limb inter-joint coordination during balance recovery after trips.
  • To identify kinematic strategies for successful balance recovery.

Main Methods:

  • 123 volunteers were unexpectedly tripped while walking.
  • Lower-limb inter-joint coordination was quantified using continuous relative phase measures (MARP and DP).
  • Coordination was analyzed during the first recovery step post-trip.

Main Results:

  • Successful balance recovery showed smaller MARP (mean of the absolute relative phases) and DP (deviation phase) in knee-ankle coordination on the swing side.
  • Stance limb inter-joint coordination did not differ significantly between successful and unsuccessful recovery.
  • Distal joint control of the swing limb is critical for regaining balance.

Conclusions:

  • Greater in-phase coordination and reduced variability in swing limb distal joints are potential targets for fall prevention interventions.
  • Focusing on swing limb distal joint control can help prevent trip-induced falls.