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Related Concept Videos

Knee Joint01:23

Knee Joint

The knee joint is the most complicated joint in the body. It consists of three articulations– two tibiofemoral and one patellofemoral. As is characteristic of synovial joints, the knee joint has a thin articular capsule that partially surrounds this joint cavity. Additionally, several ligaments, muscles, and cartilaginous structures support the movement of the knee.
A total of seven ligaments support the knee joint. The patellar ligament, which is also attached to the quadriceps femoris group...
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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Related Experiment Video

Updated: May 20, 2026

In Vivo Quantification of Hip Arthrokinematics during Dynamic Weight-bearing Activities using Dual Fluoroscopy
07:43

In Vivo Quantification of Hip Arthrokinematics during Dynamic Weight-bearing Activities using Dual Fluoroscopy

Published on: July 2, 2021

Assessing inter-joint coordination during gait in hip osteoarthritis.

Ryuya Yamakawa1, Yusuke Sakaue2, Shima Okada3

  • 1Graduate School of Sports and Health Science, Ritsumeikan University, Shiga 525-8577, Japan; Sports Medical Center, Hiroshima University Hospital, Hiroshima 734-8551, Japan.

Gait & Posture
|May 18, 2026
PubMed
Summary

Patients with hip osteoarthritis (HOA) alter joint coordination to control their center of mass (CoM) during gait. While specific movement variances increase, the overall synergy for CoM control remains consistent, suggesting adapted motor strategies.

Keywords:
Center of massGaitHip osteoarthritisUncontrolled manifold

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Clinical Assessment of Spatiotemporal Gait Parameters in Patients and Older Adults
08:56

Clinical Assessment of Spatiotemporal Gait Parameters in Patients and Older Adults

Published on: November 7, 2014

Related Experiment Videos

Last Updated: May 20, 2026

In Vivo Quantification of Hip Arthrokinematics during Dynamic Weight-bearing Activities using Dual Fluoroscopy
07:43

In Vivo Quantification of Hip Arthrokinematics during Dynamic Weight-bearing Activities using Dual Fluoroscopy

Published on: July 2, 2021

Clinical Assessment of Spatiotemporal Gait Parameters in Patients and Older Adults
08:56

Clinical Assessment of Spatiotemporal Gait Parameters in Patients and Older Adults

Published on: November 7, 2014

Area of Science:

  • Biomechanics
  • Motor Control
  • Orthopedics

Background:

  • Hip osteoarthritis (HOA) causes compensatory gait changes like trunk bending.
  • Assessing multi-joint coordination is crucial for understanding HOA and rehabilitation.
  • Traditional methods inadequately evaluate joint coordination in HOA.

Purpose of the Study:

  • To investigate inter-joint coordination differences in hip osteoarthritis (HOA) patients during gait.
  • To utilize Uncontrolled Manifold (UCM) analysis for assessing frontal-plane center of mass (CoM) control in HOA.
  • To compare motor control strategies between HOA patients and asymptomatic individuals.

Main Methods:

  • Data from 80 asymptomatic individuals and 106 HOA patients were analyzed.
  • Uncontrolled Manifold (UCM) analysis was applied using segment angles and frontal-plane CoM.
  • Variances VUCM, VORT, and synergy index ΔVZ were calculated and compared between groups.

Main Results:

  • HOA patients exhibited significantly higher VUCM and VORT compared to controls (p < 0.05).
  • No significant difference was found in the synergy index ΔVZ between the groups (p > 0.05).

Conclusions:

  • HOA patients maintain consistent CoM control synergy (ΔVZ) despite increased movement variances (VUCM, VORT).
  • This suggests altered, but coordinated, multi-joint strategies are employed to manage hip dysfunction.
  • Findings inform rehabilitation by highlighting motor control adaptations in HOA.