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Related Concept Videos

Changes in the Appendicular Skeleton with Age01:09

Changes in the Appendicular Skeleton with Age

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Related Experiment Video

Updated: Jul 10, 2026

Measurement of Dynamic Scapular Kinematics Using an Acromion Marker Cluster to Minimize Skin Movement Artifact
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Effects of Changing Hip Position on Scapular Kinematics.

Sarah E Schlittler1, David N Suprak1, Lorrie R Brilla1

  • 1Department of Health and Human Development, Western Washington University, Bellingham, WA, USA.

Journal of Applied Biomechanics
|October 31, 2024
PubMed
Summary

Hip position significantly affects posterior tilt (PT) of the scapula during arm elevation, with standing showing the greatest PT. Other movements showed no significant changes with hip position.

Keywords:
fasciaforceoblique slingpostureshoulder

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Area of Science:

  • Biomechanics
  • Kinesiology
  • Orthopedics

Background:

  • Scapular kinematics are crucial for shoulder function.
  • The influence of hip position on scapular movement is not well understood.
  • Understanding these relationships can inform rehabilitation and performance.

Purpose of the Study:

  • To investigate the impact of different hip positions on scapular kinematics.
  • To quantify changes in scapular upward rotation, posterior tilt (PT), and external rotation during arm elevation.
  • To establish baseline data for healthy scapular movement across various postures.

Main Methods:

  • Twenty-four subjects performed dominant arm elevation to 120° in the scapular plane.
  • Measurements were taken in four randomized conditions: standing, seated, seated with ipsilateral hip flexion, and seated with contralateral hip flexion.
  • Two-way ANOVAs analyzed the effects of shoulder elevation and hip position on scapular kinematics.

Main Results:

  • Posterior tilt (PT) showed significant main effects for both elevation and hip condition (P < .001), with the greatest PT observed in the standing position.
  • Scapular external rotation and upward rotation did not show significant effects related to hip position (P > .390).
  • While PT was affected by hip position, the clinical significance may be limited.

Conclusions:

  • Hip position influences scapular posterior tilt, particularly in the standing posture.
  • Scapular external rotation and upward rotation are not significantly affected by hip position during this specific arm movement.
  • These findings provide baseline data on healthy scapular kinematics concerning hip positioning.