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Updated: Jun 24, 2026
10:07
Measurement of Dynamic Scapular Kinematics Using an Acromion Marker Cluster to Minimize Skin Movement Artifact
Published on: February 10, 2015
Restricted scapular mobility during arm abduction: implications for impingement syndrome
Hakan Atalar1, Cengiz Yilmaz, Onur Polat
1Department of Orthopaedic Surgery, Fatih University Medical School, Ankara, Turkey.
Acta Orthopaedica Belgica
|April 11, 2009
Summary
Restricted scapular mobility during arm abduction significantly reduces acromiohumeral distance. This finding suggests a functional component may contribute to shoulder impingement syndrome.
Area of Science:
- Orthopedics
- Biomechanics
- Sports Medicine
Background:
- Scapular mobility is crucial for normal shoulder function.
- Altered scapular movement is implicated in shoulder impingement syndrome.
Purpose of the Study:
- To investigate the effect of restricted scapular mobility on acromiohumeral and coracohumeral distances during arm abduction.
- To explore the potential functional contribution to impingement syndrome.
Main Methods:
- Healthy male volunteers (n=10) underwent multislice computed tomography scans.
- Measurements were taken with the humerus at 60, 90, and 120 degrees of abduction in the scapular plane.
- Scapular mobility was restricted using a custom-made brace, and measurements were repeated.
Main Results:
- A custom brace significantly reduced scapular mobility.
- Acromiohumeral distance was significantly reduced at 90 degrees of arm abduction when scapular mobility was restricted.
- Coracohumeral distance changes were also noted but not detailed as significant in the abstract.
Conclusions:
- Restricted scapular mobility can lead to reduced acromiohumeral distance, a potential precursor to shoulder impingement.
- These findings support the hypothesis that functional deficits in scapular mechanics contribute to the development of impingement syndrome.
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