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Computerized dynamic posturography analysis of balance in individuals with a shoulder stabilization sling
1Department of Trauma and Orthopaedics, Beaumont Hospital, Beaumont, Dublin 9, Ireland. darrenflui@gmail.com.
Summary
Wearing a shoulder stabilization sling (SSS) significantly impairs balance, especially when used on the non-dominant arm. This study highlights the need for careful consideration of sling use duration and alternatives in patient care.
Area of Science:
- Orthopedics
- Biomechanics
- Rehabilitation Medicine
Background:
- Sling immobilization of the upper limb is common for shoulder injuries.
- Balance control is crucial for overall stability and fall prevention.
- Objective assessment of balance under dynamic conditions is needed.
Purpose of the Study:
- To objectively assess the impact of a shoulder stabilization sling (SSS) on balance control.
- To compare balance in individuals using an SSS on their dominant vs. non-dominant arm.
- To evaluate the prevalence of imbalance and falls associated with SSS use.
Main Methods:
- Utilized computerized dynamic posturography (CDP) with an EquiTest system.
- Included 42 healthy adults: six controls and two SSS groups (18 dominant hand, 18 non-dominant hand).
- Assessed balance using the Sensory Organization Test (SOT), Motor Control Test (MCT), and Adaptation Test (ADT).
Main Results:
- Sling users exhibited significantly lower composite equilibrium scores (CES) than controls (p=0.025).
- Approximately 31% of sling users showed decreased CES, with 22.9% experiencing imbalances.
- Imbalances and falls were more frequent when the sling was worn on the non-dominant hand compared to the dominant hand (p=0.044).
Conclusions:
- Shoulder stabilization slings significantly impair balance in healthy individuals.
- Balance deficits are more pronounced when the sling is worn on the non-dominant upper limb.
- Clinical implications suggest evaluating sling duration and considering alternatives for patients requiring prolonged immobilization.
