The AC Shear Test is a special test used to assess the clavicle, specifically the acromioclavicular (AC) joint.
AC Shear Test Explained
The AC Shear Test helps evaluate potential issues in the AC joint where the clavicle meets the acromion of the scapula. Here's how it's performed:
Test Procedure
- Positioning: The examiner positions their hands over the patient’s shoulder.
- Hand Placement: One heel of the examiner’s hand is placed on the clavicle, and the other heel is positioned on the spine of the scapula.
- Compression: The examiner then squeezes their hands together.
Interpretation of Results
- Positive Result: A positive result is indicated by pain or abnormal movement at the AC joint.
Why is This Test Important?
- Diagnosis: The AC Shear Test is crucial for diagnosing AC joint injuries, including sprains and separations.
- Function: The test assesses the stability and integrity of the AC joint.
- Treatment Guidance: Positive results can guide appropriate treatment plans and further evaluations.
Summary Table of AC Shear Test
| Aspect | Description |
|---|---|
| Purpose | To evaluate the AC joint. |
| Hand Placement | One hand on the clavicle; the other on the scapula's spine. |
| Action | Squeeze hands together. |
| Positive Result | Pain or abnormal movement at the AC joint. |
