A positive Durkan's test, also known as the Carpal Compression Test, indicates a potential issue with the median nerve in the wrist.
Understanding the Durkan's Test
The Durkan's test is a physical examination technique used to assess for carpal tunnel syndrome, a condition where the median nerve is compressed at the wrist.
How the Test is Performed
The test involves the following steps:
- The patient's wrist is gently flexed.
- The examiner applies direct pressure with their thumb over the median nerve at the proximal wrist crease.
- This pressure is sustained for approximately 30 seconds.
A Positive Test
According to the provided reference, a positive Durkan’s test is when the patient experiences:
- Pain
- Paresthesia (a tingling or prickling sensation)
- Numbness
- These symptoms occur within the distribution of the median nerve during the 30-second compression. This nerve is responsible for sensation in the thumb, index finger, middle finger, and the radial side of the ring finger.
Interpreting Results
A positive Durkan's test suggests possible median nerve compression, commonly due to carpal tunnel syndrome. However, a positive test alone isn't definitive for diagnosis. Further clinical evaluation and diagnostic tests, such as nerve conduction studies, are often needed to confirm the diagnosis and determine the severity.
Importance
Recognizing a positive Durkan's test is crucial for:
- Early detection: Enabling prompt diagnosis of median nerve compression.
- Treatment planning: Guiding appropriate management strategies.
- Referral: Prompting referral to specialist when needed.
Summary
| Test Aspect | Description |
|---|---|
| Test Name | Durkan's Test (Carpal Compression Test) |
| Technique | Direct compression over the median nerve at the proximal wrist crease with the wrist in slight flexion |
| Duration of Pressure | Approximately 30 seconds |
| Positive Result | Pain, paresthesia, or numbness in the median nerve distribution during compression |
| Implication | Suggestive of median nerve compression, often associated with carpal tunnel syndrome, requires further evaluation for definitive diagnosis. |
