The term "Phalen" in medical contexts refers to the Phalen maneuver, a diagnostic test used primarily to evaluate for carpal tunnel syndrome.
Understanding the Phalen Maneuver
The Phalen maneuver is a physical examination technique that helps identify compression of the median nerve within the carpal tunnel, a narrow passageway in the wrist. Here's a breakdown:
How it's Performed
| Step | Description |
|---|---|
| 1 | The patient holds both wrists in complete and forced flexion. |
| 2 | This means pushing the dorsal (back) surfaces of both hands together. |
| 3 | The position is maintained for 30 to 60 seconds. |
What Happens
- Forcing the wrist into flexion increases pressure within the carpal tunnel.
- If the median nerve is already compressed or irritated, the increased pressure can trigger or worsen symptoms.
- These symptoms may include numbness, tingling, or pain in the fingers (especially the thumb, index, middle, and part of the ring finger) or palm.
Positive Result
- A positive Phalen test is indicated when the patient experiences increased symptoms of carpal tunnel syndrome, such as numbness, tingling, or pain, during the test.
- This suggests that the median nerve is being compressed and may contribute to a diagnosis of carpal tunnel syndrome.
Limitations of Phalen Maneuver
* While useful, the Phalen test is not always accurate and is often used in conjunction with other diagnostic methods.
* The test is relatively subjective and relies on the patient's report of symptoms.
* Other conditions may cause similar symptoms, leading to false-positive results.Key Points
- The Phalen maneuver is an important tool used by medical professionals to aid in the assessment of carpal tunnel syndrome.
- It involves a specific wrist position held for a brief period, designed to replicate the pressure on the median nerve.
- The test is helpful, but often combined with a medical history, physical examination, and sometimes nerve conduction studies for a complete diagnosis.
