Diagnosing Carpal Tunnel Syndrome: What Tests Should You Expect?
Published: Jun 14, 2024
If you're experiencing hand pain or numbness, your doctor may suspect carpal tunnel syndrome (CTS). But how do they confirm this diagnosis? Several tests can help pinpoint CTS and rule out other conditions.
Contents
Physical Examination: The First Step
Your doctor will start with a thorough physical exam. They'll check your hand and wrist for tenderness, swelling, and strength. They may perform specific tests like the Tinel's sign (tapping over the median nerve) or Phalen's maneuver (holding the wrists in a flexed position). These tests can provoke CTS symptoms, helping with diagnosis.
Electrodiagnostic Tests: Getting on Your Nerves
The gold standard for CTS diagnosis is electrodiagnostic testing. This includes nerve conduction studies (NCS) and electromyography (EMG). NCS measures how quickly electrical signals travel through the median nerve. In CTS, this signal is often slowed or weakened. EMG examines the electrical activity in hand muscles, which can be affected by CTS.
Imaging: A Deeper Look
While not always necessary, imaging tests can sometimes help diagnose CTS. Ultrasound can show if the median nerve is swollen within the carpal tunnel. MRI provides detailed images of the wrist anatomy and can reveal other causes of symptoms, like tumors or cysts. X-rays may be used if arthritis or fractures are suspected.
Frequently Asked Questions
Most are painless, though EMG may cause brief discomfort.
Electrodiagnostic tests usually take 30-60 minutes.
No test is perfect, but combined with symptoms, they're very reliable.
Most insurance plans cover CTS diagnostic tests when medically necessary.
Key Takeaways
Understanding these tests can help you feel more prepared and empowered in your CTS diagnosis journey.
Curious about which CTS tests might be right for you? Consult with Doctronic to learn more about the diagnostic process.Related Articles
References
Jablecki CK, et al. Practice parameter: Electrodiagnostic studies in carpal tunnel syndrome. Neurology 2002; 58:1589.
Cartwright MS, et al. Evidence-based guideline: neuromuscular ultrasound for the diagnosis of carpal tunnel syndrome. Muscle Nerve 2012; 46:287.
Always discuss health information with your healthcare provider.