How to Overcome Radial Tunnel Syndrome and Relieve Elbow Pain

Radial tunnel syndrome (RTS) happens when the radial nerve — a major nerve that runs through your forearm — gets compressed or irritated as it passes through a narrow space called the radial tunnel.

This condition is less common than carpal tunnel or cubital tunnel syndrome, but it can still cause significant discomfort. The radial nerve controls both sensation and muscle movement, so compression can affect your ability to grip, extend your fingers, or even move your wrist properly.

The most frequent site of compression is at the Arcade of Frohse, a thickened area of muscle and tissue near the elbow.

What Causes Radial Tunnel Syndrome?

Radial tunnel syndrome is usually caused by repetitive strain or overuse of the arm and wrist. Common triggers include:

Repeated gripping or twisting motions (e.g., turning a screwdriver)
Prolonged wrist extension or forearm rotation
Jobs involving vibration tools or heavy lifting
Sports that involve forceful forearm use, such as tennis or weightlifting

RTS can also occur alongside other conditions like De Quervain’s Tenosynovitis, lateral epicondylitis (tennis elbow), or even cervical and upper thoracic issues like Thoracic Segmental Joint Dysfunction. Research shows up to 10% of tennis elbow patients may also have radial tunnel syndrome.

Symptoms to Look For

Radial tunnel syndrome symptoms can feel similar to tennis elbow, which is why it’s often misdiagnosed.

Common symptoms include:

Deep, aching pain in the forearm (often felt near the elbow)
Pain radiating to the back of the hand, thumb, or index finger
Weakness when trying to extend your fingers or thumb (sometimes called “finger drop”)
Pain that worsens at night — more common in RTS than in tennis elbow
Tenderness when pressing over the radial nerve below the outside of the elbow

Unlike carpal tunnel syndrome, RTS usually doesn’t cause numbness in the palm, but it may cause tingling or sensitivity in the back of the forearm or hand.

How It’s Diagnosed

Doctors will carefully examine your elbow, forearm, and wrist. They may use specific tests, such as:

Radial tunnel compression test – pressing over the radial nerve to see if symptoms are reproduced
Resisted supination test – twisting the forearm against resistance to see if pain worsens (suggests Arcade of Frohse involvement)
Middle finger test – extending the middle finger against resistance, which may trigger pain if the nerve is compressed by nearby muscles

Because RTS is easily confused with lateral epicondylitis (tennis elbow) or other nerve issues like Axillary Neuropathy, imaging such as MRI or ultrasound may be used to rule out other problems.

Treatment Options

Most patients improve with conservative (non-surgical) care. The main goals are to reduce irritation, restore mobility, and strengthen the arm.

Conservative Care

Rest & activity modification – Avoid repetitive gripping, twisting, or heavy lifting.
Ice or therapy – Ice massage, pulsed ultrasound, or electrotherapy may reduce inflammation.
Splinting – A temporary wrist or elbow splint may reduce strain (but avoid counterforce braces used for tennis elbow, as these often make RTS worse).
Soft tissue therapy – Massage, myofascial release, and stretching of the forearm muscles can relieve tension.
Nerve gliding (“flossing”) exercises – Gentle movements to improve nerve mobility without aggravating symptoms.
Postural and spine care – Since up to 70% of patients with lateral elbow pain also have cervical or thoracic issues, addressing spinal mobility is key.

When Surgery Is Needed

If symptoms don’t improve after about 12 weeks of conservative care, or if there’s significant muscle weakness, surgical decompression may be considered. Surgery is successful in about 70–90% of cases.

With early treatment, most patients recover well and return to normal activities. Identifying the condition early is important — otherwise, symptoms may linger or worsen with repetitive use.

At Cole Pain Therapy Group, we take a comprehensive approach, addressing not just the nerve irritation itself but also any related issues such as posture, biomechanics, or contributing conditions like De Quervain’s Tenosynovitis or shoulder restrictions.

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2845 Summer Oaks Dr, Memphis, TN 38134
(901) 377-2340

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Richard L. Cole, DC, DACNB, DAIPM, FIACN, FICC
Jeffrey D. Luebbe, DC, CCRD, CCSP
W. Steven Vollmer, DC, DAAPM
Bradford J. Cole, DC, MS, CSCS
J. Colby Poston, DC
Daniel H. Smith, DC
2845 Summer Oaks Dr., Memphis, TN 38134
(901) 377-2340

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