Radial tunnel syndrome12/24/2023 Differential diagnosisĬlinically, the radial tunnel syndrome can occasionally be confused with tennis elbow ( lateral epicondylitis). It is also sometimes known colloquially as persistent tennis. Some authors suggest surgical decompression to avoid permanent nerve damage. Radial Tunnel Syndrome involves compression of the radial nerve in the proximal forearm. MRI may also identify alternative conditions that may explain the patient's symptoms, such as lateral epicondylitis, or may identify compressive lesions that may be amenable to surgical resection or decompression 2. Radial tunnel syndrome (RTS) is a compressive neuropathy (without any motor deficits) involving one of the terminal branches of the radial nerve, the posterior interosseous nerve (PIN), as it passes through the radial tunnel: Controversy exists as to the exact definition and existence of this condition ( 1, 2 ). This is typically seen within the supinator muscle, followed by the proximal forearm extensor muscles. Radial Tunnel syndrome involves the radial nerve, and any condition that affects the nerves will have sensory symptoms, which include pain. This pain-only phenomenon is contrasted with PIN compression syndrome, which describes a more severe PIN compressive neuropathy, ultimately. Radiographic features MRIĮvidence of muscle denervation (edema or atrophy) along the posterior interosseous nerve distribution is the most common finding on MRI 4. Radial tunnel syndrome refers to a rare compressive neuropathy of the posterior interosseous nerve (PIN) as it passes through the radial tunnel resulting in pain without motor or sensory dysfunction. It is a result of compression of the posterior interosseous nerve (deep motor branch of the radial nerve) as it passes through the lateral muscular septum 1. Pain may radiate up to the shoulder and neck and is aggravated by the use of the hand 1.Įlectromyographic findings that might suggest or confirm the diagnosis are typically absent. Pain on resisted supination of the forearm and pain on resisted middle finger extension is common 2. (See also Overview and Evaluation of Hand Disorders. Treatments include splinting and sometimes surgical decompression. The disease is more prevalent in women with the age of 30 to 50 years old. It is diagnosed with lateral elbow and dorsal forearm pain may radiate to the wrist and dorsum of the fingers. The syndrome is characterized by pain along the radial aspect of the proximal forearm and, despite it being compression of a motor nerve, it is characterized by the absence of neurologic deficits. Radial tunnel syndrome is compression of the radial nerve in the proximal forearm. Radial tunnel syndrome is a disease which we should consider it in elbow and forearm pains.
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