If you are on this page reading this, it means you have a chronic painful condition of the outer aspect of the elbow of your dominant working hand which has been earlier diagnosed by many physicians as Tennis Elbow and you have taken multiple treatments and therapies for the same but have no relief.
There might be a possibility that you are suffering from tennis elbow and are in the recovery phase which is quite long and can last up to one year during treatment for tennis elbow.
There is one more entity known as radial tunnel syndrome which is often confused with tennis elbow. The patients may have chronic pain in the elbow region and at the back of the upper part of the forearm.
The radial nerve is one of three nerves in your forearm, traveling from the side of your neck, down the back of your arm, through your forearm, and into your hand.
Your radial nerve is responsible for a lot of different arm movements, including forearm rotation, elbow straightening, and wrist and finger movements.
Where is the radial tunnel located?
When the radial nerve reaches the elbow, it passes through the radial tunnel, which is a very narrow space surrounded by a lot of muscles. The nerve when compressed here often causes nagging pain in the upper part of the back of the forearm.
What is radial tunnel syndrome?
Radial tunnel syndrome occurs when a nerve called the radial nerve is compressed as it enters the radial tunnel in the forearm.
It also gives rise to pain around the same region which is affected by tennis elbow but has a completely different etiology and management. That is why radial tunnel syndrome is often called a resistant tennis elbow.
Who is at risk of developing radial tunnel syndrome?
Radial tunnel syndrome is most common in women between the ages of 30 and 50 years.
When the radial nerve passes through the radial tunnel which is surrounded by muscles covered with fascia (tissue fibers that enclose, separate, or bind together muscles and other soft structures), it becomes vulnerable to compression and irritation by the surrounding structures.
If any of the structures become inflamed, it puts too much pressure on the nerve, leading to this condition. But several different activities can cause radial tunnel syndrome, including:
1. Profound nagging pain in the area on the outside of the elbow, stretching down to the forearm which causes fatigue in the muscles while doing daily work. Pain may also get worse while sleeping. Certain activities can make these symptoms worse, including:
2. Over time, radial tunnel syndrome can weaken the muscles of the forearm and decrease wrist strength, making it increasingly difficult to grip or lift certain things.
3. If unrelieved, it can cause wrist or finger, thumb drop, meaning you lose the ability to lift your hand or fingers and thumb from a drop position.
Radial tunnel syndrome is very frequently misdiagnosed as tennis elbow because of the same site of location of pain which also increases with twisting and turning movements of the wrist.
A careful history and proper physical examination can help in arriving at a diagnosis of radial tunnel syndrome.
1. The maximum pain in tennis elbow is at the region of the lateral epicondyle bone of the elbow region whereas in radial tunnel syndrome, it is 2 to 3 centimeters distal to the bone.
2. The area can be examined for pain by applying light pressure and doing a few provocative tests which can help in the diagnosis-
There are no formal imaging tests that can diagnose radial tunnel syndrome, though an X-ray, MRI, or electromyography test, is done just to rule out other potential injuries or conditions.
The goal of treatment is to eliminate pain and prevent it from ever coming back. Proven nonsurgical techniques exist which can benefit the condition of radial tunnel syndrome.
If symptoms don’t improve after nonsurgical treatment, then surgery is indicated which is done under brachial block or general anesthesia.
The goal of surgical decompression is to take the unwanted pressure off the radial nerve as it passes through the radial tunnel.
An incision is given right below the outside of the elbow and into the forearm. The area compressing the nerve is released, expanding the tunnel in the process.
If the patient has presented very late, then it can lead to radial nerve palsy with atrophy of the muscles of the back of the forearm. He or she would have permanent wrist, finger, and thumb drops.
Such condition of wrist drop and finger, thumb drop (inability to extend the wrist, thumb, and fingers) is also usually seen in long-standing compression of the radial nerves due to tumors or injuries of the radial nerve after accidents or fractures.
How are late cases of radial nerve compression managed?
Release of the compression along with the tendon transfers should be done to strengthen the weak portions of the hand.
A strong tendon of the hand is re-routed to substitute a weaker or lost movement of the hand.
How is tendon transfer done for radial nerve compression?
During tendon transfers for radial nerve palsy, 3 tendons from the front of the forearm and hand are taken, re-routed, and sutured to the tendons of the back of the forearm and hand so that the patient can extend his wrist, fingers, and thumb.
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Resistant Tennis Elbow is a condition characterized by persistent pain on the outer aspect of the dominant working hand’s elbow. It often occurs after multiple treatments for the traditional Tennis Elbow have failed.
Radial Tunnel Syndrome is a condition where the radial nerve gets compressed as it enters the radial tunnel in the forearm. This can cause chronic pain in the elbow region and upper part of the forearm.
Radial Tunnel Syndrome is more common in women aged 30 to 50, individuals with poor forearm and wrist strength, athletes with inadequate warm-up routines, and those with conditions like diabetes or tumors in the arm.
Symptoms include nagging pain on the outside of the elbow, stretching down to the forearm, which worsens during certain activities. In advanced cases, it can lead to muscle weakness and loss of hand function.
Diagnosis involves a careful history and physical examination, with pain being localized about 2-3 centimeters distal to the lateral epicondyle. Diagnostic tests, such as X-rays and EMG, are used to rule out other conditions.
Non-surgical treatments include modifying activities that cause pain, rest, anti-inflammatory medications, wrist and elbow splints, physical therapy exercises, and steroid injections.
Surgery is considered when non-surgical treatments fail. It involves decompressing the radial nerve, and recovery typically takes several months.
Late-stage radial nerve compression can result in radial nerve palsy, characterized by muscle atrophy in the back of the forearm and permanent wrist, finger, and thumb drop.
Late cases involve releasing the compression and performing tendon transfers to strengthen the affected hand.
During tendon transfers, tendons from the front of the forearm and hand are re-routed to restore wrist, finger, and thumb extension. Surgery is followed by immobilization and rehabilitation.
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