Cubital Tunnel Syndrome
Specialist Care by Dr Oscar Brumby-Rendell – Orthopaedic Elbow and Nerve Surgeon
When the elbow's ulnar nerve has been compressed or stretched, cubital tunnel syndrome (or ulnar nerve entrapment) results. Similar to carpal tunnel syndrome, this elbow condition causes pain, numbness and reduced mobility.
What is Cubital Tunnel Syndrome?
Cubital Tunnel Syndrome occurs when the ulnar nerve becomes compressed as it travels behind the elbow. The ulnar nerve controls sensation in the ring and little fingers and powers several small muscles in the hand.
When compressed, this nerve causes symptoms similar to carpal tunnel syndrome—but affecting a different area of the arm. If left untreated, it can lead to permanent nerve damage and hand weakness.
Various occurrences can result in the development of cubital tunnel syndrome, including:
- Prolonged bending of the elbow (i.e., while sleeping)
- Blow to the elbow's inside (the 'funny bone')
- Prolonged leaning on the elbow (specifically on a firm exterior)
- Repetitive stretching or twisting of the ulnar nerve during physical activity
When the elbow moves, the ulnar nerve may also snap from side to side over a bony bump; however, this is less common.
Individuals who have a history of elbow injuries (such as dislocations), arthritis, bone spurs, or other elbow joint problems have a greater risk of cubital tunnel syndrome development. People who must perform repetitive elbow bending or flexing motions (such as in a work or sport setting) also have a higher risk of developing this condition.
Cause and Risk Factor
Cubital Tunnel Syndrome is often caused by:
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Frequent bending of the elbow (e.g. during phone use, sleeping, or typing)
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Leaning on the elbow for extended periods
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Direct trauma or previous elbow fractures
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Repetitive motion from sports or work
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Thickened ligaments or soft tissue that compress the nerve
People who sleep with bent elbows or engage in overhead activities (e.g. painters, athletes, manual workers) are particularly at risk.
Symptoms
Early signs of cubital tunnel syndrome may include:
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Numbness and tingling in the ring and little fingers
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Hand or grip weakness
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Pain on the inside of the elbow
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"Pins and needles" feeling, especially at night
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Clumsiness or dropping objects
As the condition progresses, it can cause muscle wasting in the hand, which may be irreversible without treatment.
Diagnosis of Cubital Tunnel Syndrome
Dr Brumby-Rendell will begin with a comprehensive clinical assessment, which includes:
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Detailed symptom history and physical examination
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Nerve conduction studies (NCS) and electromyography (EMG) to measure nerve function
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Occasionally, ultrasound or MRI may be used to rule out other causes of nerve compression
Accurate diagnosis ensures a more effective and personalised treatment plan.
Treatment
Non-Surgical Treatments
For mild to moderate cases, non-operative treatments can effectively reduce symptoms:
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Activity modification to reduce pressure on the elbow
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Elbow splints or braces, particularly during sleep
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Anti-inflammatory medications
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Nerve gliding exercises prescribed by a physiotherapist
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Postural correction and ergonomic changes at work
Early intervention often prevents permanent nerve damage and avoids the need for surgery.
Surgical Treatments
Surgery may be necessary if:
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Symptoms persist or worsen despite conservative treatment
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Nerve studies show progressive damage
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Muscle weakness or wasting is present
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Dr Brumby-Rendell offers advanced surgical options, including:
- Ulnar Nerve Decompression: Releases pressure on the nerve without moving it from its original position.
- Anterior Transposition of the Ulnar Nerve: Relocates the ulnar nerve to the front of the elbow to relieve tension and compression.
- Medial Epicondylectomy: Removes part of the bone at the inner elbow to make space for the nerve.
These procedures are often done using minimally invasive techniques, resulting in less post-operative pain and faster recovery.
Recovery After Cubital Tunnel Surgery
Most patients experience significant symptom improvement following surgery.
Recovery typically includes:
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Protective splinting for the first 1–2 weeks
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Gradual return to movement under guided physiotherapy
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Light activities resumed within 2–4 weeks
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Full recovery in 6–12 weeks depending on the procedure and severity
Dr Brumby-Rendell works closely with experienced hand therapists across Adelaide to optimise recovery and prevent recurrence.
Frequently Asked Questions
The more advanced the condition, for example, when there is muscle weakness or atrophy, or when symptoms have been present for a long time, the longer it typically takes to recover and the more likely there will be some residual deficits.
Mild cases managed early often resolve with nonsurgical treatments and show good return of function. In contrast, severe or long-standing compression may require surgery and have a slower or incomplete recovery.
Why Choose Dr Oscar Brumby-Rendell for Cubital Tunnel Syndrome Care?
Dr Brumby-Rendell is a trusted expert in nerve decompression and elbow surgery. His focus on minimally invasive, patient-specific treatments ensures each patient receives the most effective and efficient care possible.
Benefits of care with Dr Brumby-Rendell:
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Fellowship-trained in upper limb and nerve surgery
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Advanced diagnostic and surgical techniques
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Personalised recovery and rehabilitation plans
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Convenient Adelaide-based practice with ongoing support
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