Cubital Tunnel Syndrome
What Is Cubital Tunnel Syndrome?
Cubital Tunnel Syndrome is a condition caused by compression or irritation of the ulnar nerve as it passes behind the elbow, through a narrow space called the cubital tunnel. The ulnar nerve—commonly known as the “funny bone” nerve—is responsible for sensation in the ring and little fingers, and for powering fine motor control in parts of the hand.
When this nerve becomes compressed or inflamed, it can lead to numbness, tingling, weakness, and eventually muscle wasting in the hand if left untreated.
Causes and Risk Factors
Prolonged elbow bending, such as during phone use or sleeping with elbows bent
Leaning on the elbow frequently (e.g., desk work, driving)
Elbow arthritis, bone spurs, or prior fractures
Repetitive motions or overhead throwing in athletes
Previous elbow surgery or trauma
Symptoms
Numbness or tingling in the ring and little fingers
Symptoms often worsen at night or with prolonged elbow bending
Hand weakness, especially in grip strength or fine motor skills
Difficulty with tasks like typing, opening jars, or manipulating small objects
In advanced cases, muscle wasting (atrophy) in the hand and claw-like finger position
Diagnosis
Physical exam, including:
Tinel’s sign (tapping the ulnar nerve at the elbow reproduces symptoms)
Elbow flexion test (symptoms worsen when the elbow is bent)
Nerve conduction studies and EMG to evaluate the speed and integrity of nerve signals
Imaging such as X-rays or MRI may be used to rule out structural causes like bone spurs
Treatment
Non-Surgical Treatment
Often effective in early or mild cases
Includes:
Activity modification (avoiding prolonged elbow flexion or pressure)
Elbow padding or night splints to keep the arm straight during sleep
Anti-inflammatory medications
Physical therapy to stretch and strengthen the surrounding muscles
Surgical Treatment
Considered when symptoms are severe, progressive, or not improving with conservative care
Surgical options include:
Ulnar nerve decompression (relieves pressure without moving the nerve)
Anterior transposition (moves the nerve to a less vulnerable position in front of the elbow)
Medial epicondylectomy in selected cases
Recovery Outlook
Postoperative recovery typically begins with light movement and restrictions on heavy activity
Most patients resume normal function in 4 to 6 weeks
Full nerve recovery may take several months, depending on the duration and severity of pre-surgical symptoms
Why Kerlan Jobe Institute?
At Kerlan Jobe Institute, our specialists provide comprehensive care for cubital tunnel syndrome, using both advanced diagnostic tools and tailored treatment plans. Our goal is to preserve hand function, alleviate discomfort, and restore quality of life with minimal downtime.