Pronator teres syndrome

Pronator teres syndrome is a neuropathy that occurs when the median nerve is compressed at the elbow. The median nerve runs down the arm and provides sensation to the thumb, index finger, middle finger, and half of the ring finger. It also controls most of the small muscles in the hand that allow for fine finger movements, and some of the bigger muscles that help with thumb movements.

Symptoms

The symptoms of pronator teres syndrome can vary, but often include pain, numbness, and tingling in the forearm and hand. The pain is usually felt in the middle of the forearm, but can also radiate down to the hand and fingers. Other symptoms may include weakness in the hand and difficulty with fine motor tasks such as buttoning a shirt or writing.

Causes

Pronator teres syndrome is caused by compression of the median nerve as it passes between the two heads of the pronator teres muscle in the forearm. This can occur due to overuse of the forearm muscles, such as with repetitive activities like typing or playing a musical instrument. It can also occur due to direct trauma to the forearm, such as a blow or fall.

Diagnosis

The diagnosis of pronator teres syndrome is often made based on the patient's symptoms and a physical examination. During the examination, the doctor may perform certain maneuvers to see if they reproduce the patient's pain. Imaging tests such as MRI or ultrasound may also be used to confirm the diagnosis and rule out other conditions that can cause similar symptoms.

Treatment

The treatment for pronator teres syndrome usually involves conservative measures such as rest, physical therapy, and pain management. In some cases, surgery may be needed to relieve the pressure on the median nerve.