Distal Biceps Avulsion

Overview

Distal biceps avulsion is a condition in which the distal biceps tendon is completely torn away from its attachment at the elbow. This injury can lead to significant weakness, particularly with forearm rotation and lifting activities.

Prompt evaluation and treatment by an orthopedic specialist are important to restore strength, function, and overall arm performance.

What Is a Distal Biceps Avulsion?

The distal biceps tendon connects the biceps muscle in the upper arm to the radius bone in the forearm. This tendon is essential for bending the elbow and rotating the forearm (turning the palm upward).

A distal biceps avulsion occurs when the tendon is completely torn from the bone, often due to a sudden, forceful load. Unlike partial tears, avulsions involve full detachment and typically result in noticeable loss of strength.

Common Symptoms of Distal Biceps Avulsion

Symptoms usually occur suddenly at the time of injury and may include:

• A sharp pain in the front of the elbow
• A popping or tearing sensation
• Swelling and bruising around the elbow and forearm
• Weakness in bending the elbow
• Significant loss of strength when rotating the forearm (supination)
• A visible change in the shape of the biceps muscle

If you experience a sudden injury with loss of strength or function, we recommend an orthopedic evaluation.

Causes and Risk Factors

Distal biceps avulsions are typically caused by a sudden force applied to a bent elbow. Common causes include:

• Lifting heavy objects
• Sudden or forceful pulling motions
• Sports injuries
• Falls or accidents

Risk factors may include:

• Age-related tendon degeneration
• Smoking
• Use of corticosteroids
• Repetitive heavy lifting

An orthopedic specialist at UTHealth Houston can evaluate your injury and determine the best course of treatment.

How Is a Distal Biceps Avulsion Diagnosed?

Diagnosis begins with a physical examination and a review of how the injury occurred. Orthopedic providers will assess strength, range of motion, and tendon integrity.

Diagnostic testing may include:

• MRI to confirm the avulsion and assess tendon retraction
• Ultrasound in some cases
• X-rays to rule out associated bone injuries

These tests help confirm the diagnosis and guide treatment planning.

Distal Biceps Avulsion Treatment Options

Non-Surgical Treatments

Non-surgical treatment may be considered for some patients, particularly those with lower activity demands. Options include:

• Activity modification
• Physical therapy to improve function
• Pain management

However, non-surgical treatment may result in permanent loss of strength, especially with forearm rotation.

Surgical Treatment

Surgery is commonly recommended for active individuals with distal biceps avulsion.

Surgical options include:

• Reattachment of the tendon to the radius
• Use of specialized fixation techniques to secure the tendon

The goal of surgery is to restore strength, improve function, and allow return to normal activities.

When to See an Orthopedic Specialist

You should seek orthopedic care if you experience:

• A sudden pop or sharp pain in the elbow
• Weakness in bending the arm or rotating the forearm
• Swelling or bruising
• Changes in the appearance of the biceps muscle

Early evaluation is important, as timely treatment improves surgical outcomes and recovery.

Expert Orthopedic Care at UTHealth Houston Orthopedics

Our orthopedic hand surgeons can provide comprehensive evaluation and personalized treatment, from conservative care to advanced surgical options. You can request an appointment (external link) to receive expert care and lasting relief.