Lateral Ulnar Collateral Ligament Injuries (Elbow)

Overview

Lateral ulnar collateral ligament (LUCL) injuries are conditions in which a key stabilizing ligament on the outer side of the elbow is stretched or torn. These injuries can lead to elbow instability, pain, and difficulty with weight-bearing or pushing activities.

Early evaluation and treatment by an orthopedic specialist are important for restoring stability, relieving symptoms, and preventing long-term complications.

What Are LUCL Injuries of the Elbow?

The lateral ulnar collateral ligament (LUCL) is part of the lateral collateral ligament complex of the elbow and plays a critical role in stabilizing the joint, particularly against rotational forces.

An LUCL injury can lead to a condition known as posterolateral rotatory instability (PLRI), where the elbow becomes unstable during certain movements.

These injuries can affect both joint stability and overall arm function.

Common Symptoms of LUCL Injuries

Symptoms may develop after an injury or gradually over time. Common signs include:

• Pain on the outer side of the elbow
• A feeling of instability or the elbow “giving way”
• Clicking, popping, or catching sensations
• Difficulty with pushing movements (such as pushing up from a chair)
• Weakness or decreased function

If you’re experiencing elbow instability or persistent pain, we recommend an orthopedic evaluation.

Causes and Risk Factors

LUCL injuries are typically caused by trauma or repetitive stress. Common causes include:

• Elbow dislocation
• Falls onto an outstretched hand
• Sports injuries
• Repetitive loading of the elbow

Risk factors may include prior elbow injuries, high-demand activities, or instability following trauma.

An orthopedic specialist at UTHealth Houston can evaluate your injury and determine the appropriate treatment.

How Are LUCL Injuries Diagnosed?

Diagnosis begins with a physical examination and a review of symptoms and injury history. Orthopedic providers will assess elbow stability, range of motion, and areas of tenderness.

Diagnostic testing may include:

• X-rays to evaluate joint alignment
• MRI to assess ligament damage
• CT scans in complex cases

These tests help confirm the diagnosis and guide treatment planning.

LUCL Injury Treatment Options

Non-Surgical Treatments

In mild cases, non-surgical treatment may be recommended, including:

• Activity modification
• Bracing to support the elbow
• Anti-inflammatory medications
• Physical therapy to strengthen surrounding muscles

Surgical Treatment

Surgery may be recommended for persistent instability or significant ligament tears.

Surgical options may include:

• Ligament repair or reconstruction
• Stabilization procedures to restore joint alignment

The goal of surgery is to restore stability, relieve symptoms, and allow return to normal activities.

When to See an Orthopedic Specialist

You should seek orthopedic care if you experience:

• Persistent elbow pain
• A feeling of instability or the elbow giving way
• Difficulty with pushing or weight-bearing activities
• Clicking or mechanical symptoms

Early treatment can help prevent chronic instability and long-term joint damage.

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. If you’re experiencing wrist pain, hand numbness, or tingling, you can request an appointment (external link) to receive expert care and lasting relief.