MPFL Injury

An MPFL injury affects the ligament that helps keep the kneecap from sliding outward. It commonly occurs during a patellar dislocation.

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Typical Recovery Time

Recovery often takes 6 to 12 weeks for first time injuries.

Symptoms

•Inner kneecap pain
•Swelling
•Instability
•Pain after dislocation
•Tenderness

Common Causes

•Patellar dislocation
•Twisting injury
•Sports trauma
•Ligament laxity
•Shallow groove

Treatment Options

1Bracing

2Physical therapy

3Activity modification

4Anti-inflammatory medication

5Surgery if recurrent

When to See a Doctor

See a doctor after any kneecap dislocation or repeated instability.

Frequently Asked Questions

What is an MPFL injury?

An MPFL injury is damage to the ligament that helps keep the kneecap from sliding out of place. It commonly occurs when the kneecap dislocates or shifts to the outside of the knee. This injury can lead to pain, swelling, and instability.

What causes an MPFL injury?

It is usually caused by a patellar dislocation or a twisting injury to the knee. Sports that involve cutting, pivoting, or jumping increase the risk. Some people are more prone to this injury because of kneecap alignment or ligament laxity.

What are the symptoms?

Symptoms include pain around the kneecap, swelling, and a feeling that the kneecap may slip out again. Some patients feel instability with stairs, squatting, or sports. Bruising and limited motion may occur after the injury.

How is an MPFL injury treated?

Treatment may include bracing, physical therapy, and strengthening the muscles around the knee and hip. First-time injuries are often treated without surgery. Surgery may be considered for repeated dislocations or ongoing instability.

When can I return to sports?

Return to sports depends on swelling, strength, kneecap stability, and confidence with movement. Many non-surgical cases take several weeks to months. Athletes should return gradually once cutting, jumping, and landing are pain-free and stable.

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