Overview
The collateral ligaments stabilize the inner (MCL) and outer (LCL) sides of the knee. The MCL is the most commonly injured, usually from a blow to the outside of the knee or a twist. Most collateral ligament injuries heal well with bracing and rehabilitation without surgery.
Common Symptoms
- Pain and tenderness along the inner or outer knee
- Swelling
- A feeling of the knee giving way sideways
- Pain with side-to-side stress
Causes & Risk Factors
- A direct blow to the side of the knee
- A twisting or cutting injury
- Contact sports such as football and skiing
Treatment Options
- Bracing and a progressive rehabilitation program
- Activity modification and anti-inflammatory measures
- Physical therapy to restore strength and stability
- Surgical repair or reconstruction for rare high-grade or combined injuries
Recovery & What to Expect
Most MCL injuries heal with bracing and therapy over 3-8 weeks depending on severity. Combined ligament injuries are less common and may require surgery.
This page is for general education and is not a substitute for a medical evaluation. Treatment recommendations depend on your individual diagnosis and goals. Kevin O'Donnell, MD serves Coral Gables, Miami, Brickell, Pinecrest, Coconut Grove.