What Are MCL and LCL Sprain Injuries?
Medial collateral ligament (MCL) and lateral collateral ligament (LCL) sprains are knee injuries.
The MCL is the ligament located on the inside of your knee joint. It links your thighbone (femur) and shinbone (tibia).
The LCL is the ligament located on the outside of your knee linking the thighbone and calf bone (fibula).
MCL and LCL sprain causes
The two most common causes of MCL sprains are when:
- A player applies force to the outside side of your knee during contact sports, such as football and soccer.
- You catch your foot in the ground and try to turn to the side, away from the planted leg.
An LCL sprain can occur if a player applies force to the inside of your knee during contact sports.
MCL and LCL sprain risk factors
You increase your risk of an MCL or LCL sprain if you play contact sports, like football or soccer.
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