A tear of the lateral collateral ligament (LCL) in the knee produces pain, swelling, and bruising. The LCL is a band of tissue on the outside of your knee (the side that faces away from your body). This links the lower leg bones to the thigh bone. It avoids your knee from bending excessively outward
Although less prevalent than other ligament injuries, a lateral collateral ligament (LCL) of the knee injury is most typically seen following a high-energy blow to the anteromedial knee that combines hyperextension and significant varus force.
Causes
LCL tears are most common while participating in a sport that requires:
Bending.
Firm contact.
Rapid shifts in direction.
Twisting.
Jumping.
Weaving.
Stop-and-go motions.
The following sports are the most dangerous for LCL tears:
Football
Skiing
Soccer.
Types
Sprained (grade 1),
partially ruptured (grade 2),
Completely ruptured (Grade III)
When the lateral knee components are damaged, further injury to the anterior cruciate ligament (ACL), posterior cruciate ligament (PCL), and posterior-lateral corner (PLC) is common in addition to the LCL.
Signs and Symptoms
Pain is one of the signs of an LCL tear.
Swelling.
Tenderness.
Bruising.
An unsteady sensation. Your knee may feel as if it is going to give way, buckle, or lock up.
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