The knee joint contains 4 main ligaments that provide support and stability to the knee, and limit its movement. One of the ligaments is the LCL, located towards the outside of the knee. A LCL sprain describes the partial to complete disruption of the LCL.
Injuries to the LCL is uncommon, relative to other knee, and ligament injuries. However, like other knee ligament sprains, participation in sports or knee instability are risk factors for a sprain.
With mild and moderate sprains, conservative treatment can return original ligament strength in 6-12 months. Usage of tape and knee brace is encouraged to avoid any setbacks.