Which ligament (when injured) is typically not treated with surgery?

The medial collateral ligament (MCL) is often not treated with surgery when it is injured, primarily because most MCL injuries, particularly the low-grade sprains, typically heal well with conservative management. This conservative approach usually involves rest, physical therapy, bracing, and gradual return to activities. The MCL has a good blood supply, which enhances its healing potential after an injury.

In contrast, injuries to the anterior cruciate ligament (ACL) and posterior cruciate ligament (PCL) often require surgical intervention, especially in cases of complete tears or when the instability affects the person's functional ability, such as in athletes or active individuals. The lateral collateral ligament (LCL) can also vary in treatment based on the severity of the injury but is more likely to undergo surgical repair in severe cases.

The MCL's ability to heal effectively with non-surgical methods, particularly in its less severe injuries, sets it apart from the other ligaments mentioned in this context.