Whether ligament injury can be healed depends on the severity of the injury. Generally, there are four types of ligament injuries. The mildest is a sprain, which is when some fibers of the ligament are torn. The second type is a partial tear of the ligament, the third type is a complete tear of the ligament, and the fourth type is a combined injury, which includes damage to other structures in addition to the ligament injury. If the ligament injury is just a sprain, it can generally heal within two to three weeks with immobilization. However, partial ligament tears that are more severe may require surgical intervention. If the partial ligament injury is not severe and does not affect stability, it can also heal with about three to six weeks of immobilization. However, complete ligament tears or combined injuries often require surgery for suturing or reconstruction in order to heal.