How can an ACL be torn?
An ACL tear is extremely common in athletics as a whole, but even more common in female athletes. Lack of a fully functioning and healthy ACL would cause the knee to buckle, lose movement, and strength. The ligament usually tears when moving at a low speed. The ligament becomes stretched when the foot is firmly planted and twists/pivots at the same time causing the knee to lock and ultimately leading to a tear. Also, some ACL tears can be caused when the tibia is abruptly pushed forward against the femur. ACL tears are popular in sports such as soccer, basketball, football, and gymnastics. In these sports, jumping and pivoting are key, which causes the ACL to tear. ACL injuries are divided into three groups:
- A grade one ACL injury is mild and may involve a very small tear. The ligament is slightly stretched in this case. However, the ligament still keeps the knee stable.
- A grade two ACL injury is a moderate injury and may involve a partial tear of the ligament. In this case, the ACL is loosened and has lost some stability.
- A grade three ACL injury is severe and involves a complete tear of the ligament. In this case, stability and mobilization are usually completely compromised. Grade three ACL injuries are the most common.
