Understanding Partial ACL Tears: Causes, Symptoms & Treatment

A partial thickness linear intrasubstance tear of the central to distal ACL fibers but without frank rupture is a type of knee injury that involves a partial tear of the anterior cruciate ligament (ACL). The ACL is a thick band of tissue that connects the shin bone (tibia) to the thigh bone (femur) and helps to stabilize the knee joint.

In a partial thickness linear intrasubstance tear, only a portion of the ACL fibers are torn, while the rest of the ligament remains intact. This type of injury is often caused by a sudden twisting or pivoting motion of the knee, and it can be painful and cause swelling and instability.

While a partial thickness linear intrasubstance tear is not as severe as a complete ACL rupture, it can still require treatment, such as physical therapy, bracing, or surgery, to prevent further damage and restore stability to the knee.