Definition:

An injury to the ACL when the joint is carried through a range of motion greater than normal, but without dislocation or fracture; or an injury resulting from tensile force to muscle or tendon of the ACL.

Symptoms:

• Knee instability
• Knee swelling
• Severe pain when bending the knee

Causes:

• Knee hyperextension
• The lower leg is forced forward in relation to the upper leg
• Direct impact from the front of the thigh while the lower leg is in a stable position

Treatment:

• ROM and stretching
• Massage to reduce swelling
• Balance exercises
• Lower extremity strengthening
• Knee stabilization exercises