Acl tear symptoms ?

Pop, swelling: An acl tear classically involves either a hyperextension or valgus contact (blow to outside of knee)mechanism of injury. Symptoms include hearing or feeling a 'pop' in the knee w/ immediate pain. Significant swelling ( hemarthrosis) w/in 24 hrs.Of the injury is common. Sometimes a feeling of 'looseness' is felt if the patient walks after the injury.An exam by an experienced ors will confirm.

ACL tear symptoms : Pain and instability of knee joint.

Instability.: Usually one notices knee instability , or a sense of the knee buckling, with an ACL tear.There could be swelling and pain involved as well.

Common symptoms: Include instability with lateral of twisting movement. Often people will say their knee just feels weak or loose or mushy. Catching and locking can be symptoms as well as significant swelling initially. Usually is a result of a non contact twisting injury to the knee. Often people will say they heard or felt a pop.