Mechanism of injury:
Rapid deceleration or direction changes
Pivoting on lower extremity with foot planted

Signs / symptoms:
Pain: sudden onset, severe
Popping sensation at the time of injury
Significant swelling (effusion/hemarthrosis)
Joint instability

Physical exam: Anterior laxity of the tibia relative to the femur (anterior drawer test, Lachman test)

Imaging:
Plain x-rays usually normal, but fracture of tibial spine or anterolateral tibial plateau suggests ACL tear
MRI provides definitive diagnosis

Treatment:
RICE (Rest, Ice, Compression, Elevation) measures
± Surgery depending on age & activity level

свернуть