ANTERIOR CRUCIATE LIGAMENT TEAR

Question 1

Mechanism

Answer 1

Acute sudden deceleration injury
Hyperextension
Marked internal rotation of the tibia on the femur

Question 2

Clinical Features

Answer 2

Associated “pop” with the injury
Often must stop playing immediately
Unable to weight bear
Usually significant swelling 1-2 hr post injury
Restricted flexion
+ Lachman Test
+ Anterior Drawer Test

Question 3

X-RAY Findings

Answer 3

Usually normal
+/- Avulsion of the Anterior Tibial Spine
+/- Segond Fracture

Question 4

ED Management

Answer 4

Tensor
Crutches
Weight Bear as Tolerated
Knee Immobilizer PRN
Range of Motion Exercises PRN
Early Follow up with Ortho