Anterior Cruciate Ligament Injury - Clinical Presentation

Clinical Presentation: Anterior "drawer sign" +

Knee Exam (Page 424)
ACL: extends from lateral femoral condyle to anterior tibia.
Test: Anterior drawer sign; Procedure: Bending knee at 90° angle, increased anterior gliding of tibia due to ACL injury. Lachman test is similar, but at 30° angle.

Common Knee Conditions (Page 425)
Unhappy Triad: Common injury in contact sports due to lateral force applied to a planted leg. Classically, consists of damage to the ACL , MCL, and medial meniscus (attached to MCL); however, lateral meniscus injury is more common. Presents with acute knee pain and signs of joint injury/instability.