Knee Ligament Injuries
A 32-year-old motorcyclist is brought to the emergency department after a collision. His right knee is grossly unstable with no visible deformity (the knee has spontaneously reduced). Examination reveals global ligamentous laxity with positive anterior drawer, posterior drawer, and varus-valgus instability. The foot is cool and pale with a weak dorsalis pedis pulse. The patient cannot dorsiflex his ankle or extend his great toe. Radiographs show no fracture. Regarding multiligament knee injuries:
Mark each as TRUE or FALSE
A multiligament knee injury (MLKI) involves two or more major knee ligaments (ACL, PCL, MCL, LCL/PLC...
Vascular injury (popliteal artery) occurs in 20-40% of knee dislocations and must be ruled out emerg...
Vascular injury is rare (less than 5%) in knee dislocations; normal pulses exclude arterial injury; ...
The Schenck classification organizes MLKIs: KD-I (cruciate + collateral), KD-II (both cruciates), KD...
Management priorities are: 1) Vascular assessment and repair if needed, 2) Reduction and spanning ex...
Answer the questions to see explanations
Click T (True) or F (False) for each option