Northwestern University Feinberg School of Medicine

Orthopedic Teaching

Leg/Knee Case 5 Background

Anterior Knee Dislocation


Background

Knee dislocations are uncommon but limb threatening injuries due to the associated risk for popliteal artery injury (approximately 20%). About 50% of these injuries reportedly reduce spontaneously prior to presenting to the ED, so extra caution must be taken not to miss the diagnosis in these patients because the vascular injury risk is still present.