UMEM Educational Pearls

Category: Orthopedics

Title: Knee Injuries

Keywords: Knee Injury, ACL, dislocation (PubMed Search)

Posted: 1/5/2008 by Michael Bond, MD (Updated: 7/10/2020)
Click here to contact Michael Bond, MD

Some quick facts about Knee Injuries:

 

  • The most common cause of acute traumatic hemarthrosis of the knee is an anterior cruciate ligament tear.
    • Most patients with an ACL injury will give a history of immediate pain, disability, knee swelling and audible pop.
  • The most common ligament injuried in the knee is the medial collateral ligament.
  • Patella dislocations
    • Usually lateral dislocations and often spontaneous reduce.
    • Hyperextend the knee to make the reduction easier.
  • Dislocation of the knee:
    • Anterior is the most common and usually secondary to hyperextension
    • Popliteal artery injury is commonly seen and must be looked for.  Easy bedside test is Ankle Brachial Indexs.