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    Ankle Fracture/dislocation

    Ankle Fracture/dislocation is a topic covered in the 5-Minute Emergency Consult.

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    Basics

    Description

    Common mechanisms and injury patterns of the ankle:
    • Mechanism of injury:
      • Inversion injury: Lateral ankle distraction and medial ankle compression
        • Avulsion fracture of the lateral malleolus
        • Oblique fracture of the medial malleolus
      • Eversion injury: Medial ankle distraction and lateral ankle compression
        • Avulsion fracture of medial malleolus
        • Oblique fracture of the fibula
      • External rotation injury:
        • Disruption of the tibiofibular syndesmosis, or a fibular fracture above the plafond
        • Anterior or posterior tibial fracture with separation of the distal tibia and fibula (unstable fracture)
      • Inversion and external rotation (Maisonneuve fracture):
        • Medial malleolus avulsion fracture or deltoid ligament tear
        • Disruption of the tibiofibular syndesmosis
        • Oblique fracture of the proximal fibula
      • Inversion and dorsiflexion (snowboarders’ fracture):
        • Fracture of the lateral process of the talus
    • Epidemiology
      • Most ankle fractures are malleolar
      • Common in young male and 50–70 yr old female
      • Associated with cigarette use and high BMI

    Pediatric Considerations
    • Ankle fractures in children often involve the physis (growth plate):
      • May result in angular deformity from growth plate injury
      • Associated with sports requiring sudden changes in direction and obese children
      • In children <10 yr old, growth plate is weaker than epiphysis
    • Tillaux fracture: Salter–Harris type III injury of the anterolateral tibial epiphysis external rotation of the foot
    • Triplane fracture: Uncommon fracture of distal tibia with fracture lines in 3 distinct planes (coronal, transverse, sagittal)

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    Citation

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    TY - ELEC T1 - Ankle Fracture/dislocation ID - 307690 ED - Barkin,Adam Z, ED - Barkin,Roger M, ED - Hayden,Stephen R, ED - Rosen,Peter, ED - Schaider,Jeffrey J, ED - Shayne,Philip, ED - Wolfe,Richard E, BT - 5-Minute Emergency Consult UR - https://emergency.unboundmedicine.com/emergency/view/5-Minute_Emergency_Consult/307690/all/Ankle_Fracture_dislocation PB - Lippincott Williams & Wilkins ET - 5 DB - Emergency Central DP - Unbound Medicine ER -