Stable vs Unstable
The ankle is a ring
Tibial plafond
Medial malleolus
Deltoid ligaments(medial lig.)
calcaneous
Lateral collateral ligaments
Lateral malleolus
Syndesmosis
Fracture of single part usually stable
Fracture > 1 part = unstable
Danis-Weber classification
Defines injury based on level of fibular fracture
A=below tibiotalar joint
No disruption of syndesmosis
Usually stable
B=at level of tibiotalar joint
Partial disruption of syndesmosis
C=above tibiotalar joint
Disrupts syndesmosis to level of fracture
unstable
THE MORE PROXIMAL THE FIBULAR # THE MORE SEVERE THE INJURY
Lauge-Hansen classification
Lateral Malleolar Fracture Danis-Weber A
Mechanism : Supination/adduction (inversion)
Mortise intact
Stable fracture(align normal)
Soft tissue swelling
Treatment : below knee cast
