Danis then Weber described a classification of ankle fractures that involved the distal fibula. The type of fracture can help to determine the appropriate management.
Parameters:
(1) location of fracture in fibula
(2) orientation of fracture line
(3) syndesmotic ligament status
(4) stability of fracture
(5) other findings
Parameters
Type A
Type B
Type C
location of fracture
level of tibial plafond or distal to it
level of distal tibio-fibular joint; starts at plafond and travels proximally
proximal to distal tibio-fibular joint
orientation of fracture line
transverse
spiral oblique
syndesomotic ligament
intact
variable disruption
completely disrupted
stability
stable
variable stability
unstable
other
deltoid ligament intact
variable medial malleolus fracture or deltoid ligament disruption
interosseous membrane ruptured from level of tibial plafond proximally to fibula fracture; medial malleolus fracture or deltoid ligament disruption
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