Presentation
Inversion injury 2 days ago
Patient Data
Transverse fracture of distal fibula / lateral malleolus at infrasyndesmotic location.
Soft tissue swelling at lateral malleolus.
Medial malleolus appears normal.
Ankle mortise is intact.
Suggestive of Weber A fracture.
Case Discussion
Weber A fracture is infrasyndesmotic fracture of distal fibula.
It is a transverse fracture due to the pull of the adduction force applied to a supinated foot.
This is an avulsion fracture due to stretch on the ligaments on the lateral side of ankle.
Almost always this avulsion fracture is seen as a horizontal line.
This is stage 1 of Weber A and it is a pull off type of fracture resulting in horizontal fracture of lateral malleolus. Stage 1 is the most common type of Weber A fracture.
Weber A stage 2 has in addition, an oblique or vertical fracture of medial malleolus seen with push off type injury resulting from the same mechanism of adduction on a supinated foot. Stage 2 is extremely rare.
So this is a Weber A stage 1 fracture.
Unable to process the form. Check for errors and try again.