Avulsion of Anterior Tibial Spine
MC in children
hyperextension of knee with internal rotation of tibia
Avulsion of Anterior Tibial Spine
50% occur from falling off a bicycle
MC fx of patella
Transverse 60% of time
Meniscal tear must
defect extend to the ARTICULAR surface
Segonds is
avulsion of the lateral tibial plateu associated in 75-100% of ACL tears
what is a Maisonneuve fx
spiral fx of the proximal 1/3 of the fibula, associated with medial malleolous fx
Fx of lateral malleolus occurs from
inversion
ankle stress views need
> 16 degrees of talar dome angulation
Asymmetrical lateral mortise spacing
3mm anterior translation
what is MC tarsal fx
Calcaneal
compressive forces
Use Boehler’s angle to determine
Boehler’s angle should NOT be less than
28 degrees
what is 2nd mc tarsal fx
Talus
Dancer’s/Jones fx
transverse fx at base of 5th metatarsal
Dancer’s/Jones fx results from
plantar flexion and inversion of foot
Avulsion of peroneus brevis tendon
Lisfranc dislocation is
tarsometatarsal dislocation, typically dorsally.
Occurs from a fall from heights
Lisfranc can occur with what disease
diabetes
Chopart’s dislocation occurs
midtarsal dislocation
RARE
foot displaced medially normally
