Posterior Hip Dislocations

Classification

Thompson and Epstein Classification of Posterior Hip Dislocation
Type	Description
I	with or without minor fracture
II	with fracture posterior acetabular rim
III	with comminution of actabular rim
IV	with fracture acetabular floor
V	with fracture of femoral head (subclassification by Pipkin)

Pipkin Classification of Posterior Hip Dislocation
Type	Description
I	dislocation with femoral fracture caudal to fovea centralis
II	dislocation with femoral fracture cephalad to fovea centralis
III	Type I or II + fracture of femoral neck
IV	Type I or II + fracture of acetabulum