Table 2.

Radiological characteristics of the horizontal shear fractures

Radiological feature	Number of acetabula
Horizontal shear
Displaced (≥ 2 mm translation)	9
Undisplaced (0–1 mm translation)	3
Transverse fracture pattern sub-type
Infratectal (62B1.1)	0
Juxtatectal (62B1.2)	7
Transtectal (62B1.3)	5
Comminution
Comminuted	10
Not-comminuted	2
Posterior wall
Fractured	5a
Intact	7
Fracture relation to ischial spine
Above	8
Through	2
Below	2

^aBilateral in one patient, unilateral in three patients