This pattern combines a transverse component with a stem which exits either through the obturator ring or - in unusual cases - at various levels through the ischium. The downward limb of the T can be highly variable in its orientation.
Fractures in this group may also include a posterior wall component.
In contrast to the pure transverse fracture, the posterior and anterior column fractures frequently do not share a common orientation.
Further details on T-type fractures are provided in section Characteristics of associated fracture types.
A summary of diagnosing the fracture classification based on x-ray and CT images is presented in section Patient assessment.
The section Radiology of the intact acetabulum provides explanation of the radiologic landmarks.
The section Characteristics of associated fracture types provides further information on the radiology of T-type fractures.