**7.1. T-shaped acetabular fractures**

T-shaped fracture is a combination of transverse acetabular fracture with vertical extension into obturator ring distrupting it. Sometimes there is extension of fracture into pubic ramus and ischim. The vertical fracture component differentiates this fracture from transverse fracture. But the superior extension of the fracture does not involve the iliac wing which is an important point to differentiate this fracture from both column fracture. On the radiograph, both iliopectineal and ilioischial lines will be disrupted *in* both Judet views. On the CT scan, the transverse component will be seen in sagittal plane of axial image.

**7.5. Posterior column with posterior wall fracture**

Type A-Fracture involving single wall or column.

fractures based on its severity.

fracture).

fracture).

concluded like this:

terior wall disruption).

1. Bicolumn Fracture (Spur Sign).

disruption).

iliac wing.

wall fracture and iliac oblique view shows posterior column fracture.

A. Acetabular fracture with intact obturator ring. The possibilities are:

**3.** Transverse fracture (Both iliopectineal and ilioischial lines disrupted).

**2.** Posterior wall fracture (posterior wall disruption).

B. Acetabular fractures with obturator ring disrupted are:

**1.** Anterior column fracture (iliopectineal line disruption).

**3.** Posterior column fracture (Ilioischial line disruption).

AO comprehensive classification of the fractures acetabulum.

**5.** T-shaped fracture (both iliopectineal and ilioischial line disruption).

The fracture line will extend from the sciatic notch to the obturator ring through the cotyloid fossa. The AP view shows disruption of ilioischial line. The obturator view shows posterior

Clinical and Radiological Assessment of Acetabular Fracture

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Comprehensive classification has been developed to standardize the nomenclature worldwide. An alpha-numeric classification system was developed by AO group for acetabular

Type B-Fracture involving both anterior and posterior columns (T-type and transverse

Type C-Fracture involving both anterior and posterior columns, but all articular segments including the roof are detached from *the* remaining segment of intact ilium (Both column

The evaluation and classification of acetabular fractures based on Judet and Letournel can be

**1.** Anterior wall fracture (iliopectineal line alone disrupted with anterior wall disruption).

**4.** Transverse with posterior wall fracture (both iliopectineal and ilioischial lines with pos-

**2.** Anterior column with posterior hemitransverse (both iliopectineal and ilioischial line

**4.** Posterior column with posterior wall fracture (Ilioischial and posterior wall disruption).

C. Acetabular fracture with obturator foramen disruption with fracture line extending to the
