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Table 1 Brumback Classification system for hip dislocation and femoral head fracture

From: Femoral neck fracture combined with anterior dislocation of the femoral head: injury mechanism and proposed novel classification

Type I

FRACTURE OF INFEROMEDIAL ASPECT OF FEMORAL HEAD

A

Minimal or no acetabular fracture, stable hip joint

B

Relevant acetabular fracture, unstable hip joint

Type II

FRACTURE OF SUPEROMEDIAL ASPECT OF FEMORAL HEAD

A

Minimal or no acetabular fracture, stable hip joint

B

Relevant acetabular fracture, unstable hip joint

Type III

HIP DISLOCATION WITH FEMORAL NECK FRACTURE

A

No femoral head fracture associated

B

Femoral head fracture associated

Type IV

ANTERIOR HIP DISLOCATION WITH FEMORAL HEAD FRACTURE

A

Indentation type

B

Transchondral shear type

Type V

CENTRAL HIP DISLOCATION WITH FEMORAL HEAD FRACTURE