| The Vancouver classification is based on fracture location and implant stability |
| Type A the fracture involves the trochanteric region |
| Type B the fracture is around or just distal to the femoral stem |
| B1 the femoral implant is well fixed |
| B2 - the femoral implant is loose but the remaining bone stock is good |
| B3 severe bone stock loss in the presence of a loose implant. |
| Type C the fracture is so far below the stem that the treatment is independent of the hip replacement |
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