Table 2 Indications for revision and classification of bony defects

Characteristics

Aseptic loosening

21

Prosthetic joint infection

11

Recurrent dislocation

3

Failed dynamic hip screw fixation of previous neck of femur fracture

3

Failed Birmingham hip resurfacing ± pseudotumour

5

Metastatic disease

2

Acetabular erosion from previous hemiarthroplasty

1

Squeaking ceramic-on-ceramic articulation

1

Native hip joint dislocation

1

Broken cemented stem + acetabular osteolysis

1

Neck of femur fracture with arthritic hip

1

Peri-prosthetic fracture

8

Vancouver B2

6

Vancouver C

1

Acetabular fractures

1

Paprosky classification 

I

21

IIA

19

IIB

3

IIC

9

IIIA

4

IIIB

3