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Table 2 The categories for the revision hip replacement form (H2 form) and the revision knee replacement form (K2 form)

From: Validation of revision data for total hip and knee replacements undertaken at a high volume orthopaedic centre against data held on the National Joint Registry

Indication for revision—NJR categories for the revision hip replacement form (H2 form)

Indication for revision—NJR categories for the revision knee replacement form (K2 form)

Adverse soft tissue reaction to particulate debris

Aseptic loosening

Aseptic loosening

Component dissociation

Dislocation/subluxation

Dislocation/subluxation

Dissociation of the liner

Implant fracture

Head-socket mismatch

Infection

Implant fracture

Instability

Infection

Lysis

Lysis

Malalignment

Malalignment

Other

Other

Peri-prosthetic fracture

Peri-prosthetic fracture

Progressive arthritis to the remaining knee

Unexplained pain

Stiffness

Wear of acetabular component

Unexplained pain

 

Wear of the polyethylene component