Table 1 Categorization of failure modes according to Henderson [17]
Category | Type | Subgroup |
|---|---|---|
Mechanical | I. Soft tissue failure | A: instability due to tendon/muscle rupture B: aseptic wound dehiscence |
II. Aseptic loosening | A: <2 years after implantation B:>2 years after implantation | |
III. Structural failure | A: prosthetic failure B: periprosthetic fracture | |
Non-mechanical | IV. Periprosthetic infection | A: <2 years after implantation B:>2 years after implantation |
V. Tumor progression with contamination of prosthesis | A: soft tissue tumor B: bone tumor |