Fracture around a loose tibial component with good bone stock
General considerations
Commonly occur around the tibial component stem, where loosening has caused additional stress.
These fractures are classified by UCPF as V.4-B2.
Etiology
A simple fall or fracture with minimal or no trauma.
Clinical signs
- Preceding pain and knee disfunction
- After injury pain, swelling and deformity
Imaging
Plain X-rays remain the first line of investigation.
CT scan can be used to assess the size and position of fragments, implant stability, and bone stock.
Comparison with previous X-rays is useful.
