These fractures are challenging to treat because the revision of the component with fracture fixation is difficult to achieve.
These fractures are classified by UCPF as V.34-B2.
Fall onto flexed knee.
There might be evidence of preceding pain and loss of function.
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.