A patient of 45 yrs old Having ahritis with involvolvement of PIP 4 DIP and 9 MCP and sparing of wrist and ankle diagnosis ?

Orthopaedics

A patient of 45 yrs old Having ahritis with involvolvement of PIP 4 DIP and 9 MCP and sparing of wrist and ankle diagnosis ?

What is the use of the given instrument:

Which fracture results in the given deformity?

Positive pivot shift test in knee is because of injury to -