40 years patient having arthritis of PIP and DIP along with a carpometacarpal joint of the thumb and sparing of the wrist and metacarpophalangeal joint, most likely diagnosis is –

Orthopaedics

40 years patient having arthritis of PIP and DIP along with a carpometacarpal joint of the thumb and sparing of the wrist and metacarpophalangeal joint, most likely diagnosis is –

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 -