A patient presented with pain in his ankle. X-ray was done which shows osteolytic lesion with sclerotic rim. HPE findings are attached. What is your diagnosis?

Orthopaedics

A patient presented with pain in his ankle. X-ray was done which shows osteolytic lesion with sclerotic rim. HPE findings are attached. What is your 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 -