A middle-aged female present with lytic lesion in lower 1/3 of femur. Biopsy showed grooved nuclei and giant cells. No periosteal reaction seen. What is the confirmatory investigation for this case:-

Orthopaedics

A middle-aged female present with lytic lesion in lower 1/3 of femur. Biopsy showed grooved nuclei and giant cells. No periosteal reaction seen. What is the confirmatory investigation for this case:-

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 -