What to be done next?
Extended curettage with allograft
Bone biopsy
Curettage
Extended curettage with autograft
The given image shows a lytic area in the lower end of femur which extends up to the joint. The findings show Giant cell tumor , the only tumour which goes till the joint. The treatment of choice - extended curettage with autograft. To confirm GCT, bone biopsy is done next as histology is diagnostic.