We present a rare benign cartilaginous tumour i.e chondromyxoid fibroma of proximal tibia. A 10 yrs old girl presented with complaints of pain in the right leg since 6months. Radiograph showed well defined eccentric osteolytic lesion with sclerotic margins seen over the proximal tibial metaphysis. Biopsy showed features of chondromyxoid fibroma. Patient underwent curettage and autologous fibular stud graft with iliac crest cancellous bone graft with 4.5mm cortical screw fixation. Histologic examination of the excised tissue showed macrolobules with hypercellularity at the periphery and low cellular myxoid stroma at the centre of the lobule. Patient asked to come for serial follow up. At the most recent followup after 2yrs there is no clinical / radiological signs of recurrence