A Rare Case of Osteoblastoma of Calcaneum with Secondary Aneurysmal Cyst Like Changes and its Management- A Case Report

Background: Osteoblastoma is a rare bone forming neoplasm and it is very rare to present with secondary cystic changes that too in the heel bone. The incidence is <0.6 % among all and its prevalence is yet to be reported in our population. owing to its rare presentation the early diagnosis of Osteoblastoma of calcaneum with secondary aneurysmal cyst like changes are difficult and hence affects the outcome. Material: In this report we detailed the diagnostic methods and surgical management of osteoblastoma of calcaneum associated with secondary aneurysmal cyst like changes in a 12year old boy with 2 year follow up. Result: It shown that the expansile lytic lesion was healed at appropriate time period and ankle & subtalar range of movements were satisfactory with no limitation in inversion and eversion. Conclusion: Benign expansile bone tumors in heel bone are difficult to find in the literature. This study addresses the diagnostic modality, proper surgical management in terms of approach and using sandwich bone grafting technique to improve the long term functional outcome. Keywords: Osteoblastoma of calcaneum, Secondary aneurysmal cyst like changes, Curettage and bone grafting.