Arthroscopic management of Juxta-articular chondroblastoma with bone substitutes - A case report.

Chondroblastoma, a rare benign bone tumour arising from the epiphysis, accounts for approximately 1% of all primary bone tumours and is known to be locally aggressive with potential for metastases and local recurrence. Open surgical curettage is associated with high risk of recurrence and potential for damage to the physis resulting in growth disturbances. We report a 14-year-old girl with chondroblastoma involving the distal femoral epiphysis in whom an arthroscopic approach was employed for thorough curettage of the lesion under direct vision followed by cavity management using bone graft substitute. At seven years follow-up she is asymptomatic, has normal knee function and her radiographs have shown good osteointegration of the synthetic graft with no evidence of recurrence. By combining the principles of intra-articular and endosteal arthroscopy in select patients, both tumour excision and cavity management can be done arthroscopically.