Case Reports
Exostosis-Like Intra-articular Periosteal Osteoblastoma: A Rare Case
Am J Orthop. 2010 June;39(6):E50-E53
Author and Disclosure Information
Mansour Abolghasemian, MD, Mitra Rezaie, MD, Abas Behgoo, MD, Tina Shoushtarizadeh, MD, and Mohammad Taghi Ghazavi, MD, FRCSC
Dr. Abolghasemian is Orthopaedic Surgeon, Division of Hip Surgery, Shafa Rehabilitation Hospital, Iran University of Medical Sciences, Tehran, Iran.
Dr. Rezaie is Pathology Resident, Iran University of Medical Sciences, Tehran, Iran.
Dr. Behgoo is Orthopaedic Surgeon, Division of Hip Surgery, Shafa Rehabilitation Hospital, Iran University of Medical Sciences, Tehran, Iran.
Dr. Shoushtarizadeh is Pathologist, Iran University of Medical Sciences, Tehran, Iran.
Dr. Ghazavi is Orthopaedic Surgeon, Division of Hip Surgery, Shafa Rehabilitation Hospital, Iran University of Medical Sciences, Tehran, Iran.
Osteoblastoma is a relatively rare benign bone tumor, most often located in the vertebral column or metaphysis of the long bones, particularly the femur and the tibia. Periosteal osteoblastoma is the least common type. Exostosis-like appearance is
not common even in periosteal osteoblastoma, a very rare type of this tumor. In addition, an intraarticular location is uncommon for osteoblastomas. Here we report the case of a 25-year-old man with intra-articular exostosis-like periosteal osteoblastoma of the hip that resulted in impingement and osteoarthritis.