Tehran University of Medical Sciences Journal of Orthopedic and Spine Trauma 2538-2330 3 1 2017 02 22 97 97 Mir Bahram Safari Assistant Professor of Orthopedics Department, Imam Khomeini Hospital, Urmia University of Medical Sciences, Urmia, IR Iran Ali Tabrizi Assistant Professor of Orthopedics Department, Imam Khomeini Hospital, Urmia University of Medical Sciences, Urmia, IR Iran Ebrahim Hassani Associated Professor of Anesthesiology, Imam Khomeini Hospital, Urmia University of Medical Sciences, Urmia, IR Iran Hossein Akbari Aghdam Assistant Professor of Orthopedic, Isfahan University of Medical Sciences, Isfahan, IR Iran Mohammad Javad Shariyate Residents of Orthopedics Surgery Department, Imam Khomeini Hospital, Urmia University of Medical Sciences, Urmia, IR Iran 2019 07 18 Osteoid Osteoma is the most common benign bone tumor often observed in long bones. Ribs involvement is very rare. In spinal involvement, it usually can cause painful scoliosis often seen in posterior component of spinal vertebral. A 15 year-old female with painful scoliosis, whose brace treatment was unsuccessful, is presented. In imaging investigations, her CT scan showed lytic lesions in the posterior of the seventh rib. She had a 30-degree painful scoliosis with right concave curve. Posterior part of the rib containing tumoral lesion was removed. Histopathological investigations showed a woven bone. Osteoid Osteoma was confirmed and the patient’s pain was resolved several days after the surgery. Follow-up in 3 month after the surgery showed that the curve of spinal deformity was completely resolved. Rib osteoid osteoma can cause painful scoliosis in young people, and surgical excision can be a successful treatment. It seems that application of brace had no impact on reducing the patient’s symptoms. https://jost.tums.ac.ir/index.php/jost/article/view/97 https://jost.tums.ac.ir/index.php/jost/article/download/97/97