title: Navigated Pin-Point Approach to Osteoid Osteoma Adjacent to the Facet Joint of Spine.
abstract: Osteoid osteoma (OO) is a benign osteoblastic tumor. Its curative treatment is complete removal of the nidus, where intraoperative localization of the nidus governs clinical results. However, treatment can be difficult since the lesion is often invisible over the bony surface. Accordingly, establishment of an ideal less invasive surgical strategy for spinal OO remains yet unsettled. We illustrate the efficacy of a computed tomography (CT)-based navigation system in excising OO located adjacent to the facet joint of spine. In our 2 cases, complete and pin-point removal of the nidus located close to the facet joint was successfully achieved, without excessive removal of the bone potentially leading to spinal instability and possible damage of nearby neurovascular structures. We advocate a less invasive approach to spinal OO, particularly in an environment with an available CT-based navigation system.
authors.affiliation: Department of Orthopaedic Surgery, Shiga University of Medical Sciencea, Otsu, Japan.
authors.forename: Kanji
authors.initials: K
authors.lastname: Mori
authors.affiliation: Department of Orthopedic Surgery, Osaka Medical College, Osaka, Japan.
authors.forename: Masashi
authors.initials: M
authors.lastname: Neo
authors.affiliation: Department of Orthopaedic Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan.
authors.forename: Mitsuru
authors.initials: M
authors.lastname: Takemoto
authors.affiliation: Department of Orthopaedic Surgery, Shiga University of Medical Sciencea, Otsu, Japan.
authors.forename: Kazuya
authors.initials: K
authors.lastname: Nishizawa
authors.affiliation: Department of Orthopaedic Surgery, Shiga University of Medical Sciencea, Otsu, Japan.
authors.forename: Shinji
authors.initials: S
authors.lastname: Imai
keywords: Computed tomography-based computer navigation system; Less invasive; Osteoid osteoma; Spine