title: Microendoscopic Excision of Osteoid Osteoma in the Pedicle of the Third Lumbar Vertebra.
abstract: We present a rare case of a patient who underwent complete microendoscopic excision of an osteoid osteoma, which induced radiculopathy without nerve root compression. A 20-year-old man presented severe right groin pain that was temporarily relieved by nonsteroidal anti-inflammatory drugs. A computed tomography (CT) scan showed typical features of a nidus located in the inferior cortex of the right L3 pedicle. We performed surgery using a posterior microendoscopic approach. We drilled vertically along the line of the cortex of the caudal pedicle using a high-speed drill. After identifying the tumor, en bloc resection of the nidus was achieved. Immediately after surgery, pain in the right groin disappeared. A CT scan showed that most of the right L3 pedicle remained. This minimally invasive technique preserves spinal structures, including the facet and pedicle, and is a viable option for the treatment of spinal osteoid osteomas located close to vital structures.
authors.affiliation: Department of Orthopaedic Surgery, Graduate School of Medical Science, Kanazawa University, Kanazawa, Japan.
authors.forename: Katsuhito
authors.initials: K
authors.lastname: Yoshioka
authors.affiliation: Department of Orthopaedic Surgery, Houju Memorial Hospital, Nomi, Japan.
authors.forename: Eizo
authors.initials: E
authors.lastname: Matsuda
authors.affiliation: Department of Orthopaedic Surgery, Graduate School of Medical Science, Kanazawa University, Kanazawa, Japan.
authors.forename: Hideki
authors.initials: H
authors.lastname: Murakami
authors.affiliation: Department of Orthopaedic Surgery, Graduate School of Medical Science, Kanazawa University, Kanazawa, Japan.
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Tsuchiya
keywords: Endoscopic surgery; Minimally invasive surgical procedure; Osteoid osteoma; Radiculopathy