En Bloc Resection of Cervical Spine Osteoid Osteoma With O-Arm-Assisted 3D Navigation: A Case Report.

CASE: A 22-year-old man presented with long-standing, progressive neck pain of unknown etiology. Investigation revealed a cervical spine osteoid osteoma affecting the right C4-5 facet joint. He underwent minimally invasive en bloc resection with O-arm-assisted 3-dimensional navigation without introducing iatrogenic spinal instability. Symptoms resolved after surgery, without recurrence or instability at the 2-year follow-up. CONCLUSION: Cervical spine osteoid osteoma is a tumor that presents diagnostic and therapeutic challenges. Achieving precise, complete resection of the tumor with a minimally invasive approach while avoiding spinal instrumentation and arthrodesis is paramount to excellent surgical outcomes.