Post-operative regression of retro-odontoid pseudotumors treated with and without fusion

摘要

Purpose Retro-odontoid pseudotumor is common in elderly people and is a cause of cervical myelopathy. The goal of the study was to investigate surgical procedures, outcomes, and post-operative spontaneous regression of posterior cervical retro-odontoid pseudotumors. Methods The subjects were 29 patients who underwent surgery for myelopathy due to a retro-odontoid pseudotumor around the craniocervical region at 9 facilities and were followed-up for an average of 54?months (range 12–96?months). Data were collected in a multicenter review of a retrospective database. Comparisons were performed between cases treated with and without fusion. Results The JOA recovery rate at final follow-up did not differ significantly between the fusion ( n ?=?17, including all 15 patients with atlantoaxial subluxation) and non-fusion ( n ?=?12) groups. However, pseudotumor regression was significantly more frequent in the fusion group (100% vs. 42%, p ?