“…The condition, also known as diaphyseal aclasia, hereditary multiple exostosis, and hereditary multiple enchondromatosis, is characterized by multiple cartilage‐capped bony outgrowths. The disease usually involves the long bones, scapulae, pelvic bones, and, rarely, the axial skeleton [2‐7]. In previous reports, authors have described how HMO can also affect the spine, most commonly the external part of the lamina [1,3,4,8,9].…”