Klippel-Feil syndrome is an uncommon alteration (1:40 000 births), mainly affecting the cervical spine.1 The classic clinical triad described by Klippel and Feil in 1912—short neck, low dorsal hairline, and restricted neck mobility—is the result of the fusion of a variable number of cervical vertebrae, sometimes reducing their number, and cervical spina bifida.2 Extraosseus changes,3 hemivertebra, vertebral body clefts, and thoracolumbar abnormalities,4 are sometimes seen.

In a prehispanic ossuary containing remains of at least 121 subjects in the island of El Hierro (Canary Islands), we …