Study Design Case report and review of the literature. Objective A retro-odontoid mass is a
rare cause of cervical compression and myelopathy. The differential diagnosis includes the …

Objective To evaluate the effect of screw-rod fixation and selective axial loosening in the
treatment of atlantoaxial instability or dislocation (including reducible and irreducible) …

A 38-year-old man presented with progressive cervical myelopathy due to atlas hypoplasia
associated with non-traumatic retro-odontoid mass. The neuroimaging findings suggested …

Objective The aim of this study was to report an experience with 190 cases of os
odontoideum over 20 years. The management outcome following atlantoaxial fixation was …

Objective To elucidate the imaging manifestations of os odontoideum, establish the
diagnosis and guide surgical therapy. Methods Clinical and imaging data, including X-ray …

OBJECTIVE AND IMPORTANCE: Among masses in the craniovertebral junction causing
severe compression of the medulla and upper cervical cord, cases of retro-odontoid disc …

The authors report the case of a 35-year-old man who had polyarthritic affliction with
rheumatoid disease. He presented with complaints of quadriparesis that had progressed …

INTRODUCTION: We describe a patient diagnosed as suffering from a skull base
osteochondroma which affected the atlantooccipital joint and originated in the occipital …

Study Design. This is a report of a 63-year-old woman with a retrodental fibrocartilaginous
mass and myelopathy. Objective. To describe the pathophysiology of the retrodental …

BACKGROUND: Our clinical understanding of os odontoideum (OO) remains incomplete.
Congenital and traumatic causes have been proposed and advocated. Clinical …