The technique was deemed adequate (visualization to C7-T1) in only two patients (4%). One of these two patients had an unstable type II odontoid fracture that was missed by axial CT and seen only ...

Effect of C7-T1 Extensional Posterior Transpedicle Osteotomy on Mobility and Quality of Life in Patients with Ankylosing Spondylitis Complicated with Lumbar Kyphosis and Related Factors.