Radiographic studies of cervical spine motion in normal subjects: flexion and hyperextension.
D000328:Adult; D001269:Atlanto-Occipital Joint / Q000502:physiology; D002574:Cervical Vertebrae / Q000502:physiology*; D006801:Humans; D007403:Intervertebral Disc / Q000502:physiology; D008297:Male; D009068:Movement; D011859:Radiography; D013131:Spine / Q000502:physiology*