| Ireland AJ et al, 1998, UK | 427 consecutive patients who attended with acute trauma requiring cervical spine radiographs. 60 patients required additional swimmers view. 62 required additional paired supine oblique views. | Two phase prospective study | Able to visualise the vertebral bodies and posterior elements of the cervicothoracic junction | 37% of the swimmers group and 38% of the supine oblique group were judged satisfactory. When vertebral bodies not shown adequately, 70% of supine obliques and 37% swimmers showed posterior elements adequately | 9 patients from supine oblique group lost, therefore not included in calculations |