Fig. 5.

An alternative to a Jackson table is the Mizuho OSI Wilson frame which bends the trunk forward to ease surgical exposure. Depicted here is a Wilson frame which affords free suspension of the abdominal structures, however is limited by the width of the aperture, which may be too narrow, as well as height. Difficulties may also arise while positioning large patients with short necks due to inability to achieve a neutral neck position. Ultimately the choice of spinal table in large patients is a compromise between spinal alignment needs and patient safety.