Abstract: To facilitate certain spinal surgery requiring the patient to be in a prone sitting position, a simplified and comparatively inexpensive support attachment for operating tables is provided having a greater range of adjustments and requiring fewer parts. The attachment consists of two support rods held in clamps on opposite sides of the table and engaging two like clamps on opposite sides of a padded support panel for the buttocks and upper thigh region of the patient. The support panel is held in spaced relationship to one end of the table.