A patient support for use with a foundation frame is disclosed. The foundation frame includes a first column and a second column. The patient support includes a base beam, a leg support, and a guide. The base beam is coupleable to the foundation frame to be supported by the first column and the second column. The leg support has a first end pivotably coupled to the base beam and a second end spaced apart from the first end. The, guide is coupled to the base beam and to the second end of the leg support. The guide is configured to guide the second end of the leg support along an arcuate path when the leg support pivots relative to the base beam.