an apparatus for mounting an anatomical positioner on a patient care platform includes a clamping mechanism for allowing an operator to quickly and securely join the apparatus to the patient care platform . guide rails are joined to the clamping mechanism . the guide rails extend away from the patient care platform . slides slidably join to the guide rails to allow the operator to position the anatomical positioner to impart a force on a patient on the patient care platform . the slides include brakes for at least stopping movement in a direction away from the patient care platform , and brake releases for releasing the brakes . supports join to the slides for supporting the anatomical positioner . the supports have restraints for allowing the operator to quickly secure and adjust the anatomical positioner , whereby the anatomical positioner is positioned by the operator to impart the force on the patient and locked in place .