An apparatus comprises an attachment mechanism being configured for removably joining to a radiolucent accessory side rail of a patient platform. A vertical base joint is joined to the attachment mechanism and is configured for rotating vertically. A fist locking mechanism fixedly maintains the vertical base joint at an adjusted vertical angle relative to a horizontal plane of the patient platform. A horizontal joint is joined to the vertical base joint and is configured for rotating horizontally. A second locking mechanism fixedly maintains the horizontal joint at an adjusted angle. A vertical end joint is configured for rotating vertically and for supporting a patients limb. A third locking mechanism fixedly maintains the vertical end joint at an adjusted vertical angle relative to a horizontal plane of the patient platform in which the patients limb is supported in a desired position for radiographic and magnetic medical imaging.
