X-RTS
X-RTS (pronounced "exerts") is an acronym for "Cross-Reference Testing System" "X-RTS" is a registered trademark referring to testing devices and methodology. This system is designed by a clinician to meet the needs of other clinicians who perform functional capacity evaluations. The devices and methodology are intended to objectively document patient compliance during the evaluation of functional abilities, including dynamic lifting, dynamic pushing and pulling, and bilateral carrying.
The X-RTS approach was inspired, in part, by Gordon Waddell's classic research on "non-physical signs in low back pain" patients. In his landmark findings, Waddell proposed the concept of "distraction-based testing" that is "non-surprising." The clinician using X-RTS establishes a baseline milk crate or wooden box which contains unmarked steel weights. Data from the baseline tests are subsequently cross-referenced on the X-RTS devices.