“…We currently use the term Muscle Pain Amenable to Injection (MPAI) to distinguish this treatment modality from the more common simple trigger-point injection technique performed currently by most physicians and physical therapists in practices addressing musculoskeletal pain. 4 Dr. Kraus' methods include a functional assessment, with the Kraus-Weber tests, of minimum strength and flexibility of key postural muscles, as well as muscular palpation with the patient prone and supine. Identifying the etiology of the functional muscle pain facilitates precise therapy, the success of which requires patient compliance with the tailored therapeutic exercise regimen that Kraus developed in the late 1940s at the Columbia-Presbyterian Hospital 1 and later successfully provided to 300,000 participants at the YMCA.…”