The Alliance for Physician Certification & Advancement (APCA) is a credentialing organization that awards the RMSK (Registered in Musculoskeletal) credential to physicians and advanced practice providers competent in musculoskeletal ultrasound. APCA focuses specifically on clinician-performed ultrasound, distinguishing its credentials from sonographer-focused organizations like ARDMS. APCA credentials are relevant for physiatrists, sports medicine physicians, rheumatologists, and orthopedic surgeons who perform point-of-care MSK ultrasound.
Examination: APCA’s flagship examination is the RMSK. The credentialing process includes verification of training, clinical experience documentation, and a written examination covering MSK ultrasound physics, normal anatomy, pathology, and guided procedure technique.
Distinguished from: ARDMS — credentialing body for sonographers; APCA specifically targets clinician-performed ultrasound