Academy of Orthopaedic Physical Therapy

American Physical Therapy Association (APTA)

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APTA Members, Earn the Registered in Musculoskeletal (RMSK) Sonography Certification

Many physical therapists are increasingly choosing ultrasound imaging to enhance their clinical assessment and reasoning skills. Many are also electing to pursue credentials to validate their skill level to other professionals, the public, and to payers. By earning the Registered in Musculoskeletal (RMSK) sonography certification, physical therapists gain a critical edge in promoting themselves as preeminent practitioners in musculoskeletal sonography. 

  1. Apply: Review the RMSK Certification Process, the Eligibility Requirements and then log in to MY APCA to apply. There are two application periods each year and two corresponding examinations. Please refer to the linked page below for specific information.
  2. Prepare: Review the Content Outline and register for an online Practice Examination.
  3. Schedule: After your application is approved, you can schedule the computer-based examination. Find a convenient Pearson Vue location near you to reserve your seat once your application is approved.

All relevant information is available at:

If you have any questions, please contact the APCA Customer Care department via email at or call 1-800-943-1709 ext. 1 Monday through Friday between 9:00am and 4:00pm ET.


Academy of Orthopaedic Physical Therapy
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