Baylor College of Medicine is one of a few orthopedic centers across the country participating in a clinical trial called PROGRESS IV, sponsored by Zimmer Biomet, investigating a device called the nSTRIDE® APS Kit for people who have osteoarthritis (OA) in one knee.

The study is designed to evaluate the safety and clinical effectiveness (pain and function associated with knee OA) of a protein solution using the investigational nSTRIDE APS Kit, which separates the different parts of a small sample of the patient's own blood for injection.


Patients must meet the following minimum criteria to be considered for the trial:

  • Have symptomatic OA in only one knee
  • Be between 21 and 80 years old
  • Be willing and able to comply with the trial procedures and visit schedules
  • Have a body mass index (BMI) less than or equal to 40 kg/m2
  • Have undergone at least one conservative OA treatment without satisfactory pain relief
  • Not have had recent intra-articular steroid injections (three months) or hyaluronic acid (HA) or other joint injections (six months) in the arthritic knee

If you are interested in the study, please contact Patricia Marino or Dr. Shybut.

Study Site: Baylor College of Medicine 
Study Doctor: Theodore Shybut, M.D.


Patricia (Patti) Marino prmarino@bcm.eduPhone 1: (713) 798-4516
IRB: h-41806




Feb 16, 2018