RecruitingClinical trialImplementing a Group Physical Therapy Program for Veterans (GroupPT): Function QUERI 3.0Implementing Group Physical Therapy for Veterans with Knee Osteoarthritis (Group PT): Function QUERI 3.0 aims to compare two implementation approaches for implementing Group PT in 20 VA facilities using a type III effectiveness-implementation hybrid study framework and parallel cluster randomized trial (CRT) design.