Implementing a Group Physical Therapy Program for Veterans (GroupPT): Function QUERI 3.0

Inclusion Criteria: Sites are eligible to participate if they have: * 2 outpatient PT clinicians (one primary and one back-up) for delivering Group PT * space to conduct group sessions (if delivering Group PT in person) or ability to conduct visits via telehealth (video) Patients will be eligible for Group PT if they have a clinician diagnosis of symptomatic knee OA. Exclusion Criteria: * Site will be ineligible to participate if they are already conducting a group physical therapy class for patients with knee OA. * Patients will be ineligible for Group PT if they have a substantial fall risk or co-occurring health conditions that would make participation in a group exercise class unsafe.