Evaluating the Effectiveness of Clinical Practice Guideline Adherence for Patellofemoral Pain

Inclusion Criteria: * Active-duty Service member * Aged ≥18 years * Presence of unilateral or bilateral PFP based on the core criterion of peripatellar and/or retropatellar pain with reproduction of PFP by at least one activity that loads the patellofemoral joint during weight bearing on a flexed knee, such as prolonged sitting, kneeling, squatting, hopping, running, stair climbing, patellar palpation * Available to participate in physical therapy treatment within 6 weeks of initial enrollment Exclusion Criteria: * Presence of tibiofemoral OA based on imaging evidence in the electronic health records in the past year or self-report * History of patellar or intra-articular knee trauma (e.g., dislocation/fracture) or surgery * History of neurodegenerative conditions that may affect movement patterns (e.g., Multiple Sclerosis) * Meniscal or ligamentous pathologies within the past year based on imaging evidence of acute injury in the electronic health record or self-report * Quadriceps or patellar tendon injuries within the past year based on imaging evidence of acute injury in the electronic health record or self-report * Known pregnancy (pregnant females may be eligible for participation after end of pregnancy and medical clearance by a qualified and licensed healthcare provider) * Receipt of physical therapy care for PFP within the three months prior to enrollment * Known to be pending medical evaluation board, discharge from the military, scheduled deployment, or litigation for an injury at time of enrollment.