Association of Self-Reported Improvement After 4 Weeks and Outcomes After 52 Weeks Among Adolescents With Patellofemoral Pain and Osgood-Schlatter Disease

Self-reported improvement after 4 weeks of treatment was associated with better outcomes after 52 weeks among adolescents with PFP. This association was present only among adolescents with PFP, as almost all adolescents with OSD improved after 52 weeks, regardless of short-term results. Importantly, even among adolescents reporting no improvement after 4 weeks, a large proportion reported improvement after 52 weeks. This highlights the importance of following the rehabilitation program regardless of the short-term response.