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According to the 4th International Patellofemoral Pain Research Retreat recently published in British Journal of Sports Medicine, the core criterion required to define Patelofemoral Pain (PFP) syndrome is pain around or behind the patella, which is aggravated by at least one activity that loads the patellofemoral joint during weight bearing on a flexed knee (eg, squatting, stair ambulation, jogging/running, hopping/jumping).
Additional criteria (not essential):
- Crepitus or grinding sensation emanating from the patellofemoral joint during knee flexion movement
- Tenderness on patellar facet palpation
- Small effusion
- Pain on sitting, rising on sitting, or straightening the knee following sitting
PFP is common in young adolescents, with a prevalence of 7–28%, and incidence of 9.2%.
Stay tuned for recommendations on treatment and diagnosis.
References
Br J Sports Med 2016;50:839-843 doi:10.1136/bjsports-2016-096384