Idiopathic patellofemoral pain
Background: Idiopathic patellofemoral pain (iPFP) is a prevalent cause of anterior knee pain, particularly among young, athletic females. While the diagnosis is primarily clinical, the underlying pathophysiology remains complex, involving various functional impairments rather than structural defects. Effective management requires a comprehensive understanding of these multifactorial mechanisms to avoid unnecessary surgical intervention.
Objective: This article aims to synthesize current literature regarding the biomechanical and neurophysiological mechanisms of iPFP and to provide a structured, evidence-based approach to clinical examination and multidisciplinary management.
Key Points: Pathogenesis involves functional patellar maltracking, often characterized by increased lateral translation and tilt during weight-bearing flexion. Contributing factors include quadriceps imbalance, arthrogenic muscle inhibition, and dynamic knee valgus secondary to hip abductor weakness or subtalar joint dysfunction. Hamstring tightness and psychological factors, such as kinesiophobia, also influence symptom severity. Clinical evaluation should utilize dynamic tests, including the single-leg squat and balance tasks, to identify motor control deficits. Management is strictly non-surgical, prioritizing patient education, activity modification, and targeted rehabilitation. Evidence supports combining quadriceps strengthening with proximal hip stabilization. Adjunctive therapies, such as medially directed patellar taping and foot orthoses, may provide short-term symptomatic relief, whereas invasive procedures and pharmacological interventions show limited efficacy in the absence of structural pathology.
Conclusion: Idiopathic patellofemoral pain is a functional disorder managed through a multimodal, non-operative approach. Successful outcomes depend on patient education, load management, and corrective exercise programs addressing both local knee deficits and proximal hip mechanics to facilitate a return to activity and prevent recurrence.
