Subjects with Patellofemoral Pain Syndrome show muscle weakness and lower load plantar – Case Report

Abstract

Introduction: Patellofemoral pain syndrome (PPS) is characterized as diffuse pain in the anterior knee. Objective: To evaluate the distribution of plantar pressure during two functional activities: up and down stairs, as well as torque and work of the flexors and extensors of the knee in one subject with and one without PPS. Method: An evaluation of the plantar pressure distribution during two functional activities: up and down stairs and isokinetic assessment of knee flexors and extensors, and intensity of pain before and after each activity was conducted. Results: The subject with PPS had lower contact time and lower values for the pressure-time integral, as well as lower peak torque and work of the flexors and extensors muscles of the knee. Conclusion: The PPS has led to reducing the load on the affected limb to climb and descend stairs as well as weakness of the flexors and extensors of the knee.