OPC Orthotics Written Practice Questions - OPC Orthotics Written Certification Examination Exam

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During a biomechanical assessment, a patient weighing 80 kg (approximately 800 N) is evaluated using a force plate. At 15% of the gait cycle (loading response), the ground reaction force (GRF) vector is equal to 800 N and is located 4 cm posterior to the knee joint axis in the sagittal plane. What is the magnitude and direction of the knee moment generated by this force?

32 Nm flexion moment 32 Nm extension moment 3.2 Nm flexion moment 3.2 Nm extension moment

Correct Answer:

32 Nm flexion moment

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