Can pes planus cause knee problems?
Yes. Pes planus (flat feet) morphology with pronation causes rotational stress on the medial compartment of the knee leading to OA. In addition, the patella tracks laterally causing patellofemoral OA. Patients presenting with knee pain should have their foot morphology and gait analyzed. If pes planus is present, foot orthotics may help relieve the knee pain.