Illustration showing foot before and after orthotic correction.
Relationship between flat feet and knee symptoms
The feet always need to be assessed during an evaluation of the knee.
With flat feet (pes planus or foot pronation), the lower leg is forced into internal rotation, and the stress is relayed to the knee and the kneecap.
...among older adults, planus foot morphology is associated with a moderately increased prevalence of frequent knee pain and medial tibiofemoral cartilage damage...."
Orthotics and pes planus
A visit to an orthotist should determine whether a corrective shoe insert is likely to help with any secondary knee symptoms.
....Pes planus is a physical problem and the arch height of each individual is different....."
....the mechanical consequences of flat feet are often correctable using foot orthoses....."