Knee pain and flat feet

Knee pain and flat feet, a study to explore an association!

http://www.ncbi.nlm.nih.gov/pubmed/21717597

Association of flat feet with knee pain and cartilage damage in older adults.

Abstract

OBJECTIVE:

To assess the cross-sectional relation of planus foot morphology to ipsilateral knee pain and compartment-specific knee cartilage damage in older adults.

METHODS:

In the Framingham Studies, we adapted the Arch Index to quantify standing foot type from foot recordings. We inquired about knee pain and read foot scans. We compared the chances of knee pain among the most flat feet to the chances among all other feet, and estimated chances within categories of increasing flat feet. Similar methods estimated the chances of cartilage damage in each knee compartment. We adjusted for age, sex, body mass index, and nonindependent observations.

RESULTS:

Among 1,903 participants (56% women, mean ± SD age 65 ± 9 years), 22% of knees were painful most days. Cartilage damage was identified in 45% of medial tibiofemoral (TF), 27% of lateral TF, 58% of medial patellofemoral (PF), and 42% of lateral PF compartments. Compared with other feet, the most flat feet had 1.3 times more chance of knee pain, and 1.4 times chance of medial cartilage damage. Chances of pain and medial cartilage damage increased across the board for all categories of increasing flat foot. There was no association between foot morphology and cartilage damage in other knee compartments.

Conclusion
Flat foot type is associated with frequent knee pain and medial TF cartilage damage in older adults. Knee pain and flat feet is associated.

insoles for foot pain
Flat feet and knee pain

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