1. Asymmetric wear: Uneven force on the knees can cause leg length discrepancy and spinal deformities. Using insoles or shoe lifts can help even out the force.

2. Outer side wear on big toe: Hallux valgus, a foot deformity, can cause this. It can be managed by wearing roomy toe box shoes and avoiding prolonged sitting.

3. Inner side wear on sole: This suggests flat feet, where the medial arch collapses. Flat feet can lead to various issues like bow legs, knee pain, joint degeneration, and lumbar spine discomfort.

4. Outer side wear on sole: This indicates high arches. High arches can cause joint sprains, injuries, arthritis, bone pain when sitting or standing, and even bow legs