Medial midfoot heel pain, notably with prolonged body weight bearing, could be due to tarsal tunnel syndrome, that is due to compression from the posterior tibial nerve. Sinus tarsi syndrome manifests as lateral midfoot heel pain and a feeling of instability, notably with enhanced exercise or walking on uneven surfaces. https://www.theorthopaedicandpainpractice.com/a-comprehensive-guide-to-treating-foot-heel-pain/