Medial midfoot heel pain, significantly with extended weight bearing, can be because of tarsal tunnel syndrome, and that is because of compression on the posterior tibial nerve. Sinus tarsi syndrome manifests as lateral midfoot heel pain and a sense of instability, specially with enhanced activity or walking on uneven surfaces. https://foot-pain-treatment55320.blazingblog.com/34164244/the-foot-heel-pain-treatment-diaries