for the past 10 years or so, I get severe cracks in the same spot on my right foot in the summer only. The cracks are located on the ball of my right foot where my callus is the thickest, which I believe is because I had surgery on left foot when I was young and I have favored it out of habit putting extra pressure on my right foot. Ive tried sleeping with A&D ointment and socks on but it would always hurt when it would dry out. In the summer I weekly shave my feet with a callus shaver to stop it from cracking further cause I think the callus is the cause of the crack but Im running out of callus and it still finds a place to crack. Is it really the callus that is causing the cracking?