Facts about corns and calluses:
- Calluses and corns are very common, but the true incidence is unknown.
Continue to Clavus Symptoms
- Coughlin MJ: Common causes of pain in the forefoot in adults. J Bone Joint Surg Br 2000 Aug; 82(6): 781-90. 
- Singh D, Bentley G, Trevino SG: Callosities, corns, and calluses. BMJ 1996 Jun 1; 312(7043): 1403-6.