The name which heads this article is a rather unfortunate one, as it is not at all descriptive or distinctive. All pain referred to the plantar surface of the heel is not due to this condition.
Bradford and Lovett say: "This is a condition in which there is a tender and painful area under the middle of the heel." Whitman describes it with calcaneobursitis. Under painful heel he includes all pain referred to the botom of the heel. When the pain is clearly localized he says: "The cause of the symptoms in such cases may be an inflamed bursa lying between the periosteum and the fatty tissue of the heel." Walsham and Hughes do not mention the subject in "Deformities of the Human Foot." Nor does Keetley refer to it in his "Orthopedic Surgery." The French surgeons, however, have recognized this condition, and Duplay has recommended an operation which is
NTJTT JJ. PAINFUL HEEL, WITH A DEMONSTRATION OF A THEORY AS TO A MECHANICAL CAUSE.. JAMA. 1907;XLVIII(3):224–225. doi:10.1001/jama.1907.25220290040002c