The palmar one-half of the foot is palmar to the frontal or dorsal plane that divides the foot into approximately dorsal and palmar halves. The term “heels” simply refers to the palmar-most portion of the foot. As befits such a vague description, the heels are arbitrarily determined to extend palmarly from their junction with the quarters. The heels include the angles of the sole, the inflexion of the wall, and the bulbs as well as all the tissues that encase by them (Fig. 1); however, for the clinician, the definition of what structures constitute the heel is not usually derived from an anatomy book. Rather, it is defined by those structures that are desensitized with a palmar digital nerve block, because the gamut of injuries that are identified in this manner constitute the causes of “heel pain.”
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