图示足畸形为拇囊炎，表现为MP关节隆起。畸形使行走更困难，且要是拇囊炎使鞋不合适还可能产生厚胼胝体或溃疡形成。这种损害可通过外科矫治减弱。
The deformity of the foot shown here is known as a "bunion" and represents protrusion of the MP joint. Such a deformity makes walking more difficult and can produce a thick callus or ulceration when the bunion makes shoes ill-fitting. This lesion can be lessened by surgical correction.