sesamoiditis

noun
ses·​a·​moid·​itis | \ ˌses-ə-ˌmȯi-ˈdīt-əs How to pronounce sesamoiditis (audio) \

Medical Definition of sesamoiditis

1 : pain and inflammation of either of the two small sesamoid bones or surrounding tendons of the ball of the foot at the base of the big toe The pain is increased when the first metatarsophalangeal joint is dorsiflexed to its limit. However, the diagnosis of a sesamoid stress fracture should not be based on the above history and physical findings alone. Athletes with a sesamoiditis or a metatarsalgia can present with a similar symptom complex.— James S. Keene, The Journal of the American Medical Association, 11 July 1986
2 : inflammation of the navicular bone and adjacent structures in the horse

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