Since 1971, a cartilaginous sesamoid or nodule has been identified in the plantar ligament of the interphalangeal joint of the big toe in 29 of the 58 patients (50%) from whom spurs of the plantar medial aspect of the adjacent phalanges were removed because of painful callouses. It is felt that the firm mass of the cartiginous sesamoid may have contributed to the callous formation in many cases. These cartilaginous sesamoids have all been removed when found.
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References
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. BurmanM.S.LapidusP.W.The functional disturbances caused by the inconstant bones and sesamoids of the foot.Arch. Surg.22: (pp. 936–975), (1931).
