Accessory Ossicles and Sesamoid Bones Spectrum of Pathology and Imaging Hallux Sesamoids

Description: The hallux sesamoids can be associated with acute or stress fractures. Although much less common than stress fractures, avascular necrosis of the hallux sesamoid bones should be considered in the differential diagnosis of persistent forefoot pain. The tibial sesamoid is more likely to fracture than the fibular sesamoid because of weight-bearing mechanics. Compared with a fractured sesamoid, a bipartite bone is usually larger and has smooth margins.
Dr. Kalantari; Dr. Seeger; Dr. Chow; Dr. Motamedi Applied Radiology. 2007;36(10):28-37