Interphalangeal Sesamoid of the Hallux
Description
General
- Occurs on the plantar aspect of the interphalangeal joint of the first digit of the foot
- Embedded within the joint capsule
- Presence of ossified sesamoid may alter biomechanics, limit motion[3]
- One of the accessory bones of the foot and ankle
Epidemiology
- Prevalence estimated to be between 2% and 13%[4]
- Cadaveric studies identify a nodule in 73% of cases[5]
Imaging
- Best seen on AP radiographs of the foot or toes
Pathology
- Interposition in a dislocated interphalangeal joint can make it irreducible[6]
Clinical Significance
See Also
References
- ↑ Case courtesy of Servet Kahveci, Radiopaedia.org, rID: 85361
- ↑ Shin, Hye Young, et al. "Symptomatic hallucal interphalangeal sesamoid bones successfully treated with ultrasound-guided injection-a case report." The Korean Journal of Pain 26.2 (2013): 173-176.
- ↑ Roukis, Thomas S., and Jeffrey S. Hurless. "The hallucal interphalangeal sesamoid." The Journal of foot and ankle surgery 35.4 (1996): 303-308.
- ↑ Coskun, Nigar, et al. "Incidence of accessory ossicles and sesamoid bones in the feet: a radiographic study of the Turkish subjects." Surgical and radiologic anatomy 31 (2009): 19-24.
- ↑ Davies, M. B., and S. Dalal. "Gross anatomy of the interphalangeal joint of the great toe: implications for excision of plantar capsular accessory ossicles." Clinical Anatomy: The Official Journal of the American Association of Clinical Anatomists and the British Association of Clinical Anatomists 18.4 (2005): 239-244.
- ↑ Leung, H. B., and W. C. Wong. "Irreducible dislocation of the hallucal interphalangeal joint." Hong Kong Medical Journal 8.4 (2002): 295.