Os centrale carpi
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At the time the article was created David Tunchon had no recorded disclosures.
View David Tunchon's current disclosuresAt the time the article was last revised Magdalena Chmiel-Nowak had no recorded disclosures.
View Magdalena Chmiel-Nowak's current disclosuresThe os centrale carpi is an accessory ossicle of the wrist positioned dorsally between the scaphoid, the trapezoid and the capitate bones 1. As with most other accessory ossicles of the wrist, the os centrale carpi is a rare finding on imaging and is, in the majority of cases, an asymptomatic anatomic variant.
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Epidemiology
It has an incidence of 0.3-1.6% 2.
Development
It is thought to represent a separate ossification center that is seen in the embryo at 6 weeks, that then normally fuses with the distal ulnar portion of the scaphoid at 8 weeks 2.
Differential diagnosis
- soft tissue calcification
- bipartite scaphoid
- non-union of scaphoid fracture 3
Related pathology
Os centrale carpi have been observed to cause symptoms such as intermittent pain, clicking and crepitus due to its mobility in the carpus. Osteonecrosis of the os centrale carpi has been reported after trauma 1.
References
- 1. Madeira G, Napoli A, Moline T, Martin E, Oria S, Bruno C. (2013, Sep 26). Osteonecrosis of the os centrale carpi, {Online}. URL: http://www.eurorad.org/case.php?id=10881 DOI: 10.1594/EURORAD/CASE.10881
- 2. Hong Soo Chung, Eun Soo Park and Seung Min Nam. “Bipartite os Centrale Carpi in a Patient with the First Metacarpal Bone Fracture.” Archives of Plastic Surgery. The Korean Society of Plastic and Reconstructive Surgeons, January 2014. [Link]
- 3. Yang Z Y, L A Gilula and K Jonsson. “Os centrale carpi simulating a scaphoid waist fracture.” Journal of hand surgery (Edinburgh, Scotland). U.S. National Library of Medicine, December 1994. [Link]
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