Trapezium secondarium
Last revised by Hector Rivera-Melo
on 25 Jun 2021
Citation, DOI, disclosures and article data
Citation:
Tunchon D, Rivera-Melo H, Kang O, et al. Trapezium secondarium. Reference article, Radiopaedia.org (Accessed on 05 Dec 2024) https://doi.org/10.53347/rID-54800
Permalink:
rID:
54800
Article created:
29 Jul 2017,
David Tunchon
Disclosures:
At the time the article was created David Tunchon had no recorded disclosures.
View David Tunchon's current disclosures
Last revised:
25 Jun 2021,
Hector Rivera-Melo
Disclosures:
At the time the article was last revised Hector Rivera-Melo had no recorded disclosures.
View Hector Rivera-Melo's current disclosures
Revisions:
5 times, by
5 contributors -
see full revision history and disclosures
Systems:
Sections:
Synonyms:
- Trapezium secundarium
- Secondary trapezium
The trapezium secondarium (or trapezium secundarium or secondary trapezium) is an accessory ossicle of the wrist. It can be seen adjacent to the tubercle of the trapezium superomedially 1,2.
Embryology
According to Pfitzner, the trapezium secondarium is one of four potential secondary ossification centers lying around the primary ossification center of the trapezium that may remain as separated bones 4. The other sites include the epitrapezium adjacent to the scaphoid, the paratrapezium most lateral and the praetrapezium lying on the palmar surface of the trapezium 4.
Radiographic features
It may be visualized sitting between the 1st and 2nd bases of each respective metacarpal bone on lateral and oblique hand radiographs 3.
References
- 1. Timins ME. Osseous anatomic variants of the wrist: findings on MR imaging. AJR. American journal of roentgenology. 173 (2): 339-44. doi:10.2214/ajr.173.2.10430131 - Pubmed
- 2. Rushforth, A.F. (1949) A congenital abnormality of the trapezium and first metacarpal bone. J. Bone Joint Surg. (Br.) 31:543-546
- 3. Donna G. Blankenbaker, Kirkland W. Davis. Diagnostic Imaging: Musculoskeletal Trauma. ISBN: 9780323442954
- 4. A CONGENITAL ABNORMALITY OF THE TRAPEZIUM AND FIRST METACARPAL BONE. Bone & Joint Journal. 31-B (4): 543. Pubmed
Incoming Links
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