Triquetral fracture

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Triquetral fracture
Other names: Triquetrum fracture
Triquetral avulsion fracture as seen on lateral X-ray of the wrist
SpecialtyHand surgery
SymptomsWrist pain and swelling[1][2]
ComplicationsStiffness, instability[3]
TypesDorsal cortical, body, palmer cortical[4]
Diagnostic methodX-rays[3]
Differential diagnosisLunate dislocation, pisiform fracture, trapezium fracture, hamate fracture[4]
TreatmentCasting, surgery[3][1]
PrognosisGenerally good[3]

Triquetral fracture is a break of the triquetral bone of the wrist.[3] Symptoms include pain in the wrist.[1] This is often worsened by bending the wrist forwards or backwards and swelling over the back of the wrist maybe present.[4][2] Associated injuries may include a perilunate dislocation.[4] Complications can include stiffness or instability of the wrist.[3]

It most commonly occurs as a result of a fall onto the hand or being pulled appart by an attached ligament.[3] Other causes may include a direct blow.[1] Diagnosis is generally based on wrist X-rays, though CT scaning can also be useful.[3] Types include dorsal cortical (most common), body, and palmer cortical.[4]

Treatment is generally by casting for 4 to 6 weeks.[3] If the peices are seperated, surgery maybe indicated.[1] Outcomes are generally good with dorsal cortical fractures, while in palmer cortical fractures it may be mixed.[3]

Triquetral fractures represent about 15% of breaks of bones within the wrist, making it the second or third most common after scaphoid and lunate fractures.[3][2][1] They were first described at least as early as 1933 by Thompson.[5]


  1. 1.0 1.1 1.2 1.3 1.4 1.5 Greenberg, Michael I. (2005). Greenberg's Text-atlas of Emergency Medicine. Lippincott Williams & Wilkins. p. 480. ISBN 978-0-7817-4586-4. Archived from the original on 2022-08-27. Retrieved 2022-08-25.
  2. 2.0 2.1 2.2 Radswiki, The. "Triquetral fracture | Radiology Reference Article |". Radiopaedia. Archived from the original on 26 June 2022. Retrieved 24 August 2022.
  3. 3.00 3.01 3.02 3.03 3.04 3.05 3.06 3.07 3.08 3.09 3.10 Guo, RC; Cardenas, JM; Wu, CH (April 2021). "Triquetral Fractures Overview". Current reviews in musculoskeletal medicine. 14 (2): 101–106. doi:10.1007/s12178-021-09692-w. PMID 33483875.
  4. 4.0 4.1 4.2 4.3 4.4 "Triquetrum Fracture - Hand - Orthobullets". Archived from the original on 24 March 2022. Retrieved 25 August 2022.
  5. Guermazi, Ali; Roemer, Frank W.; Crema, Michel D. (11 December 2015). Imaging in Sports-Specific Musculoskeletal Injuries. Springer. p. 199. ISBN 978-3-319-14307-1. Archived from the original on 27 August 2022. Retrieved 25 August 2022.

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