Resumo

MARTINEZ-MARTINEZ, F. et al. Translunate fracture-dislocation. Cir. plást. iberolatinoam. [online]. 2015, vol.41, n.4, pp.443-447. ISSN 1989-2055.  https://dx.doi.org/10.4321/S0376-78922015000400012.

We present the case of a 26-year-old male sportsman by profession, who suffers a radial transstyloid-translunate fracture-dislocation after a trauma during a sport practice. This is an uncommon injury that escapes from the typical injury patterns. After an urgent closed reduction, the patient undergoes surgery by osteosynthesis of the lunate fracture and scapholunate ligament repair, with a successful recovery. Carpal fracture-dislocations are severe injuries that may be associated with multiple patterns of ligamentous and bone injuries. Bain adds the translunate arc (lunate fracture) as a complement to the greater arc-lesser arc classification model of perilunate inestabilities from Johnson. This mechanism of translunate injury does not follow the pattern described by Mayfield, although it is a combination of such concept and the lunate fracture. In our clinical case, there was an involvement of the 3 arches: radial styloid fracture (greater arc), lunate fracture (translunate arc) and carpal ligaments fracture (lesser arc); this has not yet been studied biomechanically.

Palavras-chave : Lunate fracture; Carpal inestabilities; Translunate arc.

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