History: trauma, pain
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Answer: Volar Barton’s fracture (aka reverse Barton’s fracture)
The classic Barton’s fracture is an intra-articular fracture of the distal radius which only involves the dorsal aspect of the radius (typically with a large displace fragment). This is a case where the volar aspect of the distal radius is involved and thus it is termed a “volar” Barton’s or reverse Barton’s fracture.
The importance is that as you can imagine, stable relocation of the carpus may be difficult to impossible.