Volar Barton (Palmar rim dislocation) is a palmar rim fracture of distal radius. The most common cause of this type of fracture is a drop on an outstretched hand.
It is due to palmar tensile stress and dorsal shear stress and is usually combined with Radial styloid fracture.
Loss of wrist movements
Palmar flexion is grossly restricted and painful
Palmar rim of distal radial articular surface is displaced dorsally. Proximally and posteriorly and may be associated with dorsal subluxation of the wrist.
Reduction is simple, but retention is difficult. Long arm cast is used.
If reduction does not remain satisfactorily with the wrist in neutral or slight palmar flexion, fixation with K-wire, external fixators and buttress plate, etc. may be done. Ellis T-’shaped buttress plate fixation is the preferred method of treatment.
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