We report the incidence of late onset post-operative carpal tunnel syndrome (late carpal tunnel syndrome) and late median nerve neuropathy after volar plating of distal radius fracture by conducting a retrospective study on volar plating for distal radius fracture performed during 2002 to 2006. Two hundred eighty-two volar plating were performed for acute distal radius fracture after exclusion. Post-operative hand numbness occurred in 24 patients of which nine had carpal tunnel syndrome. Thus, the incidence of late carpal tunnel syndrome was 3.2% (9/282). Of the eight (8/24, 33%) patients with post-operative hand numbness that failed to respond to conservative treatment, five had carpal tunnel release and three had neurolysis of median nerve at distal forearm. All had clinical improvement except in one patient. The incidence of late carpal tunnel syndrome after volar plating of distal radius in the present series is similar to the prevalence of carpal tunnel syndrome in general population. The incidence is low compared with other series, regardless of treatment method (conservative treatment, volar or dorsal plating). The outcome of post-operative hand numbness is generally favourable.
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