The wide intraarticular exposure of the wrist joint under arthroscopic view provides an excellent ground for various forms of partial wrist fusion. Combining with percutaneous fixation technique, arthroscopic partial wrist fusion can potentially generate the best possible functional outcome by preserving the maximal motion pertained with each type of partial wrist fusion because the effect of extraarticular adhesion associated with open surgery can be minimized. From March 2009 to May 2011 20 cases were performed at our clinic. Through the radiocarpal or midcarpal joint, the corresponding articular surfaces are denuded of cartilage using arthroscopic burr and curette. Carpal bones involved in the fusion process are then transfixed with K wires percutaneously after alignment is corrected. Autogenous cancellous bone graft is inserted and impacted to the fusion site through cannula under direct arthroscopic view. Final fixation could be by multiple K wires or cannulated screw system. Symptoms resolved or improved, and functional motion was gained in all cases. All surgical scars were almost invisible, and aesthetic outcome was excellent.