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Extra-articular Corrective Osteotomy With Bone Grafting to Achieve Lengthening and Regain Alignment for Distal Radius Fracture Malunion.

Surgical correction of the distal radius fracture malunion is challenging because of the 3-dimensional deformity. We propose a method by using the Kapandji intrafocal pinning in corrective osteotomy for treatment of the distal radius fracture malunion to facilitate the alignment correction while using the bone graft to restore the radial length. The surgery was started with the osteotomy from a volar approach, and the osteotomy gap was expanded gradually. Then, allobone grafting was performed to maintain the corrected radial length. We used the Kapandji intrafocal pinning dorsally to provide dorsal supporting force and radially to correct the radial inclination. Finally, a volar plate was used to buttress and push the distal fragment to fit as to regain the correct volar tilt. We enrolled 10 patients of distal radius fracture malunion with a mean age of 59.3 years. All patients had bone healing within 3 months after surgery. The mean lengthened distance was 5 mm. The radial inclination and volar tilt could be corrected with improved functional results.