Rapid prototyping model for surgical planning of corrective osteotomy for cubitus varus: Report of two cases

Cubitus varus deformity is a common complication of supracondylar fractures of the humerus in children. The deformity is usually a result of malunion which includes medial tilting, extension and internal rotation. Several techniques for corrective osteotomy of the distal humerus have been described, including a lateral closing wedge, a step-cut lateral closing wedge and arc osteotomy, with various fixation methods. Understanding the components of the deformity is important to the surgical correction. The normal radiographs in both antero-posterior and lateral views give little insight into the bone geometry in all three dimensions, especially the geometry of the cortex at the potential plane of osteotomy. The use of three-dimensional reconstruction model obtained from CT for the assessment and surgical planning of