Three-dimensional corrective osteotomy using a patient-specific osteotomy guide and bone plate based on a computer simulation system: accuracy analysis in a cadaver study

BackgroundThe accuracy of three-dimensional (3-D) corrective osteotomy using a patient-specific osteotomy guide and bone plate based on computer simulation was investigated. MethodsSix fresh-frozen cadaver upper limbs were used. A patient-specific osteotomy guide designed to realize a preplanned osteotomy was set on the distal humerus and distal radius, and the error in the setting location was evaluated. After the osteotomy, the surgical site was fixed using a patient-specific bone plate designed to exactly fit the anatomical shape of the postoperative bone model. The postoperative results were compared with the preoperative simulation. ResultsThe errors in the guide location on the humerus and radius were <1.5 degrees and 1.0 mm and <1.0 degrees and 1.0 mm, respectively. The plate fixation errors of the humerus and radius were <2.0 degrees and 1.5 mm and <1.0 degrees and 1.0 mm, respectively. ConclusionsThe system is sufficiently feasible to realize precise 3-D deformity correction of a limb. Copyright (c) 2013 John Wiley & Sons, Ltd.