An integrated suite of tools that assists the surgeon in performing limb deformity assessment and corrective surgery planning. Although specifically directed at surgeons following the CORA method, this module will be of value to all surgeons working in the area of deformity correction. The module has three major capabilities. These are: Assessing the patient’s anatomy pre-operatively Measure mechanical axis deviation Assess hip, knee, and ankle joint orientation (frontal plane) Assess hip, knee, and ankle joint orientation (sagittal plane) Planning Osteotomy cuts Draw a wide range of axes based on mid-diaphyseal and joint lines Establish CORA Add cuts at CORA or manually Plan in frontal, sagittal or oblique planes Provide apical direction and translation graphs Demonstrate bone segment animation to visualize post-operative outcome Customizing the Taylor Spatial Frame, as above Measure (via OV Wizard) the position of the frame with respect to the anatomy