By drawing the mid-diaphyseal lines of the proximal and distal segments, the intersection marks the "apex" of the deformity.
This is the most critical slide in the deck. principles of deformity correction ppt
, popularized by Dr. Dror Paley. The CORA is the point where the proximal and distal mechanical (or anatomical) axes of a deformed bone intersect. The relationship between the Osteotomy rule and the CORA determines the outcome: By drawing the mid-diaphyseal lines of the proximal