The combined open-closed osteotomy for adult spinal deformity by applying a technique of inverted V-shaped high tibial osteotomy: A Case Report

Abstract

We designed a new technique called combined open-closed osteotomy (COCO) to treat adult spinal deformity (ASD) with a rigid or inflexible spine. We developed this by applying the technique of inverted V-shaped high tibial osteotomy. COCO combines the open reduction in interbody on the concave side and closed reduction in the osteotomy area on the convex side. The axis of correction hinge is in the center of the vertebral body. COCO is a simpler and less invasive technique for ASD compared to existing spinal 3-column osteotomies. It may be considered as a preferred option for the corrective surgery of severe spinal deformities.