Preventing Instrumentation Failure in Three-Column Spinal Osteotomy: Biomechanical Analysis of Rod Configuration.

Study Design: Biomechanical analysis.

Objectives: To show the role of additional rods and long-term fatigue strength to prevent the instrumentation failure on three-column osteotomies.

Summary Of Background Data: Three-column osteotomy such as pedicle subtraction osteotomy (PSO) and vertebral column resections are surgical correction options for fixed spinal deformity.