Surgeons are able to perform spine surgery accurately and efficiently without patient-specific modeling, according to a study published in Spine.
The study’s authors researched the range of interpersonal variation of the geometric parameters to determine the bending stiffness in flexion, extension, axial rotation and lateral bending.
A maximal disc height was able to reduce spinal stiffness to 75-86 percent of the mean motion segment stiffness, while minimally disc height increased the spinal stiffness to 154-226 percent of the mean motion segment stiffness. Lordis angle, transversal and longitudinal facet angle, endplate depth and capsular ligament area also influenced stiffness.
Read the abstract about patient specific spine implants.
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