Melvin D. Helgeson

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STUDY DESIGN This is an in vitro biomechanical study. OBJECTIVE The current investigation was performed to evaluate adjacent level kinematic change following unilateral and bilateral facet(More)
STUDY DESIGN In vitro cadaveric biomechanical analysis. OBJECTIVE Define the T1 and T2 anatomic lamina size and evaluate the bone-screw interface strength of various pedicle screw options and(More)
BACKGROUND CONTEXT Recent studies have demonstrated cases of adjacent vertebral body osteolysis when assessing the effect of bone morphogenetic protein (BMP) on fusion rates. However, no study to(More)