A58/2 Classic Flexible Human Spine Model with Femur Heads - 3B Smart AnatomyClassic Flexible Human Spine Model with Femur Heads 3B Smart Anatomy Our most popular spine for patient education is also our most affordable spine model. This spine model is fully flexible and designed for hands on demonstrations. The spine contains these features: Full pelvis and occipital plate Fully flexible mounting in spine L3 L4 disc prolapsed on spine Spinal nerve exits Cervical vertebral artery Male pelvis With movable mounted femur heads