Professional LxH Dynamic Disc Model (ProLxH)

The Professional LxH Dynamic Disc Model is a remarkable human bony (and disc) replica designed to showcase the intricate dynamics of a functional spine motion segment. This lumbar disc model includes an identical copy of the L4 and L5 lumbar vertebrae, complete with its two-part intervertebral disc of an annulus fibrosis and nucleus pulposus. This model sets itself apart with its realistic characteristics by providing a dynamic representation demonstrating dynamic disc bulging, protrusion and extrusion with manual manipulation.

Overview of features:

• crafted from real human specimen origin, identical scale and geometric bony shape
• flexible and dynamic herniating nucleus pulposus (extrusion under load and retracts when the compression is released)
• circumferential (diffuse) disc bulge
• superimposed disc protrusion
• cauda equina (basic nerves) with optional rootlets (blue)
• limacon shaped annulus
• peripherally exposed calcified endplate
• elastomeric white articular cartilage
• subchondrial bone exposed with a hyaline fibrillation
• bone coloured L5
• white superior endplate matching the colour of the articular cartilage
• blue coloured intervertebral disc innervation
• right posterior-lateral radial and circumferential(concentric) fissure
• intervertebral disc innervation to the outer third of the annulus
• nerve ingrowth (neo-innervation) to the inner two-thirds of the damaged annulus to help demonstrate chronic pain
• left partial posterior-lateral radial tear matching up to the disc protrusion (contained nucleus)
• anterior circumferential tear
• transparent L4
• randomly scattered and embedded black nuclear structures to show nuclear-shifting dynamics through the L4 view lens easily
• L5 superior endplate pores (black)
• L5 superior endplate lesion (red)
• vasculature in L4 vertebral body (red)
• facet subchondrial vascularization (red)
• facet tropism (L5 inferior)