Our cauda equina and contents | modelling

updating our model anatomy

Spinal Cord and Endings

The spinal cord is a delicate structure. It is protected by the neural arch of the vertebrae and also by the intervertebral discs anteriorly and the ligamentum flava posteriorly.

Below the thoracic region, the spinal cord comes to an end, namely called the conus medullaris, and continues as a cauda equina coming from the name of a horse’s tail.

Dynamic Disc Designs create models that demonstrate this anatomy including the exiting lumbar nerve roots (including the dorsal root ganglions) with optional rootlets to scale and number.

Dorsal Root Ganglion

Dorsal root ganglion dimensions in this anatomical model

Further anatomical details are also modelled extending from the facet joint in our Medial Branch Facet Model.

Medial Branch and Nerve Facet Model

Each exiting nerve root contains both an anterior motor division and a posterior sensory division that includes the dorsal root ganglion. Encroachment syndromes can present patients with tingling downstream which likely indicates sensory compression while weakness usually indicates a motor compression. Having a model with more anatomical detail helps in the determination of the spinal anatomy in question–targeting treatment.

Spinal Cord - Intervertebal foramen

Other lumbar vertebra models includes the cauda equina which includes the dura mater, arachnoid, and pia layers. These are the important coverings of the spinal cord because just inside these coverings is the cerebral spinal fluid.

Spinal Cord - Dura Mater

Dura Mater

Nerve Lumbar Model

Dynamic Disc Designs offers models to help in the management of spinal cord encroachment syndromes. Disc herniation can compress the cord in the cervical and thoracic spine region while it can compress elements of the cauda equina in the lumbar region. Other space occupying lesions can affect the cord and create a variety of sensory or motor disturbances.

Doctors of chiropractic and other spine specialties like minimally invasive surgeons /spine surgeons use patient education as part of the work-up towards initiating treatment. An accurate spinal model can aid the risk management of outcomes that may include spinal canal compression. Having patients better informed can lead to better outcomes.

Dynamic Disc Designs

At ddd, we create models demonstrating the nerves of the spine to educate the patients on the biomechanical principles of disc dynamics over a lifetime. In the case of disc herniation, this can cause unwanted compression on the spinal cord or the cauda equina of the lumbar region. Our models can help with dynamic education of why certain postures and treatments can be helpful. Explore.