Spinal biomechanics and functional anatomy.

This research article aims at understanding the mechanical properties and normal functioning of a horse’s spinal column in order to better comprehend the root causes of back lesions and pain. By studying the mobility of the intervertebral sections during diverse movements, this can be used to detect and treat back issues in horses effectively.

Understanding Spinal Bio-mechanics in Horses

In order to understand the root causes of back lesions and pain in horses, it’s important to know how the vertebral column normally functions and the mechanical properties it possesses. These properties can be examined through in vivo (living organisms) and in vitro (outside of the living organism) studies:

• In vivo studies focus on real-time, dynamic observation of spinal movements in living horses. Though such studies are few in number, they provide useful information on gait-specific kinematic movements and electromyographic data, which helps to understand how electrical signals cause muscle contractions.
• In vitro studies involve anatomical exploration of the spine and vertebrae outside the body of the horse, which reveal essential details normally difficult to study in a living organism. Investigators can apply higher stresses to intervertebral motion within these disarticulated specimens, giving additional insights into these movements.

The Importance of Studying Intervertebral Mobility

Each movement a horse makes, whether it’s flexion, extension, lateroflexion (bending to the side), or rotation, affects the intervertebral mobility differently. Observing and understanding these variations helps us to understand the functional behavior of the vertebral column. Key observations from these studies:

• Focus on variations in regional and intervertebral mobility during movements.
• Emphasis on understanding how these movements vary along the length of the spine (craniocaudal variations) and their anatomical causes.
• Determination of the rotation center in thoracolumbar intervertebral joints based on the InterCentric Radius (ICR) and how it affects dorsoventral movements (up-and-down motions) in a horse.

This research significantly contributes to a comprehensive understanding of intervertebral mobility in horses, which paves the way for more effective diagnosis and treatment of spinal impairments in these animals.