07/18/2025
Longus Colli
This is a deep muscle; it is a proprioceptive (cybernetic which means densely filled with nerves so postural information links back to the brain) muscle, we often know a lot about superficial muscles as we can see and feel them easily but deep muscles often are leaders to where the more superficial muscles will go as they have to follow the pattern that is forming deep below, the health of them are so important in the stabilisation and posture of the horse.
When we talk about the Longus Colli, we must also include others and all work in conjunction to stabilise the neck and head position is important when we talk about stabilising as we must see through the skin and find out how they work and if we are doing too much and often the muscles we feel and see on the surface are the final chapter in the story of what lies beneath)
The longus Colli (long neck) is placed on the ventral side of the neck (ventral means front as horses are on all four then it is underneath) it is an hypaxial muscle (under the cervical column)
It is a paired muscle which means it goes left and right. It has 3 sections and attaches along the cervical spine from the 1st cervical and then through to the 5th or 6th cervical vertebrae, moving through to the thoracic part as the longus thoracis
Its function along with the scalenius is to flex the neck and the longus coli will also fixate, rotate and stabilise the bones in the neck (vertebrae) and when these work in unison they will help lift the base of the neck (very important when we take into account missing structures) so a very important muscle for stabilising the cervicothoracic junction and also the postural proprioception information through the nerves
Along with deeper muscles including dorsal capitis, oblique capitits, multifidus and spinalis make up some of the stabilising and rotation of the neck and also to unilaterally tilt the head at the craniocervical junction
I am only looking at a small part of a bigger story we need to marry them all together to get the full story it's like dissecting a hoof we would only see it in context to what is before us and we have to guess at what we interpret what we see to what was going on in the rest of the body, and every person who looks at the individual part will have their own theory as to how or why things happened and ask 50 professionals and you will ultimately get 50 different answers as we put our own spin on it, we all put our own version of what we see
We can't just look at the longus Colli without taking into consideration how it works with others and then that’s assuming everything is correct as we know the lamellae part of the nuchal ligament is mostly absent from c5 so how does the horse stabilise an area without the support structure, say the horse has malformation further down or is the 1st ribs malformed again how will the internal structures shift and morph to do another job.
To strengthen the area so it offers a better support system to all the body is all about balance and dynamic mobilisation chin to chest, chin to the knee and chin between fetlocks, (in humans we would tuck our chin in and lift through the neck), we can take our horses out where they have a different feel under their feet, often the horse that sees something on the floor and you feel that lift as it looks is helping that lower neck, and poles when they are at different heights so they look, feeding where the horse has to stand square and lift the base of their neck is also good, and freedom to roam and play for that is where horses build dexterity, and strength, but obviously consult with your own therapist/vet first its and its about taking into consideration things may not always be textbook when it comes to anatomy
We often dismiss things like carrot stretches etc but sometimes we often think of the only good muscle is a stretched muscle whereas with dynamic mobilisation we are creating strength to a weakened or compromised area as with everything we tend to throw the baby out with the bath water and say every stretch or mobilisation is bad when it is usually the majority are good it’s the application of them is wrong
P.s I try to give you as much as I can correct information but often when fact checking my work there can be many answers to where the origin and Insertion of the muscles are and you would be surprised at how many different answers I get its bloody hard because you start doubting yourself, and this is what takes up alot of time, luckily I asked ivana Equine Anatomy in Layers because asking for confirmation from your peers is ok its how we learn.
P.p.s yes I cant draw hands yet 😃😃🙃