Osteopathy for Horses with ECVM

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Equine Complex Vertebral Malformation (ECVM) is one of the more sobering discoveries a horse owner can face. First described by Sharon May-Davis in 2014 and formally renamed in 2023, it refers to congenital abnormalities of the sixth and seventh cervical vertebrae and the structures surrounding the cervico-thoracic junction — an area that plays a central role in the horse's posture, movement, and neurological function. Because ECVM cannot be corrected surgically, the question for those working with affected horses shifts from "how do we fix it" to "how do we help the horse live well within it?" This thesis addresses that question through the lens of classical osteopathic philosophy. Drawing on the five models of osteopathic care — biomechanical, neurological, circulatory-respiratory, metabolic-energy, and behavioural-psychological — the author makes a detailed case for why osteopathy is particularly well-suited to complex, multi-system conditions like ECVM. The malformation does not occur in isolation: absence of the caudal ventral tubercle disrupts the attachment of the longus colli muscle, potentially affecting thoracic inlet function, nerve pathways, forelimb biomechanics, and respiratory capacity. Practically, the thesis maps specific techniques to specific consequences. Osteopathic Articular Balancing (OAB) can restore range of motion in unaffected cervical and limb joints, relieving compensatory pressure elsewhere. Balanced Ligamentous Tension (BLT), myofascial release, and craniosacral therapy offer non-invasive routes to calming neural responses and improving circulation through structures that cannot be directly accessed. The thoroughness of the mapping here is one of the thesis's real strengths. What emerges is a treatment philosophy grounded in the body's own capacity for adaptation. Since ECVM is present from birth, the horse has already built compensations around it — the osteopath's role is to support those compensations without deepening restriction. The thesis is a thoughtful contribution to an area where the research is still catching up with the clinical reality.