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Iliopsoas stretch6/19/2023 Over-compensation of the uninjured hindlimb or diagonal pair.The Iliopsoas muscle group influences the position of the pelvis.Unlevel points of tuber coxae when assessed statically.“Hip drop” on the side of injury as hindlimb flexion is limited.This leads to the horse adjusting his movement = compensatory locomotive patterns.Loss of muscle tone to Iliopsoas muscle group.Instead, more subtle signs may be evident. However, the Iliopsoas muscle group can be injured without causing apparent lameness. In a case where there is an injury to a muscle, it would be expected to see lameness… locomotive signs of discomfort and pain. Injury can occur unilaterally or bilaterally. ![]() Whilst the injury may have occurred in the Iliopsoas muscle group, a direct negative effect on the function of the Psoas Minor muscle may occur. Head and neck in a deep and round position.This particularly places a lot of stress on the muscle insertion at the lesser trochanter of the femur.Existence of a previous injury to the muscle or associated structures.Therefore, the likelihood of a force being applied beyond the muscles capabilities is increased. The Iliopsoas is particularly vulnerable to strain due to its anatomical positioning and function. As is easily determined by noting the function of the Iliopsoas, correct and healthy function is required for efficient hindlimb protraction. The Iliopsoas muscle group connects the trunk to the hindquarters, enabling hindlimb muscle engagement whilst maintaining correct posture. Stabiliser of vertebral column when the hindlimb is in a fixed position. ![]() Innervation (same as that of Psoas Major):īoth the Iliacus and Psoas Major that make up the Iliopsoas have the same muscular function. ![]() It is here where it fuses with the Psoas Major. Local intercostal lumbar nerve (ventral branch) lumbar plexus.It is here where it fuses with the Iliacus. Ventral surface of the proximal ends (underside of the top) of the last two ribs.Transverse processes of the lumbar vertebrae.The Iliopsoas muscle group is comprised of the Psoas Major and the Iliacus muscle. This blog post will also touch on “The Psoas Theory” which is a train of thought that injury to the Iliopsoas muscle group is far more common than we think, and injury can be responsible for the primary cause of secondary pain and poor performance seen in modern day equines. Following my attendance to an insightful and thought-provoking lecture and demonstration by Tom Beech (The Osteopathic Vet), Ricky Gache (Farrier) and Mandy Miller (Olympus Saddlery Ltd) at Lomond Classical Equestrian Centre… this weeks muscle focus will orientate around the Iliopsoas muscle group of the horse.
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