May 19, 2022

SCREWED: Bilateral SIJ Fusion

Hilton’s Law[1] forms the basis of the relationship between the structural elements of our musculoskeletal system; it states that the nerve supplying a joint also supplies both the muscles that move the joint and the skin covering the articular insertion of those muscles. The innervated parts of joints consist mainly of three ligamentous structures; the ligaments that hold the joints together, the capsule that encases the joint, and the synovium …

March 22, 2022

GOOD POSTURE: A State of Relaxation

What is Posture? Do you ever notice when you see people with good posture? They walk erect, their heads lifted, shoulders back, their arms swing evenly, and they move with a simple, efficient gait. Unfortunately, most of us have some structural imbalance that causes us to alter our posture. Many people think that by stiffening their back to stand up straight, they are correcting their posture but the tension in …

February 16, 2022

The Biomechanical Cause of Lumbar Disc Herniation

During normal anatomical standing, with balanced weight bearing, the spine should not be laterally flexed or rotated. The sacral apex should be neutral, evenly spaced between the right and left ischia. The height of the ilia should be even, with no rotation. If I am correct, this pattern may not exist on any back-pain patients. CLARIFYING SIJ MOVEMENT Balanced Movement In normal movement of the spine, most vertebrae move in …

January 21, 2020

The Underlying Biomechanical Cause of Back Pain

It is well established that bending, lifting, and twisting are the movements that cause most back pain. Biomechanically, these actions put more stress on the sacroiliac joints than on the lumbar discs. So, when we consider biomechanical approaches to back, hip, or leg pain, we should first look at the sacroiliac joint because of how forces are transferred through our structure. When force (weight) is transmitted downward through the spine …

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