A biomechanical chain—sometimes called the "kinematic chain" or "kinetic chain"—is a simple idea about a complex system. You already know that the hip bone is connected to the thigh bone, the thigh bone is connected to the leg bone, the leg bone is connected to the ankle bone, and the ankle bone is connected to the foot bone. Someone could even write a song about this—and it seems they already have. This interconnectedness is the basis of how our bodies work, and it's about more than merely the bones that make up our skeleton. This biomechanical chain includes our muscles, tendons, ligaments, blood vessels, glands, nerves and much more.
When it comes to ease-of-movement, problems with our hips usually take a back seat to other joint problems that become more obvious as our musculoskeletal system ages. In particular, our back and knees are prone to problems that can restrict our activities and cause chronic pain. However, the health of our hips is actually crucially important in ensuring that we maintain mobility into old age because they are the center around which the forces of movement revolve.
Posted by Dr. Babak Missaghi