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Joint structure impacts range of motion from "summary" of Yoga Anatomy by Leslie Kaminoff,Amy Matthews

The structure of our joints plays a crucial role in determining the range of motion we can achieve in our bodies. Each joint has its unique characteristics that influence how it can move. For example, a hinge joint like the elbow can only bend and straighten in one plane, while a ball-and-socket joint like the hip allows for a wide range of movement in multiple directions. The shape of the bones, the arrangement of ligaments and tendons, and the presence of cartilage all contribute to the overall mobility of a joint. If the bones in a joint are shaped in a way that limits movement, such as in the case of a flat facet joint in the spine, then the range of motion in that area will be restricted. On the other hand, a joint with a rounded ball-like end, like the shoulder joint, allows for a greater degree of rotation and flexibility. Ligaments are another important factor in determining range of motion. These tough bands of connective tissue surround joints and help to stabilize them. If a ligament is too tight or too loose, it can restrict movement or lead to instability in the joint. For example, tight hip flexors can limit the ability to extend the hip fully, while loose ligaments in the shoulder can increase the risk of dislocation. The presence of cartilage in a joint also impacts how it moves. Cartilage acts as a cushion between bones and helps to reduce friction during movement. In joints like the knee, where there is a large amount of cartilage, smooth and pain-free motion is possible. However, in joints like the wrist, where there is less cartilage, movement may be more limited and prone to wear and tear. In yoga practice, understanding how joint structure affects range of motion is essential for practicing safely and effectively. By recognizing the unique characteristics of each joint, we can adapt poses to work with our bodies rather than against them. This knowledge empowers us to move mindfully, respecting our individual anatomical differences and avoiding injury.
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    Yoga Anatomy

    Leslie Kaminoff

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