Subchondral bone
What it means
Subchondral bone is the layer of bone directly under the cartilage in your joints, helping cushion and support the joint surface.
Changes in this bone layer often go along with joint wear and pain, which can affect how comfortably you move and exercise to protect your bones.
Subchondral bone is the layer of bone just beneath the cartilage that lines your joints, like the hip, knee, or shoulder. It sits right under the articular cartilage and acts like a shock absorber, supporting the smooth cartilage surface and spreading out the forces that go through the joint when you move, walk, or stand.
This bone is denser than the spongy trabecular bone nearby, which helps it do its job of cushioning and supporting the joint surface. When subchondral bone changes shape, thickens, or develops small cysts, it's often linked to wear-and-tear changes in the joint, such as osteoarthritis, where cartilage breakdown and bone changes happen together over time.
Keeping bones and joints healthy as you age usually involves a mix of staying active, maintaining muscle strength around joints, and managing body weight to reduce joint stress. If you notice joint pain, stiffness, or swelling, it's worth discussing with your doctor, since they can check whether subchondral bone or cartilage changes are contributing to your symptoms.
Changes in bone just under cartilage can mean joint wear, affecting how comfortably you move and exercise.
Where this leads
WordSubchondral bone supports your joint surface. Wonder how the spongy trabecular bone deeper inside the joint adds strength in a different way?
Related words
Articular cartilage is the smooth tissue covering the ends of bones in a joint, cushioning movement and letting…
Osteoarthritis is a common joint disease where cartilage breaks down over time, causing pain and stiffness in joints…
Trabecular bone is the spongy, honeycomb-like bone found inside structures like your spine and hip, providing…
Cortical bone is the dense, hard outer layer of bone that forms a protective shell and resists bending and twisting…
The hip joint is the ball-and-socket joint where the thigh bone meets the pelvis, letting the leg move freely while…
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