Trabeculae
Also called: bone trabeculae, trabecular struts
What it means
Trabeculae are the thin, interconnected struts of bone that form a spongy, lattice-like network inside bones such as the spine and hip.
When trabeculae thin out or disconnect with age or osteoporosis, your bones can lose strength even if density looks only mildly reduced.
Trabeculae are the fine, lattice-like struts of bone tissue that make up the spongy interior of many bones, like the inside of a sponge or honeycomb. You'll find dense networks of them inside the spine (vertebrae), hip, and ends of long bones. Alongside the dense outer shell called cortical bone, trabeculae give bone its strength while keeping it relatively light.
These struts aren't arranged randomly. They line up along the actual directions of stress and load the bone experiences day to day, a concept sometimes called Wolff's Law. In a healthy hip, for example, trabeculae form distinct patterns, some resisting compression and others resisting tension, like an internal engineering truss.
With osteoporosis, bone breakdown gradually outpaces bone building, and trabeculae become thinner, fewer in number, and less connected. This loss of architecture can weaken bone even beyond what a simple density number shows, which is part of why bone quality, not just bone mineral density, matters for fracture risk.
How sure is this?
Graded Established Science: Supported by broad scientific consensus and decades of research. Read each study with its grade in mind. One study is a piece of the picture, not the whole of it.
Thinning or disconnected trabeculae can weaken bones even when density looks only mildly reduced.
Where this leads
WordIf density alone can miss weakening trabeculae, how would you actually detect that? Trabecular Bone Score estimates how well-connected your bone's internal scaffolding is, beyond simple density.
Where the Academy teaches it
This page is the short version. The lessons teach it in full, with the context around it and a quiz to lock it in.
Related words
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…
Wolff's Law says your bones adapt to the loads you put on them, getting stronger with use and losing density when…
Trabecular Bone Score (TBS) is a measurement taken from your spine DEXA image that estimates how well-connected your…
Osteoporosis is a condition where bone breakdown outpaces bone building, causing bones to become thinner, more…
Bone remodeling is the lifelong cycle where cells called osteoclasts remove old bone and osteoblasts build new bone…
Education only, not medical advice. Decisions about tests, medications and treatment belong with your own doctor. OsteoStrong does not diagnose, treat or cure any disease.
