The intricate network of lacunae, interconnected by canaliculi, forms a sophisticated vascular and signaling landscape within the otherwise rigid and hard tissue. Defining Lacunae and Their Structural Role At its core, a lacuna (plural of lacuna) is a small, spaces within the lamellae of compact and spongy bone.
The Dynamic Living Tissue: How Lacunae Keep Bone Active and Responsive
Osteocytes are exquisitely sensitive to the physical forces, or strain, exerted on the bone. Microarchitecture in Different Bone Types The organization of lacunae varies between the two main types of bone, reflecting their distinct mechanical roles.
For instance, in osteoporosis, the overall bone mass decreases, but the size and number of lacunae may remain relatively constant, leading to a higher relative volume of lacunar space within the reduced bone tissue. Through these tiny tunnels, osteocyte dendrites extend, making direct contact with the dendrites of neighboring cells.
The Dynamic Living Tissue: How Lacunae and Canaliculi Form Bone's Vital Communication Network
When bone is subjected to stress, such as during movement or weight-bearing, the mineralized matrix surrounding the lacuna undergoes microscopic deformation. Mechanosensing and the Lacunar-Canalicular System One of the most critical functions of the lacunae is mechanosensing.
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