What is the trabecular pattern of bone?
Trabecula is a supportive and connective tissue element which form in cancellous bone. Trabeculae develop in a normal bone and also in a healing bone. The trabecular pattern of growth follows the course of stress lines along the bone and maximum trabeculae develop along the lines of maximum stress.
What is trabeculae histology?
A trabecula (plural trabeculae, from Latin for “small beam”) is a small, often microscopic, tissue element in the form of a small beam, strut or rod that supports or anchors a framework of parts within a body or organ.
What cells are in trabecular bone?
If you could shrink yourself even more and go inside a trabecula, you would find three types of cells that work together to keep your bones strong and healthy: the osteoblasts, osteocytes, and osteoclasts.
How are trabeculae formed?
Formation of trabecular bone When osteoblasts become trapped in the matrix they secrete, they differentiate into osteocytes. Osteoblasts continue to line up on the surface which increases the size. As growth continues, trabeculae become interconnected and trabecular bone is formed.
What is an trabeculae?
Definition of trabecula 1 : a small bar, rod, bundle of fibers, or septal membrane in the framework of a body organ or part. 2 : a fold, ridge, or bar projecting into or extending from a plant part especially : a row of cells bridging an intercellular space.
What is the difference between trabecular and cortical bone?
The key difference between trabecular and cortical bone is that the trabecular bone is the more porous inner regional layers of the body that produces red blood cells while the cortical bone is the rigid outer regional layers of the bone that stores fat.
How is trabeculae formed?
How are trabeculae arranged in spongy bone?
Spongy or cancellous bone tissue consists of trabeculae that are arranged as rods or plates with red bone marrow in between. Spongy bone is prominent in regions where the bone is less dense and at the ends of long bones where the bone has to be more compressible due to stresses that arrive from many directions.
What is a trabecular?
Trabecular bone is a highly porous (typically 75–95%) form of bone tissue that is organized into a network of interconnected rods and plates called trabeculae which surround pores that are filled with bone marrow.
Where is trabecular bone typically found?
ends of long bones
Trabecular or cancellous bone is found predominantly at the ends of long bones and inner parts of flat bones and is composed of interconnecting plates and bars within which lies the bone marrow.
How are trabeculae aligned?
Abstract. Wolff proposed that trabeculae align at 90 degrees angles (orthogonal). However, nonorthogonal alignment of trabeculae has been observed near many joints, including the proximal femur. We propose that nonorthogonal alignment is an adaptation to multidirectional joint loads.
How do trabeculae form?
Several clusters of osteoid unite around the capillaries to form a trabecular matrix, while osteoblasts on the surface of the newly formed spongy bone become the cellular layer of the periosteum (Figure 6.4. 1c). The periosteum then secretes compact bone superficial to the spongy bone.
Why are the bony trabeculae so arranged?
structure in femur …of arcs of bone called trabeculae that are efficiently arranged to transmit pressure and resist stress.