What is normal trabecular pattern?
Basic concept. 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 trabecular system of femur?
Trabecular bone, also called cancellous bone, is porous bone composed of trabeculated bone tissue. It can be found at the ends of long bones like the femur, where the bone is actually not solid but is full of holes connected by thin rods and plates of bone tissue.
What is trabecular bone morphology?
Trabecular morphology is an increasingly recognized contributor to bone strength, with plate-like trabeculae conferring more strength than rod-like trabeculae and axial alignment along the direction of primary loading similarly being associated with increased strength (14, 15).
What is trabecular bone fraction?
Trabecular bone volume fraction (TBVF) is highly associated with the mechanical competence of trabecular bone. TBVF is ordinarily measured by histomorphometry from bone biopsies or, noninvasively, by means of high-resolution microcomputed tomography and, more recently, by micro-MRI.
What are trabeculae what is their function?
What is the function of trabecular bone? Trabecular bone is found inside spongy or cancellous bone. The trabeculae act like a network of supporting beams to provide strength and support to the bones.
Where is trabecular bone?
Trabecular bone is situated at the end of the long bones and in the spinal column, where it fills all of the inner vertebral space and has a complex three-dimensional architecture (Thurner et al., 2007).
How is trabecular bone score measured?
Determination of trabecular bone score Trabecular bone score (TBS) uses standard lumbar spine DXA imaging to assess bone texture inhomogeneity (that is, the number of filled versus unfilled voxels) in order to gauge bone quality and fracture risk.
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.
Why are the bony trabeculae so arranged?
It may appear that the trabeculae are arranged in a haphazard manner, but they are organized to provide maximum strength similar to braces that are used to support a building.
What is a normal trabecular bone score?
Therefore, the following normal range for TBS values has been proposed: Among men, TBS ≥ 1.326 is considered to be normal; TBS between 1.231 and 1.326 is considered to have partially degraded microarchitecture, and TBS ≤ 1.231defined degraded microarchitecture.
What is the trabecular number?
Trabecular Number (Tb. N): It is the number of trabeculae per unit of length. The unit of measurement is mm-1. Equations 5 and 6 are used for the calculation in the plate or rod model, respectively, to represent the trabeculae (CT-Analyser, 2008; Silva et al., 2011):
What is trabeculae bone?
Introduction. Trabecular bone tissue is a hierarchical, spongy, and porous material composed of hard and soft tissue components which can be found at the epiphyses and metaphyses of long bones and in the vertebral bodies (Fig. 1).
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 you interpret a trabecular bone score?
A score above−1 is considered normal in BMD T-scores obtained at the femur and lumbar spine, a score between−1 and−2.5 is classified as osteopenia (low bone mass), and a score below−2.5 is classified as OP.
Is trabecular bone score the same as T-score?
Trabecular bone score may be used in conjunction with the T-Score to determine if the microstructure is compromised in addition to the T- Score diagnosis of low bone mass or osteoporosis. Or conversely, if there is low bone mass or osteoporosis but good microstructure.
How are trabeculae positioned?
Trabeculae are the thin columns and plates of bone that create a spongy structure in a cancellous bone, which is located at the ends of long bones and in the pelvis, ribs, skull, and vertebrae.
What is normal trabecular bone score?
What is the trabecular pattern of the proximal femur?
Trabecular pattern of proximal femur. Dr Matt Skalski and Dr Aditya Shetty ◉ et al. Trabecular pattern of proximal femur refers to the five groups of trabeculae that are demonstrable within the femoral head and neck.
What are the different stages of trabecular pattern?
Importance of trabecular pattern 1 stage I: medial trabeculae form an angle greater than 180° 2 stage II : medial trabeculae of head form an angle of approximately 160° with femoral neck 3 stage III: medial trabeculae are out of alignment with those of pelvis 4 stage IV: medial trabeculae are in alignment with those of pelvis More
What is trabecula in 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 are secondary compressive trabeculae?
Secondary compressive/lateral compressive trabeculae it has a fan-like configuration extends from the calcar and lesser trochanter to the greater trochanter A central area bounded by the three trabecular patterns is referred to as the Ward triangle 4.