What is a cancellous bone?
Cancellous bone is the meshwork of spongy tissue (trabeculae) of mature adult bone typically found at the core of vertebral bones in the spine and the ends of the long bones (such as the femur or thigh bone).
What are bone trabeculae?
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.
What is lamellar bone?
Lamellar bone represents the main type of bone in a mature skeleton. It is characterized by an orderly arrangement of collagen bundles and their cells (fig. The deposited collagen exhibits an orderly lamellar pattern with circular layers of collagen alternating with longitudinal ones.
What is spongy bone?
Spongy (cancellous) bone is lighter and less dense than compact bone. Spongy bone consists of plates (trabeculae) and bars of bone adjacent to small, irregular cavities that contain red bone marrow. The canaliculi connect to the adjacent cavities, instead of a central haversian canal, to receive their blood supply.
Which bone is called cancellous bone?
Cancellous bone, also known as spongy or trabecular bone, is one of the two types of bone tissue found in the human body. Cancellous bone is found at the ends of long bones, as well as in the pelvic bones, ribs, skull, and the vertebrae in the spinal column.
Is cancellous bone Osteoinductive?
Cancellous bone grafts consist predominantly of trabecular bone tissue. Cancellous bone has higher osteogenic and osteoinductive properties than cortical bone and a larger number of progenitor cells and osteoblasts.
What is Austroprosis?
Osteoporosis is a health condition that weakens bones, making them fragile and more likely to break. It develops slowly over several years and is often only diagnosed when a fall or sudden impact causes a bone to break (fracture). The most common injuries in people with osteoporosis are: broken wrist.
What is the difference between lamellar and woven bone?
Woven bone (also known as fibrous bone), which is characterized by a haphazard organization of collagen fibers and is mechanically weak. Lamellar bone, which has a regular parallel alignment of collagen into sheets (“lamellae”) and is mechanically strong.
What is the difference between compact and spongy bone?
Compact bone is dense and composed of osteons, while spongy bone is less dense and made up of trabeculae. Blood vessels and nerves enter the bone through the nutrient foramina to nourish and innervate bones.
Is cancellous bone radiolucent or radiopaque?
The cancellous bone consists of trabeculae, thin bony rods, and plates, surrounded by areas of bone marrow, presenting a mixed radiopaque and radiolucent radiographic appearance.
Why is spongy bone called cancellous?
Cancellous bone is also known as spongy bone because it resembles a sponge or honeycomb, with many open spaces connected by flat planes of bone known as trabeculae. Inside the trabeculae are three types of bone cells: osteoblasts, osteocytes and osteoclasts. Osteoblasts are the cells that make new bone.
What is a corticated bone?
Cortical bone is the hard outer layer (cortex) of bone. If a bone is described as “corticated” that would indicate some part of it has thickened and hardened more than usual.
What are the names for cortical bone?
The cortical bone also is known as compact bone, is the most rigid outermost region of a bone. Hence, cortical bones are the strongest and densest bones in the body. They are made up of osteons. It is also referred to as compact bone.
What is a subcortical cyst?
A subcortical cyst of the bone is a cyst within the bone marrow just below the plates that form the outer table of your bones.
Is the cortex eroded?
Cortical erosion is the hallmark of the active, aggressive or malignant tumor, and the pattern of cortical erosion may be highly correlated with the histology of the lesion: In chondrosarcoma, (unicameral bone cyst, non-ossifying fibroma) may cause cortical erosion with minimal periosteal response. In an aneurysmal bone cyst or giant cell tumor, the cortex may be completely destroyed, but a thin layer of periosteal neo-corticalization may surround the lesion.