What Are Bone Plates?

The bone plate is located between the inner and outer periosteum, and consists of bone plates. The annular bone plate is arranged parallel to the periphery of the backbone. The surface layer of the backbone is called the outer ring bone plate, and the inner layer of the backbone is called the inner ring bone plate. The outer ring bone plate is neatly arranged, there are scattered dimples between the bone plates, and the bone cells are contained inside. The small blood vessels under the periosteum pass through the outer ring bone plate and enter the interior, forming many tunnels (also called Volkmann). The inner ring bone plate is irregular and arranged in layers with the unevenness of the bone marrow cavity surface.

Bone plate, located between the inner and outer periosteum, consists of dense bone composed of bone plates, blood vessels pass through it, and bone plates have annular bone plates and interstitial plates. The annular bone plate is arranged parallel to the periphery of the backbone. The surface layer of the backbone is called the outer ring bone plate, and the inner layer of the backbone is called the inner ring bone plate. The outer ring bone plate is neatly arranged, there are scattered dimples between the bone plates, and the bone cells are contained inside. The small blood vessels under the periosteum pass through the outer ring bone plate and enter the interior, forming many tunnels (also called Volkmann). The inner ring bone plate is irregular and arranged in layers with the unevenness of the bone marrow cavity surface.

Chinese name

Bone plate

Foreign name

lamella

Description

Bone tissue lamellar unit

Location

Bone tissue

Bone Plate I. Overview:

The lamellar bone structure is called a bone plate. The base layer of the bone plate contains fine collagen fibers arranged in parallel with each other. An unstructured matrix penetrates into the fibers, and bone salt crystals fill it. There are three main ways of arranging lamellar bones: 1. stacked in parallel with each other; 2. arranged in a circle around a central Havel tube; 3. formed between the Haver system, which is a residue of the original bone unit, Bone is absorbed during normal conversion and its voids are subsequently occupied by the deposited Haver system. Bone cell pits are arranged in regular concentric layers and are related to blood vessels. The tubules protruding from the pit radiate inward and outward, communicate with each other, and travel through the bone matrix. Generally, a small tube of a Haval system is not connected to an adjacent one. The dimples are not only between the bone plate layers, but also within the bone plate. The surface of the long bone and flat bone is a regular bone plate containing many interconnected small pipes and vascular nerves. The collagen fibers surround the blood vessel space in a concentric circle.

Bone Plate II, Periosteum

A fibrous membrane composed of dense connective tissue. Periosteum generally refers to the membrane that covers the surface of bones other than the articular surface.

Periosteum can generally be divided into two layers, the inner and outer layers, but there is no sharp boundary. The outer layer of the periosteum has fewer cellular components, mainly coarse collagen fibers, interwoven with each other, and some fibers penetrate the bone, called sharpey's fibers or perforating fibers. Its role is Fix the periosteum to the bone. The inner layer of the periosteum is directly attached to the bone. Its tissue composition changes with age and functional activities. During the embryonic period and the postnatal growth period, the cells are relatively active. Growth and regeneration. In adulthood, these osteoblasts change to a resting state, but maintain their osteogenic potential throughout life, called osteoblasts. During bone fracture, the osteogenesis potential is activated and re-transformed into osteoblasts to participate in the repair process of the fracture. The periosteum is rich in blood vessels, lymph and nerves, and plays an important role in bone nutrition, regeneration and pain perception. A large number of small blood vessels enter the Volkamann's canal from the periosteum.

The endosteal membrane is mainly composed of a layer of flat cells. They are osteoblasts with osteogenic potential, just like the cells in the outer layer of the bone.