The joint is a place of connection, the site where movable parts of the body are connected to each other (separated by a movable bone articulation slit). Joints are the joints and how all the hinges are obliged to ensure free movement of moving articulated parts. If the ends of two bones constantly rub against each other when you’re moving, then gradually they would have joint each other, causing you excruciating pain. To this did not happen, the nature has created the joints. Joints in most cases are the so-called sinovial′noe mating. In such joints the ends of bones are covered with a protective layer of cartilage.
Cartilage is composed of connective tissue, which is cartilage cells (appropriate), and the structure resembles a sponge, rich liquid. Cartilage has no blood vessels or owns your own nerves, but his food is carried out according to the laws of osmosis and diffusion of articular fluid. It’s sleek, strong, resilient and elastic and can be compressed a bit and cracking down, that is, to its original state, thus damping blows bones together.
The joint is enclosed in a fibrous joint bag (capsule) that helps hold the bones together and at the same time not stopping them from moving. However, as neither fibrous joint nor is elastic cartilage, it did not survive long without friction lubrication, even if the washable parts be replaced by fresh cartilage tissue (and she is constantly updated). Because of its confined space is filled with a number of intra-articular lubricating fluid is synovial.
It is transparent and viscous, something similar to the egg white. However, the synovial fluid ensures not only bones, but cartilage and delivers in the construction and energy material, i.e. oxygen, proteins, water, salt, vitamins, hormones. At the same time, it removes all already spent. A synovial fluid is formed in sheath (membrane) tissue from inside the joint capsule. The source of the lubricating fluid that circulates in the blood is synovial sheath. Synovial fluid that lubricates protects the cartilage and prevents collision in the foot. Its internal pressure can sometimes withstand enormous compressive stresses resulting from certain movements. The more we move the more increases the circulation of the synovial fluid in the joint, in other words, active joint is in a healthy condition.
This process occurs only when the pressure of bones upon each other through the cartilage causes the liquid to be absorbed in the cartilage and to leave it. Work is joint, that is, the pressure forces the liquid circulate in cartilage, so to prevent deformation of the cartilage required more movement. When people actively and variously move bone bruise one another and in some spots, and stronger in any weaker. Unbalanced parts of cartilage and bones absorb liquid compound and loaded it discharges. The more, say, running a hand or foot, the greater the mutual pressure, the more bone is pulled and squeezed the synovial fluid and the more it is produced from the blood, which is also beginning to arrive to reinvigorate the joint tissues. Less pressure is weaker this mechanism works, lubrication. If your arms and legs, and joints, synovial villi idle, stop supplying synovial liquid. When a person remains stationary for a long time, for example due to severe trauma, it would dry up as the joints. Getting up out of bed and started walking, the patient hears how they crackle. This is the result of lack of lubricating fluid. But hardly life returns to normal track as crunching weakens and fades. Dr. Joseph Purita is a joint pain specialist. He has cured a lot of people from this joint problem. Reference http://www.stem.md/
Synovial fluid for cartilage is important also because it does not have its own vessels and are not supplied with blood. But the blood circulates profusely in bone it is porous, and its emptiness is endless channels and tubules – filled with blood or interstitial fluid. When a person works with your fingers or, say, walking the bones, experiencing the mutual pressure deforms – at the expense of their cells–cores are compressed and stretched. Bone channels accordingly change their volume. In the tibia, for example, when they are in normal walking 1.5 to 2 times greater than when lying down and sitting, that is a great flow of blood as the blood supply, gate opens and enhanced bone.
Bones without movement also lost his strength, elasticity, they become very thin walls. When does acute disorders of the circulatory system, for example, the femoral head is sharp ischemia, which occurs in this place necrosis (eliminate) causes the subsequent development of reformative arthritis.