![]() ![]() In these joints, the contiguous bony surfaces are covered with articular cartilage and connected by ligaments lined by synovial membrane. Diarthroses are freely movable articulations. diarthrosis: A joint that can move freely in various planes.Ī synovial joint, also known as a diarthrosis, is the most common and most movable type of joint in a mammal’s body.A major constituent of the embryonic and young vertebrate skeleton, converted largely to bone with maturation. articular cartilage: A tough, elastic, fibrous connective tissue found in various parts of the body such as the joints, outer ear, and larynx.With its yolk-like consistency, its principal role is to reduce friction between the articular cartilage of synovial joints during movement. synovial fluid: A viscous, non-Newtonian fluid found in the cavities of synovial joints.synovial membrane: A thin membrane of joints comprised of smooth connective tissue and that secretes synovial fluid. ![]() articulation: A joint or the collection of joints at which something is articulated, or hinged, for bending.Compressive ace bandage dressings often aid in the prevention of fluid reaccumulation.\( \newcommand\) No activity modifications or changes in weight-bearing status are necessary following the procedure, in the absence of other pathology. Once the procedure is complete, the antiseptic should be cleaned off the skin, site dried, and pressure and a soft dressing applied for local hemostasis. The syringe may be emptied and reattached to the indwelling needle repeatedly, minimizing needle entry points. ![]() The fluid should then be transferred to a sterile specimen collection cup and sealed for transport to the laboratory for analysis. On obtaining access to the joint, negative pressure should be maintained in the syringe until an adequate amount of synovial fluid is collected. A spinal needle may be an option for deeper joints or patients with anatomy complicated by obesity. Next, a large gauge, sharp needle, typically 18 gauge (or smaller if a smaller joint in being aspirated), is inserted into the joint attached to a minimum 10 cc syringe. Local anesthetic can be used to create a cutaneous/subcutaneous wheel for local pain control. The site is then prepped and draped in the usual sterile fashion using antiseptics that include one or a combination of alcohol, betadine, and/or chlorhexidine. The literature documents the safe entry portals thoroughly for the shoulder, elbow, wrist, hip, knee, and ankle. Once indications are met for arthrocentesis, aspiration site is selected and marked. Fluoroscopy and CT guided arthrocentesis can also provide utility for deeper joints including shoulder and hip. Ultrasound technology may be useful in ensuring correct needle placement but is often unnecessary. Sterility is essential not only to prevent transmission of infection but also to ensure accurate fluid analysis. This procedure should be done under sterile procedural conditions and performed by a physician with intimate knowledge of the involved anatomy. Arthrocentesis is the process by which synovial fluid collection occurs by penetrating the joint space through aspiration. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |