Bursae saclike structure that are situated strategically to alleviate friction in some joints (shoulder and knees) that are filled with fluid that is similar to synovial fluid.
The blood supply of synovial joint is derived from the arteries sharing in the anastomosis around the joint.
There are six types of synovial joints. Gilding joints, such as carpals of the wrist, these joints allow only gliding or sliding movements. Hinge joints, act as a door hinge does, allowing flexion and extension in just one plane. Pivot joints one bone rotates about another. Condyloid joints two bones fit together with an odd shape these joints allow flexion, extension, abduction, and adduction movements. Saddle joints, which resemble a saddle, permits the same movement as the condyloid joints, but allow greater movement. Ball and socket joints allow all movement except gliding. Compound joints modified hinge joints condylar joints (condyles of the femur join with condyles of tibia) and saddle joint (lower end of femur joins with patella.) The function of the synovial joints are to allow