Types of joints in bones. Synovial joint full explanation.
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Types of joints in bones and explanation of synovial joint.
Joints
Any connection between bones of the skeleton is called as a joint Or articulation. Arthrology ia the term applied for the study of joints.
CLASSIFICATION OF JOINTS : Joints are classified as:
1. Fibrous joints
2. Cartilaginous joints
3. Synovial joint
FIBROUS JOINTS( or Synarthroses) : They are also called as fixed or immovable joints. In these joints, there is a tight union between the bones. So, no movement is possible at these joints e.g. sutures of the skull nd teeth in their socket.
CARTILAGINOUS JOINTS (or amphiarthroses) : They are also called as movable joints. In this type:
1.The articular ends of the bones are covered by hyaline cartilage.
2. There is a pad of fibrocartilage between the joint.
3. The joints is covered by ligaments.
Symphysis pubis and intervertebral joints are example of cartilaginous .
SYNOVIAL JOINT ( or diartroses): They are also called as freely movable joints. The characteristics of these joints are:
1. Articular end of bones are covered by hyaline Cartilage.
2. Bones are bound together by ligaments.
3. Joint is enclosed by fibrous capsule.
4. Capsule of the joint is lined by synovial membrane.
5. The cavity of the joint contains synovial fluid.
Classification of synovial joints: Synovial joints is further classified as follows:
1. Gliding joint (plane joint) : Here two flate surface of bones glide in each other, e.g. joint between carple and tarsal bones,
2. Hinge joint: Here, movement is possible in one plane only e.g. elbow joint.
3. Pivot joint : In this joint, rotation is the only possible movement, e.g. joint between radius and ulna.
4. Ball and socket joint : Articular end of one bone is ball like. It fits into the socket like cavity of another bone. Movement in all direction is possible in this type e.g. shoulder joint and hip joint.
5. Saddle joint: It has one concave surface. This results in free movement in all directions e.g. joint between metacarpal bone of thumb and trapezium.
Wish you knowledge📚
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