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What are Ellipsoid Joints?

The ellipsoid joints are a type of synovial joint and it is one of the most important types of joint it is also called the curved joint. The ellipsoid joint can also be referred to as a condyloid joint or condylar joint. Some of the ellipsoid joint examples are the wrist joint, metacarpophalangeal joints, metatarsophalangeal joints, and atlantooccipital joints.

Examples of Ellipsoid Joints

  • The wrist joint
  • Metatarsophalangeal joints
  • Atlanto-occipital joints
  • Metacarpophalangeal joints

Features of Ellipsoid Joints

  • It is a biaxial joint.
  • An ellipsoid joint allows movements in all angular motions.
  • The movement of ellipsoid joints is in two plains, back and front, and side to side.
  • According to the ellipsoid joint definition, They are usually present in between the knuckle joints, wrist joints, metacarpophalangeal joints, and metatarsophalangeal joints of fingers.

Ellipsoid Joint

Interesting Facts about Ellipsoid Joints

  1. An ellipsoid joint enables bending and extending and is present at the base of the index finger.
  2. An ellipsoid joint has two types of movement, which permit the opposition movement only to a small or certain extent.
  3. Synovial joints are movable joints. Similarly, an ellipsoid joint, which is a type of synovial joint, is also a movable joint.

Functional Classification of joint

  1. Ball and Socket Joints: Here, one bone is hooked into the hollow space of another bone. This type of joint helps in rotatory movement. An example of ball and socket joints is the shoulders.
  2. Pivotal Joints: In this type of joint, one bone has tapped into the other in such a way that full rotation is not possible. These joints aid in sideways and back-forth movement. Ex: Pivotal joints in the neck.
  3. Hinge Joints: Hinge joints are like door hinges, where only back and forth movement is possible. Ex Hinge joints are the ankle, elbows, and knee joints.
  4. Saddle Joints: The saddle joint is the biaxial joint that allows the movement on two planes–flexion and abduction adduction. Ex: The thumb is the only bone in the human body having a saddle joint.
  5. Condyloid Joints: Condyloid joints are joints with two axes that permit up-down and side-to-side motions. The condyloid joints can be found at the base of the index finger, carpals of the wrist, elbow, and wrist joints. This joint is also known as a condylar, or ellipsoid joint.
  6. Gliding Joints: These are also known as planar joints. These joints are mainly found in those regions where the two bones meet and glide on one another in any of the directions. Ex: The lower leg to the ankle joints and the forearm to wrist joints.

Structural Classification of Joints

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