Glenohumeral

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Glenohumeral Joint

The Glenohumeral Joint (pronounced: glen-o-hyoo-mer-al) is a ball and socket joint that allows for the articulation between the humerus (the upper arm bone) and the glenoid cavity of the scapula (shoulder blade). This joint is one of the most mobile in the human body, allowing for a wide range of motion in the arm.

Etymology

The term "Glenohumeral" is derived from the two bones that form the joint: the glenoid cavity of the scapula and the humerus. "Gleno-" comes from the Greek word "glenoeides", meaning socket, and "-humeral" refers to the humerus bone.

Anatomy

The Glenohumeral Joint is a synovial joint, meaning it is filled with synovial fluid which aids in reducing friction between the articular cartilage during movement. The joint is encapsulated by a fibrous capsule and is reinforced by the rotator cuff muscles, which provide stability and prevent dislocation.

Related Terms

  • Rotator cuff: A group of muscles and tendons that surround the shoulder joint, providing stability and allowing for various movements of the shoulder.
  • Humerus: The long bone in the upper arm or forelimb that runs from the shoulder to the elbow.
  • Scapula: Also known as the shoulder blade, it connects the humerus bone of the arm to the collarbone.
  • Glenoid cavity: A part of the scapula that forms the socket of the shoulder joint.
  • Synovial fluid: A viscous, non-Newtonian fluid found in the cavities of synovial joints. It reduces friction between the articular cartilage during movement.

External links

Esculaap.svg

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