Definition

1. Noun:
   • Anatomical structure: The glenoid cavity is a shallow, cup-shaped depression or fossa located on the lateral aspect of the scapula (shoulder blade).
   • Joint function: It serves as the socket that articulates with the head of the humerus (the upper arm bone) to form the glenohumeral joint, commonly known as the shoulder joint.

Usage Examples

• Noun:
  • The stability of the shoulder joint depends significantly on the depth and orientation of the glenoid cavity.
  • During the anatomy exam, the students were required to identify the glenoid cavity on the scapula model.
  • An injury to the labrum, a rim of cartilage that deepens the glenoid cavity, can cause shoulder instability.

Advanced Usage

• "Glenoid" as a modifier: The term "glenoid" is often used as an adjective to describe structures related to this cavity.
  • The surgeon repaired the torn glenoid labrum.
• Pathological context: Used when discussing injuries, diseases, or surgical procedures involving the shoulder socket.
  • The patient has osteoarthritis with significant erosion of the glenoid cavity.

Variants and Related Words

• Glenoid fossa: A synonymous term for the glenoid cavity.
• Glenohumeral joint: The ball-and-socket joint formed by the glenoid cavity and the humeral head.
• Glenoid labrum: A fibrocartilaginous rim attached to the margin of the glenoid cavity that helps deepen the socket and stabilize the joint.

Synonyms

• Glenoid fossa: The primary synonym in anatomical terminology.
• Shoulder socket: A common, non-technical term.

Related Phrases

• "Glenoid version": Refers to the angle of tilt of the glenoid cavity, a measurement used in orthopedic surgery.
• "Glenoid rim": The outer edge or border of the glenoid cavity.

Noun

1. the concavity in the head of the scapula that receives the head of the humerus to form the shoulder joint