Definition

1. Noun:
   • The cup-shaped hollow in the hipbone: The cotyloid cavity is the deep, rounded socket in the pelvis, specifically in the hip bone (os coxae).
   • Part of the hip joint: It is the structure into which the head of the femur (thigh bone) fits, forming a ball-and-socket joint that allows for a wide range of leg movement.

Usage Examples

• Noun:
  • The stability of the hip joint depends on the depth of the cotyloid cavity.
  • During the surgery, the surgeon examined the cartilage lining the cotyloid cavity.

Advanced Usage

• Anatomical context: The term is primarily used in technical, medical, and anatomical descriptions. It is often synonymous with "acetabulum" in modern terminology.
  • The fracture involved the posterior wall of the cotyloid cavity.

Variants and Related Words

• Acetabulum (n): The modern and more commonly used Latin term for the cotyloid cavity; the hip socket.
  • The acetabulum is formed by the fusion of three pelvic bones.
• Cotyloid (adj): Describing something cup-shaped or relating to the acetabulum.
  • The cotyloid ligament reinforces the hip joint.

Synonyms

• Acetabulum: The hip socket.
• Hip socket: A common descriptive term.

Related Phrases

• Cotyloid fossa: A specific, non-articular depression at the base of the acetabulum.
  • The cotyloid fossa is where the ligament of the head of the femur attaches.

Noun

1. the cup-shaped hollow in the hipbone into which the head of the femur fits to form a ball-and-socket joint