Definition

Noun: - The bony structure forming the base of the torso and connecting the spine to the lower limbs: The pelvic arch is the ring of bones in the pelvic region, consisting of the hip bones (ilium, ischium, pubis), sacrum, and coccyx. It supports the weight of the upper body and provides attachment for muscles and ligaments.

Usage

The term "pelvic arch" is used in anatomical and medical contexts to describe this specific skeletal structure. - The stability of the pelvic arch is crucial for upright posture and walking. - A fracture of the pelvic arch can be a serious injury.

Advanced Usage

• "Integrity of the pelvic arch": Refers to the structural soundness and proper alignment of this bony ring, often discussed in trauma or orthopedics.
  • The surgeon assessed the integrity of the pelvic arch after the accident.

Variants and Related Words

• Pelvis (n): The basin-shaped complex of bones that includes the pelvic arch, the sacrum, and the coccyx. It is often used synonymously with "pelvic arch" in general contexts.
  • The baby's head descends into the mother's pelvis during labor.
• Pelvic girdle (n): A term essentially interchangeable with "pelvic arch," emphasizing its function as a structure to which the lower limbs are attached.
  • The pelvic girdle is wider in females than in males.

Synonyms

• Bony pelvis: Emphasizes the skeletal composition.
• Hip bone structure: A less technical descriptive term.

Notes on Meaning

While "pelvic arch" specifically denotes the bony structure, it is functionally inseparable from the broader concept of the pelvis, which is the entire cavity formed by these bones. In common usage, "pelvis" is the more frequent term.

Noun

1. the structure of the vertebrate skeleton supporting the lower limbs in humans and the hind limbs or corresponding parts in other vertebrates