circumduction

/,sə:kəm'dʌkʃn/
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Thân thiện
circumduction

The physical therapist guides the patient's arm in a slow circumduction.

Definition
  1. Noun:
    • A circular movement of a limb or eye: "Circumduction" refers to the specific type of motion where the distal end of a limb (like an arm or leg) or the eye moves in a circle, while the proximal end remains relatively fixed. This movement combines the actions of flexion, extension, abduction, and adduction.
Usage and Examples
  • Noun:
    • The physical therapist asked the patient to perform shoulder circumduction to assess range of motion.
    • Circumduction of the hip is an important movement in some dance forms.
    • The eye's ability for circumduction is more limited compared to limb joints.
Advanced Usage
  • Anatomical Context: In anatomy and physiology, "circumduction" is a precise technical term for a conical, circular movement at a synovial joint (e.g., ball-and-socket joints like the shoulder and hip). It is not a rotation but a sequential combination of other movements.
  • Clinical/Medical Context: The term is commonly used in medical examinations, rehabilitation, and descriptions of gait abnormalities (e.g., "circumduction gait" where a leg is swung in a semi-circle to compensate for weakness).
Variants and Related Words
  • Circumduct (verb, rare): To move in a circular path.
    • The athlete could circumduct his injured arm only with great pain.
  • Circumductory (adjective, very rare): Pertaining to circumduction.
Synonyms
  • Circular movement: A more general, non-technical term.
  • Conical movement: Describes the shape of the path traced.
  • Sweeping motion: A descriptive, non-technical synonym.
Antonyms
  • Linear movement: Motion in a straight line.
  • Rotation: Movement around a central axis (a distinct type of joint motion).
Related Phrases and Concepts
  • "Circumduction gait": A specific walking pattern where the leg is swung outward in a arc due to difficulty in bending the knee or lifting the foot, often seen after a stroke or with certain neurological conditions.
  • "Range of motion (ROM)": Circumduction is one way to measure the full functional movement of a joint, often part of a ROM assessment.
circumduction

The physical therapist guides the patient's arm in a slow circumduction.

Noun
  1. a circular movement of a limb or eye