Definition

1. Noun:
   • A medical procedure involving the removal of fluid from a joint by centesis: "Arthrocentesis" refers specifically to the puncture of a joint capsule with a needle to aspirate (withdraw) synovial fluid for diagnostic or therapeutic purposes.

Usage

• As a subject of a sentence:
  • Arthrocentesis is a common diagnostic tool for evaluating joint pain and swelling.
• As an object of a verb:
  • The rheumatologist performed an arthrocentesis on the patient's swollen knee.
• With a preposition:
  • Fluid obtained during arthrocentesis is sent to the laboratory for analysis.

Examples

• The diagnosis of gout was confirmed after crystal analysis of the fluid from the .
• provided immediate pain relief by reducing pressure within the inflamed joint.
• Ultrasound guidance is sometimes used to improve the accuracy and safety of .

Advanced Usage

• Therapeutic vs. Diagnostic Arthrocentesis: The procedure can be performed to relieve pressure (therapeutic) or to obtain a fluid sample for testing (diagnostic).
  • Therapeutic arthrocentesis quickly alleviated the patient's discomfort.
• Image-Guided Arthrocentesis: Refers to performing the procedure with the aid of ultrasound or fluoroscopy for precision.
  • For small or difficult-to-access joints, image-guided arthrocentesis is the standard of care.

Variants and Related Words

• Centesis (n): A general term for a surgical puncture to remove fluid from a body cavity (e.g., amniocentesis, thoracentesis).
• Arthrocenteses (n): The plural form of arthrocentesis.
• Synovial Fluid Analysis (n): The laboratory examination of the fluid extracted via arthrocentesis.
• Joint Aspiration (n): A common synonym for arthrocentesis.

Synonyms

• Joint aspiration: The most common direct synonym.
• Joint tap: An informal term used in clinical settings.

Related Phrases / Collocations

• To perform an arthrocentesis: To carry out the procedure.
  • The doctor will perform an arthrocentesis in the clinic.
• To undergo arthrocentesis: To have the procedure done to oneself.
  • The athlete had to undergo arthrocentesis to drain the effusion.
• Arthrocentesis needle: The specific medical instrument used.
• Arthrocentesis fluid: The synovial fluid that is withdrawn.

Noun

1. removal of fluid from a joint by centesis