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Several small punctures are made into the knee joint while the patient is deep asleep and pain-free (general anesthesia) or sleepy (sedated) and pain-free (regional anesthesia or spinal anesthesia).
Review Date 6/4/2025
Updated by: C. Benjamin Ma, MD, Professor, Chief, Sports Medicine and Shoulder Service, UCSF Department of Orthopaedic Surgery, San Francisco, CA. Also reviewed by David C. Dugdale, MD, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.
