ACI is an abbreviation for 'autologous chondrocyte implantation'.
Page updated September 2023 by Dr Sheila Strover (Clinical Editor)
A membrane is created by harvesting a bit of the connective tissue covering the bone, and sewn over the defect in the bone. The cultured cells are then injected behind it.
ACI is a mainstream surgical procedure for localised full-thickness cartilage defects of the knee.