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ACL reconstruction is surgery to replace the torn ACL ligament. There are several choices of tissue to use for the new ligament, including an autograft (tissue from the patient's own body) or an allograft (tissue from a cadaver). One of the most common autografts use part of the patellar tendon (the tendon in the front of the knee).
Review Date 6/27/2026
Updated by: C. Benjamin Ma, MD, Chair, Department of Orthopaedic Surgery, Dr. Peter and Sophie Pappas Endowed Chair, V-nee Yeh Endowed Professor of Orthopaedic Surgery, University of California, San Francisco, CA. Also reviewed by David C. Dugdale, MD, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.