Patient Information Resources

1089 Spadina Road
Toronto, AL M5N 2M7
Ph: 416-483-2654
Fax: 416-483-2654

Child Orthopedics
Spine - Cervical
Spine - Lumbar
Spine - Thoracic

View Web RX

« Back

What is a semitendinosus-gracilis autograft? My son is going to have this method of repairing his torn ACL.

There are two main methods used to repair a torn or ruptured anterior cruciate ligament (ACL). The patellar tendon graft from the front of the knee is one, and the hamstrings tendon from behind the knee is another.

The hamstrings is made up of three distinct muscle/tendon groups. They are: 1) semimenbranosus, 2) semitendinosus, and 3) biceps femoris. Two other muscles near the hamstrings help flex the knee. These are the gracilis and sartorius muscles.

The semitendinosus and gracilis tendons lay one on top of the other as they insert into the bone along the side of the knee. The semitendinosus-gracilis (STG) tendons can be harvested together, braided, and folded over to make a stronger graft to replace the ACL.

Patients tend to like the hamstring graft better but surgeons often prefer the quadriceps tendon graft. The hamstring graft is more technically difficult for the surgeon, whereas the quadriceps tendon graft often leaves the patient with knee pain, especially if any pressure is applied to the kneecap.

Loss of knee flexor strength is another possible downside to the STG graft. Researchers are studying ways to best rehab each type of graft. As more and more people participate in sports, it's likely that ACL injuries will continue to rise. The need for a strong graft with good function afterwards is important, especially to get athletes back in action as soon as possible.


« Back

*Disclaimer:*The information contained herein is compiled from a variety of sources. It may not be complete or timely. It does not cover all diseases, physical conditions, ailments or treatments. The information should NOT be used in place of visit with your healthcare provider, nor should you disregard the advice of your health care provider because of any information you read in this topic.

All content provided by eORTHOPOD® is a registered trademark of Mosaic Medical Group, L.L.C.. Content is the sole property of Mosaic Medical Group, LLC and used herein by permission.