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Evaluation of Stem Cell Therapies in a Bilateral Patellar Tendon Injury Model in Rats

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Revision Patellar Tendon Reconstruction Using Hamstring Tendon Autograft.

Estevao Santos¹, Wasif Islam¹, Michael Amick¹

¹Department of Orthopaedics & Rehabilitation, Yale School of Medicine, New Haven, Connecticut, USA.

Video Journal of Sports Medicine

|May 1, 2025

Summary

Revision surgery for chronic patellar tendon ruptures can be complex. This case demonstrates successful reconstruction using hamstring autografts, restoring function and patient satisfaction.

Keywords:

chronic patellar tendon rupture hamstring autograft hamstring tendon graft patellar tendon reconstruction tendon injuries

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Area of Science:

Orthopaedic Surgery
Sports Medicine
Regenerative Medicine

Background:

Chronic patellar tendon ruptures present rare but significant surgical challenges.
These challenges include patellar retraction, muscle atrophy, and adhesions, complicating reconstruction.
Existing literature lacks consensus on optimal graft and fixation methods for these cases.

Purpose of the Study:

To describe a surgical technique for revision patellar tendon reconstruction in a chronic setting.
To present the outcomes of a patient who underwent this revision procedure.

Main Methods:

Revision surgery utilized ipsilateral gracilis and semitendinosus tendon autografts.
Hardware from previous surgery was removed, and graft tunnels were prepared.
Patellar height was normalized using fluoroscopic contralateral measurement and sternal wire fixation.
Graft was passed through patellar and tibial tubercle tunnels, tensioned, and secured.

Main Results:

The patient achieved full range of motion at 2-year follow-up.
The patient returned to work and activities without functional limitations.
Similar case series report improved outcomes, quadriceps strength, and patient satisfaction with hamstring autografts.

Conclusions:

Revision patellar tendon reconstruction for chronic ruptures is technically demanding but feasible.
The described technique using hamstring autografts offers a viable solution for complex cases.
Further research is needed to establish best practices for graft selection and fixation.