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Related Experiment Video

Updated: Jun 16, 2026

Harvesting of Peroneus Longus Tendon Autograft
04:03

Harvesting of Peroneus Longus Tendon Autograft

Published on: September 2, 2025

Patellar tendon repair with hamstring autograft: a cadaveric analysis.

William M Mihalko1, Matthew Vance, Marc J Fineberg

  • 1Campbell Clinic Orthopaedics, University of Tennessee, InMotion Orthopaedic Research Center, Memphis, TN 38017, United States. wmihalko@campbellclinic.com

Clinical Biomechanics (Bristol, Avon)
|February 6, 2010
PubMed
Summary

Augmenting patellar tendon repair with autograft tendons showed a trend toward reduced gap formation compared to standard repair. This technique may improve outcomes and decrease complications after knee surgery.

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Area of Science:

  • Orthopedic surgery
  • Biomechanical engineering
  • Sports medicine

Background:

  • Patellar tendon rupture necessitates surgical repair for knee function restoration.
  • Standard repair involves non-absorbable sutures through patellar drill holes, risking complications like rerupture and gap formation.
  • Autograft augmentation is proposed to mitigate these complications.

Purpose of the Study:

  • To biomechanically compare patellar tendon gap formation between standard repair and autograft-augmented repair under cyclic loading.
  • To evaluate the efficacy of hamstring autograft augmentation in reducing post-repair gap formation.

Main Methods:

  • Eight knee specimens were used to compare standard repair versus hamstring autograft augmented repair.
  • Cyclic loading (2.2 kg weight at 0.25 Hz) simulated early post-operative knee motion.

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  • Gap formation at the repair site was measured at 1, 10, 100, and 250 cycles.

    • Main Results:

    • Augmented repair showed significantly less gap formation (3.6 mm at 1 cycle) than standard repair (8.9 mm at 1 cycle).
    • At 250 cycles, augmented repair had 7.2 mm mean gap formation versus 13.2 mm for standard repair.
    • A statistical trend indicated decreased gap formation with augmented repair across all cycles.

    Conclusions:

    • Augmenting patellar tendon repair with autograft tendons demonstrates a biomechanical trend towards reduced gap formation.
    • This technique shows potential for improving repair integrity and decreasing complications in dynamic knee motion simulations.
    • Further clinical studies are warranted to confirm these biomechanical findings.