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Related Concept Videos

Fractures: Bone Repair01:27

Fractures: Bone Repair

Treatment for a fracture is based on the type of break, the bone affected, and the patient's age.
Minor fractures with no bone displacement are treated by immobilizing the fractured bone using a cast or splint. However, in the case of fractures with displaced bones, the broken bones are repositioned before immobilization to ensure successful healing without deformation and loss of function. The realignment of fractured bone ends is performed through a process called reduction. If the procedure...
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Related Experiment Video

Updated: Jun 30, 2026

Athymic Rat Model for Evaluation of Engineered Anterior Cruciate Ligament Grafts
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Single-Bundle Medial Patellofemoral Ligament Reconstruction Using Adjustable-Length Loop Cortical Button Patella

Christos K Yiannakopoulos1,2, Georgios Kalinterakis1, Apostolos Champipis2

  • 1School of Physical Education and Sport Science, National and Kapodistrian University, Athens, Greece.

Arthroscopy Techniques
|January 16, 2026
PubMed
Summary

This study presents a novel surgical technique for medial patellofemoral ligament (MPFL) reconstruction using a semitendinosus graft. The technique provides strong initial fixation, potentially eliminating the need for postoperative immobilization in patients with knee instability.

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Area of Science:

  • Orthopedic Surgery
  • Sports Medicine
  • Biomedical Engineering

Background:

  • Medial patellofemoral ligament (MPFL) reconstruction is crucial for managing acute or recurrent patellar instability.
  • Current techniques often involve hamstring tendon grafts fixed with bone tunnels and implants.
  • There is a need for robust fixation methods that allow early mobilization.

Purpose of the Study:

  • To describe a novel surgical technique for MPFL reconstruction.
  • To evaluate the feasibility and potential benefits of this technique, including graft fixation and early mobilization.

Main Methods:

  • Utilized a semitendinosus tendon graft for MPFL reconstruction.
  • Employed a partial-width transverse patellar bone tunnel with adjustable loop cortical button fixation.
  • Created an oblique superolateral femoral tunnel for graft fixation with an absorbable interference screw.
  • Graft fixation was optimized at 60° knee flexion and adjusted post-cycling.

Main Results:

  • The described technique allows for secure initial graft fixation.
  • The method potentially eliminates the requirement for postoperative immobilization due to sufficient fixation strength.

Conclusions:

  • This surgical technique offers a viable option for MPFL reconstruction.
  • The fixation method may facilitate earlier patient mobilization and improved outcomes in managing patellar instability.