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Updated: May 9, 2026

Early Weight-Bearing Rehabilitation Protocol After Anterior Cruciate Ligament Reconstruction
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Early Weight-Bearing Rehabilitation Protocol After Anterior Cruciate Ligament Reconstruction

Published on: March 1, 2024

Does medial patellofemoral ligament reconstruction decrease patellar height? A preliminary report.

Marios G Lykissas1, Tianyang Li, Emily A Eismann

  • 1*Division of Orthopaedic Surgery, Cincinnati Children's Hospital Medical Center †College of Medicine, University of Cincinnati, Cincinnati, OH.

Journal of Pediatric Orthopedics
|July 23, 2013
PubMed
Summary
This summary is machine-generated.

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Medial patellofemoral ligament (MPFL) reconstruction for patellar instability significantly decreased patellar height postoperatively. This study evaluated patellar height changes after MPFL surgery in adolescents.

Area of Science:

  • Orthopedic surgery
  • Biomechanical analysis
  • Radiographic assessment

Background:

  • Patellar instability is a common orthopedic condition in adolescents.
  • Medial patellofemoral ligament (MPFL) reconstruction is a surgical procedure to address patellar instability.
  • The effect of MPFL reconstruction on patellar height requires further investigation.

Purpose of the Study:

  • To evaluate the hypothesis that MPFL reconstruction decreases patellar height.
  • To compare patellar height changes in adolescents undergoing MPFL reconstruction versus a conservative treatment control group.
  • To assess the reliability of different patellar height indices.

Main Methods:

  • Retrospective review of lateral knee radiographs from 38 adolescents who underwent MPFL reconstruction.

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  • Measurement of Insall-Salvati, Blackburne-Peel, and Caton-Deschamps indices, and plateau-patella angle.
  • Comparison with 25 adolescents treated conservatively for osteochondritis dissecans to control for growth-related changes.

    • Main Results:

    • Preoperatively, MPFL reconstruction patients had significantly greater patellar height compared to controls.
    • Postoperatively, MPFL reconstruction patients showed a significant decrease in patellar height on the Blackburne-Peel and Caton-Deschamps indices.
    • No significant difference in postoperative patellar height indices between the MPFL and control groups.
    • Good to excellent intrarater reliability was found for all measured indices.

    Conclusions:

    • MPFL reconstruction for patellar instability leads to a decrease in patellar height postoperatively.
    • Long-term effects of MPFL reconstruction on patellar height warrant further research.