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Modification of tibial slope after medial opening wedge high tibial osteotomy: clinical study and mathematical modelling

  • Knee
  • Published:
Knee Surgery, Sports Traumatology, Arthroscopy Aims and scope

Abstract

A prospective non-randomized non-comparative study involved 30 patients who underwent a medial opening wedge high tibial osteotomy for medial knee osteoarthritis using a specific surgical procedure. The tibial slope was calculated pre-operatively and at a mean follow-up of 14 months. A mathematical model of the surgical procedure was developed in order to plan the height of the medial opening wedge and to predict tibial slope changes. Tibial-slope measurements accuracy was good (0.04° ± 0.92°). There was no significant difference for the mean tibial slope before and after surgery (9.2° ± 5.6° vs. 9.1° ± 5.6°, P = 0.47). There was a perfect agreement between the model and the real values for the HKA angle (0.85) and the tibial slope (0.98). The surgical technique used did not modify the tibial slope. Our mathematical model for pre-operative planning was validated with very good accuracy.

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Authors and Affiliations

  1. Hopital Pitié Salpétrière, Paris, France

    Elhadi Sariali & Y. Catonne

  2. Institute of Medical and Biological Engineering, The University of Leeds, Leeds, UK

    Elhadi Sariali

  3. 154 Rue de Picpus, 75012, Paris, France

    Elhadi Sariali

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  1. Elhadi Sariali
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  2. Y. Catonne
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Correspondence to Elhadi Sariali.

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Sariali, E., Catonne, Y. Modification of tibial slope after medial opening wedge high tibial osteotomy: clinical study and mathematical modelling. Knee Surg Sports Traumatol Arthrosc 17, 1172–1177 (2009). https://doi.org/10.1007/s00167-008-0717-5

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  • DOI: https://doi.org/10.1007/s00167-008-0717-5

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