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Midterm results following medial closed wedge distal femoral osteotomy stabilized with a locking internal fixation device

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

Abstract

Purpose

Aim of this study was to evaluate the subjective and radiological outcome and to evaluate the complications of a medial closing wedge osteotomy at the femur for lateral osteoarthritis with genu valgum.

Methods

Twenty-three patients with grade III to IV cartilage damage and valgus knee alignment were treated with medial closing wedge osteotomy at the distal femur. The osteotomy was stabilized with an internal plate fixator. Age varied between 25 and 55 years (mean 47 years). One patient was lost to final follow-up.

Results

After 3.5 years, all Knee Osteoarthritis Outcome Score (KOOS) subitems increased significantly. There was no significant difference in the subgroup analysis of KOOS subitems for patients with and without microfracture or age (>50 vs. <50 years). There were no perioperative complications. One patient had an overcorrection. All, but one osteotomy, showed stable bone healing. There was a loss of correction due to delayed bone healing in one case. Possible explanations for this complication were injury of the lateral cortex or smoking. This case required revision with bone graft and an additional lateral plate. In no case, a conversion to an endoprosthesis was necessary.

Conclusion

The femoral medial closing wedge osteotomy is a surgical method for improving symptoms of lateral osteoarthritis in the valgus knee.

Level of evidence

IV.

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Authors and Affiliations

  1. Klinik für Orthopädie und Unfallchirurgie, Martin Luther Krankenhaus, Berlin, Grunewald, Caspar Theyss Strasse 27-31, 14193, Berlin, Germany

    Philipp Forkel, Andrea Achtnich, Sebastian Metzlaff & Wolf Petersen

  2. Sporthopaedicum, Straubing, Germany

    Thore Zantop

Authors
  1. Philipp Forkel
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  2. Andrea Achtnich
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  3. Sebastian Metzlaff
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  4. Thore Zantop
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  5. Wolf Petersen
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Correspondence to Wolf Petersen.

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Forkel, P., Achtnich, A., Metzlaff, S. et al. Midterm results following medial closed wedge distal femoral osteotomy stabilized with a locking internal fixation device. Knee Surg Sports Traumatol Arthrosc 23, 2061–2067 (2015). https://doi.org/10.1007/s00167-014-2953-1

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