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Graft extrusion after medial and lateral MAT differs according to surgical technique: a meta-analysis

  • Arthroscopy and Sports Medicine
  • Published:
Archives of Orthopaedic and Trauma Surgery Aims and scope Submit manuscript

Abstract

Introduction

It is unclear whether the incidence and amount of graft extrusion differ between knees undergoing medial and lateral meniscus allograft transplantation (MAT). This meta-analysis, therefore, compared the incidence and amount of transplanted meniscus allograft extrusion following medial and lateral MAT.

Materials and methods

All studies comparing absolute or relative extrusions, or proportion of major extrusions (> 3 mm), on magnetic resonance imaging between medial and lateral MATs were included.

Results

Eight studies were included in the meta-analysis. Using the arthroscopic-assisted technique, medial MAT had significantly greater absolute (0.99 mm, p = 0.002) and relative (19.4%, p = 0.001) extrusions than lateral MAT. Using the complete arthroscopic technique, lateral MAT had 1.45 mm greater absolute extrusion than medial MAT (p < 0.001), but there was no difference in relative extrusion. Using the arthroscopic-assisted technique, the proportion of knees with major extrusion was greater for medial than lateral MAT (OR 5.32, p < 0.001), but, using the complete arthroscopic procedure, there was no difference in proportions of major extrusions between medial and lateral MAT (OR 0.28, p = 0.08).

Conclusion

Graft extrusions after medial and lateral MAT differed according to surgical technique. Graft extrusion was greater after medial than lateral MAT using the arthroscopic-assisted technique, but was greater after lateral than medial MAT using the complete arthroscopic procedure.

Level of evidence

Meta-analysis (Level II).

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Funding

This study was supported by SMC-Ottogi Research Fund (SMX1162171).

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Author notes

  1. Seong-Il Bin and Hyun-Jung Kim contributed equally to the work.

Authors and Affiliations

  1. Department of Orthopedic Surgery, Asan Medical Center, College of Medicine, University of Ulsan, Seoul, South Korea

    Seong-Il Bin

  2. Department of Preventive Medicine, Korea University College of Medicine, Seoul, South Korea

    Hyun-Jung Kim

  3. Department of Orthopaedic Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Ilwon-ro, Gangnam-gu, Seoul, 06351, South Korea

    Dae-Hee Lee

Authors
  1. Seong-Il Bin
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  2. Hyun-Jung Kim
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Correspondence to Dae-Hee Lee.

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The authors declare that they have no conflict of interest.

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This article does not contain any studies with human participants or animals performed by any of the authors.

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Bin, SI., Kim, HJ. & Lee, DH. Graft extrusion after medial and lateral MAT differs according to surgical technique: a meta-analysis. Arch Orthop Trauma Surg 138, 843–850 (2018). https://doi.org/10.1007/s00402-018-2922-0

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  • DOI: https://doi.org/10.1007/s00402-018-2922-0

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