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Open versus arthroscopic meniscus allograft transplantation: magnetic resonance imaging study of meniscal radial displacement

Tineke De Coninck (UGent) , Wouter Huysse (UGent) , René Verdonk (UGent) , Koenraad Verstraete (UGent) and Peter Verdonk (UGent)
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Organization
Abstract
Purpose: In this imaging study, the radial displacement of meniscal allograft transplants (MATs), inserted with 2 different techniques, namely open soft-tissue fixation and arthroscopic bone tunnel fixation, was compared 1 year postoperatively. Methods: In this study, 37 patients received MATs: 16 MATs (10 lateral and 6 medial) were inserted by an open soft-tissue technique (open MATs), whereas 21 MATs (14 lateral and 7 medial) were implanted by an arthroscopic bone tunnel procedure (arthroscopic MATs). Radial displacement, in millimeters, was evaluated 1 year postoperatively on 1.5-T magnetic resonance images. The number of MATs with radial displacement larger or smaller than 3 mm was determined. To compare radial displacement of open versus arthroscopic MATs, the Mann-Whitney U test was used. Results: The radial displacement of open lateral and medial MATs was significantly larger (all reported P < .02) than that of arthroscopic MATs. In all cases, both open and arthroscopic, the radial displacement of MATs was significantly larger (all reported P < .007) than that of normal menisci. Radial displacement of less than 3 mm was found in 0 of 6 patients with open medial MATs versus 6 of 7 patients with arthroscopic MATs and was found in 1 of 10 patients with open lateral MATs versus 4 of 14 patients with arthroscopic MATs. Conclusions: The radial displacement of MATs arthroscopically inserted with bone tunnel fixation is significantly less than the radial displacement of MATs inserted with open soft-tissue fixation. In addition, normal menisci displace significantly less than meniscal allografts. The clinical importance of radial displacement remains to be determined. Level of Evidence: Level III, retrospective comparative study.
Keywords
KNEE, MRI, EXTRUSION, TEAR, FOCUS, OSTEOARTHRITIS, SUBLUXATION

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Chicago
De Coninck, Tineke, Wouter Huysse, René Verdonk, Koenraad Verstraete, and Peter Verdonk. 2013. “Open Versus Arthroscopic Meniscus Allograft Transplantation: Magnetic Resonance Imaging Study of Meniscal Radial Displacement.” Arthroscopy-the Journal of Arthroscopic and Related Surgery 29 (3): 514–521.
APA
De Coninck, T., Huysse, W., Verdonk, R., Verstraete, K., & Verdonk, P. (2013). Open versus arthroscopic meniscus allograft transplantation: magnetic resonance imaging study of meniscal radial displacement. ARTHROSCOPY-THE JOURNAL OF ARTHROSCOPIC AND RELATED SURGERY, 29(3), 514–521.
Vancouver
1.
De Coninck T, Huysse W, Verdonk R, Verstraete K, Verdonk P. Open versus arthroscopic meniscus allograft transplantation: magnetic resonance imaging study of meniscal radial displacement. ARTHROSCOPY-THE JOURNAL OF ARTHROSCOPIC AND RELATED SURGERY. 2013;29(3):514–21.
MLA
De Coninck, Tineke, Wouter Huysse, René Verdonk, et al. “Open Versus Arthroscopic Meniscus Allograft Transplantation: Magnetic Resonance Imaging Study of Meniscal Radial Displacement.” ARTHROSCOPY-THE JOURNAL OF ARTHROSCOPIC AND RELATED SURGERY 29.3 (2013): 514–521. Print.
@article{4129789,
  abstract     = {Purpose: In this imaging study, the radial displacement of meniscal allograft transplants (MATs), inserted with 2 different techniques, namely open soft-tissue fixation and arthroscopic bone tunnel fixation, was compared 1 year postoperatively.
Methods: In this study, 37 patients received MATs: 16 MATs (10 lateral and 6 medial) were inserted by an open soft-tissue technique (open MATs), whereas 21 MATs (14 lateral and 7 medial) were implanted by an arthroscopic bone tunnel procedure (arthroscopic MATs). Radial displacement, in millimeters, was evaluated 1 year postoperatively on 1.5-T magnetic resonance images. The number of MATs with radial displacement larger or smaller than 3 mm was determined. To compare radial displacement of open versus arthroscopic MATs, the Mann-Whitney U test was used.
Results: The radial displacement of open lateral and medial MATs was significantly larger (all reported P {\textlangle} .02) than that of arthroscopic MATs. In all cases, both open and arthroscopic, the radial displacement of MATs was significantly larger (all reported P {\textlangle} .007) than that of normal menisci. Radial displacement of less than 3 mm was found in 0 of 6 patients with open medial MATs versus 6 of 7 patients with arthroscopic MATs and was found in 1 of 10 patients with open lateral MATs versus 4 of 14 patients with arthroscopic MATs.
Conclusions: The radial displacement of MATs arthroscopically inserted with bone tunnel fixation is significantly less than the radial displacement of MATs inserted with open soft-tissue fixation. In addition, normal menisci displace significantly less than meniscal allografts. The clinical importance of radial displacement remains to be determined.
Level of Evidence: Level III, retrospective comparative study.},
  author       = {De Coninck, Tineke and Huysse, Wouter and Verdonk, Ren{\'e} and Verstraete, Koenraad and Verdonk, Peter},
  issn         = {0749-8063},
  journal      = {ARTHROSCOPY-THE JOURNAL OF ARTHROSCOPIC AND RELATED SURGERY},
  language     = {eng},
  number       = {3},
  pages        = {514--521},
  title        = {Open versus arthroscopic meniscus allograft transplantation: magnetic resonance imaging study of meniscal radial displacement},
  url          = {http://dx.doi.org/10.1016/j.arthro.2012.10.029},
  volume       = {29},
  year         = {2013},
}

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