Papers

Last author International journal
Apr, 2021

Placement of an anatomic tibial tunnel significantly improves the medial meniscus posterior extrusion at 90° of knee flexion following medial meniscus posterior root pullout repair.

Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA
  • Yusuke Kamatsuki
  • ,
  • Takayuki Furumatsu
  • ,
  • Takaaki Hiranaka
  • ,
  • Yoshiki Okazaki
  • ,
  • Yuki Okazaki
  • ,
  • Yuya Kodama
  • ,
  • Tomohito Hino
  • ,
  • Shin Masuda
  • ,
  • Shinichi Miyazawa
  • ,
  • Toshifumi Ozaki

Volume
29
Number
4
First page
1025
Last page
1034
Language
English
Publishing type
Research paper (scientific journal)
DOI
10.1007/s00167-020-06070-w

PURPOSE: The purpose of this study was to evaluate the influence of tibial tunnel position in pullout repair for a medial meniscus (MM) posterior root tear (MMPRT) on postoperative MM extrusion. METHODS: Thirty patients (median age 63 years, range 35-72 years) who underwent transtibial pullout repairs for MMPRTs were included. Three-dimensional computed tomography images of the tibial surface were evaluated using a rectangular measurement grid for assessment of tibial tunnel position and MM posterior root attachment. Preoperative and postoperative MM medial extrusion (MMME) and posterior extrusion (MMPE) at 10° and 90° knee flexion were measured using open magnetic resonance imaging. RESULTS: Tibial tunnel centers were located more anteriorly and more medially than the anatomic center (median distance 5.8 mm, range 0-9.3 mm). The postoperative MMPE at 90° knee flexion was significantly reduced after pullout repair, although there was no significant reduction in MMME or MMPE at 10° knee flexion after surgery. In the correlation analysis of the displacement between the anatomic center to the tibial tunnel center and improvements in MMME, and MMPE at 10° and 90° knee flexion, there was a significant positive correlation between percentage distance and improvement of MMPE at 90° knee flexion. CONCLUSION: This study demonstrated that the nearer the tibial tunnel position to the anatomic attachment of the MM posterior root, the more effective the reduction in MMPE at 90° knee flexion. Our results emphasize that an anatomic tibial tunnel should be created in the MM posterior root to improve the postoperative MMPE and protect the articular cartilage in a knee flexion position. Placement of an anatomic tibial tunnel significantly improves the MMPE at 90° of knee flexion after MM posterior root pullout repair. LEVEL OF EVIDENCE: IV.

Link information
DOI
https://doi.org/10.1007/s00167-020-06070-w
PubMed
https://www.ncbi.nlm.nih.gov/pubmed/32451621
ID information
  • DOI : 10.1007/s00167-020-06070-w
  • Pubmed ID : 32451621

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