Hiranaka, Takaaki Department of Orthopaedic Surgery, Okayama University Hospital
Kamatsuki, Yusuke Department of Orthopaedic Surgery, Kochi Health Science Center
Miyazawa, Shinichi Department of Orthopaedic Surgery, Okayama University Hospital ORCID
Okazaki, Yoshiki Department of Orthopaedic Surgery, Okayama University Hospital
Masuda, Shin Department of Orthopaedic Surgery, Okayama University Hospital
Okazaki, Yuki Department of Orthopaedic Surgery, Okayama University Hospital
Kodama, Yuya Department of Orthopaedic Surgery, National Hospital Organization Iwakuni Clinical Center
Ozaki, Toshifumi Department of Orthopaedic Surgery, Okayama University Hospital
Background To investigate the relationship between tibial tunnel aperture location and postoperative meniscal healing. Methods We enrolled 25 patients (20 women and five men, mean age: 62.5 years) who underwent transtibial pullout repair for medial meniscus (MM) posterior root repair. The expected MM posterior root attachment center (AC) and tibial tunnel center (TC) were identified using three-dimensional computed tomography, and the minimum AC–TC distance was calculated. The meniscal healing status following transtibial pullout repair was assessed by second-look arthroscopy (mean postoperative period: 15 months) using a previously reported scoring system (meniscal healing score; range: 0–10). The association between AC–TC distance and meniscal healing score was investigated using univariate linear regression models. The optimal AC–TC distance cut-off for improved MM healing score (≥ 7) was determined using receiver operating characteristic analysis. Results The AC–TC distance and meniscal healing score were significantly associated (y = − 0.42x + 9.48, R2 = 0.342; P = 0.002), with the optimum AC–TC distance being 5.8 mm. This cut-off had a sensitivity of 100% and specificity of 53%. Conclusions This study demonstrates that AC–TC distance is significantly correlated with postoperative meniscal healing. Anatomical repair within 5.8 mm of the AC may result in improved meniscal healing.
Medial meniscus posterior root tear
This fulltext is available in Apr. 2021.
© 2020 Elsevier B.V.
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