The role of MRI in evaluation of arthroscopic transtibial pullout repair for medial meniscus posterior root tears

Clin Imaging. 2021 Sep:77:158-168. doi: 10.1016/j.clinimag.2021.02.029. Epub 2021 Feb 23.

Abstract

Medial meniscus posterior root tears (MMPRT) can lead to meniscal extrusion, loss of hoop tension, loss of load-sharing ability and increased contact pressure. Currently, the most commonly used technique for root repair is arthroscopic transtibial pullout repair (ATPR). This article aims to illustrate both normal and abnormal postoperative imaging findings of the MMPRT repair performed with ATPR, with emphasis on MRI. The radiologist must highlight the tunnel position, the reduction of the medial meniscus posterior root to its anatomical attachment, the signs of root healing (continuity and lower signal intensity), and eventual meniscal extrusion or signs of osteoarthritis.

Keywords: Knee; Medial meniscus posterior root tear; Meniscus radial tears; Musculoskeletal imaging; Orthopedic surgery.

MeSH terms

  • Arthroscopy
  • Humans
  • Magnetic Resonance Imaging
  • Menisci, Tibial / diagnostic imaging
  • Menisci, Tibial / surgery
  • Plastic Surgery Procedures*
  • Tibial Meniscus Injuries* / diagnostic imaging
  • Tibial Meniscus Injuries* / surgery