title: Magnetic resonance imaging evaluation after re-notchplasty at second-look arthroscopy.
abstract: OBJECTIVE
  To clarify the effects of re-notchplasty on magnetic resonance imaging (MRI) for evaluating the reconstructed anterior cruciate ligament (ACL).
  
  
  METHODS
  Observational cohort study.
  
  
  METHODS
  Twenty-one patients who underwent re-notchplasty at second-look arthroscopy were examined. The MRI findings of the reconstructed ACL were classified as having either high, intermediate, or low intensity based on the clarity of appearance.
  
  
  RESULTS
  The impinged group at second-look arthroscopy underwent re-notchplasty. Twelve patients continued to show a high signal intensity that did not decrease after re-notchplasty at the second-look operation. In contrast, 9 impinged ACL grafts showed a decreased signal intensity of the graft after re-notchplasty.
  
  
  CONCLUSIONS
  In this study, 9 cases showed a decreased intensity and were considered to have an impingement at the notch, which thus influenced the maturity process by decreasing the compression on the reconstructed ACL.
authors.affiliation: Department of Orthopaedic Surgery, Fukuoka University School of Medicine, Fukuoka, Japan. Akanamiya@aol.com
authors.forename: Takeshi
authors.initials: T
authors.lastname: Kanamiya
authors.forename: Michiya
authors.initials: M
authors.lastname: Hara
authors.forename: Masatoshi
authors.initials: M
authors.lastname: Naito
mesh_terms: D000293:Adolescent; D000328:Adult; D016118:Anterior Cruciate Ligament / Q000473:pathology* / Q000601:surgery*; D000070598:Anterior Cruciate Ligament Injuries; D001182:Arthroscopy; D015331:Cohort Studies; D005260:Female; D006801:Humans; D007718:Knee Injuries / Q000601:surgery; D008279:Magnetic Resonance Imaging; D008297:Male; D017847:Patellar Ligament / Q000637:transplantation; D012086:Reoperation