title: Comparative Magnetic Resonance Imaging Study of Cross-Sectional Area of Anatomic Double Bundle Anterior Cruciate Ligament Reconstruction Grafts and the Contralateral Uninjured Knee.
abstract: OBJECTIVE
  To evaluate the differences between cross-sectional area of the reconstructed graft by 2 anatomic double-bundle anterior cruciate ligament (ACL) reconstruction techniques, transportal and outside-in and contralateral uninjured knee.
  
  
  METHODS
  In prospective, randomized controlled trials, magnetic resonance imaging of both the reconstructed anatomic double-bundle ACL graft side and the contralateral uninjured knee of 92 patients (mean age, 34.7 ± 10.7 years) between November 2010 and January 2013 were compared. The 3-dimensional curved multiplanar reconstruction function of OsiriX v5.6 was used. Cross-sectional area was measured from the femoral insertion site to the tibial insertion site at 5 different locations, including the midsubstance.
  
  
  RESULTS
  A significant difference was observed between areas of the uninjured side and reconstructed side at the 5 locations. The area of the reconstructed graft at the femoral insertion site (64 ± 13 mm(2)) and midsubstance (62 ± 11 mm(2)) was larger that of the normal ACL (femoral insertion site; 60 ± 13 mm(2), P = .005 and midsubstance; 47 ± 13 mm(2), P = .0001), whereas at the tibial insertion site (71 ± 13 mm(2)) it was smaller than normal ACL (97 ± 22 mm(2), P = .0001). The measured area between the reconstructed graft and normal uninjured side at the femoral insertion site was relatively closer than that at midsubstance and the tibial insertion-site area.
  
  
  CONCLUSIONS
  A double-bundle anterior cruciate ligament reconstruction graft relatively closely restored the cross-sectional area of the femoral footprint area but was smaller than that of the tibial footprint area; however, the cross-sectional area of graft was much larger than that of the midsubstance.
authors.affiliation: Department of Orthopaedic Surgery, Kang-Dong Sacred Heart Hospital, Hallym University Medical Center, Seoul, Republic of Korea.
authors.forename: Byung Hoon
authors.initials: BH
authors.lastname: Lee
authors.affiliation: Department of Orthopaedic Surgery, Kang-Dong Sacred Heart Hospital, Hallym University Medical Center, Seoul, Republic of Korea.
authors.forename: Dong Yeon
authors.initials: DY
authors.lastname: Seo
authors.affiliation: Department of Orthopaedic Surgery, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea.
authors.forename: Samarjit
authors.initials: S
authors.lastname: Bansal
authors.affiliation: Department of Orthopaedic Surgery, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea.
authors.forename: Jun Ho
authors.initials: JH
authors.lastname: Kim
authors.affiliation: Department of Orthopedic Surgery, Sungkyunkwan University School of Medicine, Kangbuk Samsung Hospital, Seoul, Republic of Korea.
authors.forename: Jin Hwan
authors.initials: JH
authors.lastname: Ahn
authors.affiliation: Department of Orthopaedic Surgery, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea. Electronic address: mdwang88@gmail.com.
authors.forename: Joon Ho
authors.initials: JH
authors.lastname: Wang
mesh_terms: D000328:Adult; D016118:Anterior Cruciate Ligament / Q000473:pathology* / Q000601:surgery*; D059549:Anterior Cruciate Ligament Reconstruction / Q000379:methods*; D005260:Female; D005269:Femur / Q000601:surgery; D006801:Humans; D007718:Knee Injuries / Q000473:pathology* / Q000601:surgery*; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D013977:Tibia / Q000601:surgery; D055815:Young Adult