title: [Second-look arthroscopy study after anterior cruciate ligament reconstruction: effect of residual anterior cruciate ligament tissue upon accelerating revascularization of allologous bone-patellar tendon-bone grafting].
abstract: OBJECTIVE
  To explore via an arthroscopic second-look the effect of preserved residual anterior cruciate ligament (ACL) tissue upon revascularization of allologous bone-patellar tendon-bone (B-PT-B) grafting.
  
  
  METHODS
  Twenty-eight patients with allologous B-PT-B ACL reconstruction were recruited. Patients were divided into 2 groups according to the amount of residual ACL tissue. Group A: ACL residual tissue was cleared; Group B: ACL residual tissue was preserved. Patients were advised to undergo arthroscopic second-look at 6 months after ACL reconstruction. During second surgery, ACL photos were taken during 10 minutes after tourniquet was released. Photoshop was used to analyze red chroma of ACL tissue. The percentage area of three degrees of red chroma was calculated and a standard curve plotted.
  
  
  RESULTS
  Fourteen cases in group A and 13 cases in group B were examined by second-look arthroscopy. According to Photoshop analysis, ACL graft in group B had better red chroma appearance than group A. Two peaks were observed on grade three red chroma curve.
  
  
  CONCLUSIONS
  Residual ACL tissue can be preserved during allologous B-PB-B reconstruction of ACL At 6 months post-reconstruction, the revascularization of graft with preserved residual ACL tissue was much better than the other grafts. Small vessels were found on surface of all ACL grafts at 6 months post-reconstruction.
authors.affiliation: Center for Joint Surgery, Southwest Hospital of Third Military Medical University, Chongqing 400038, China.
authors.forename: Lin
authors.initials: L
authors.lastname: Guo
authors.forename: Liu
authors.initials: L
authors.lastname: Yang
authors.forename: Xiao-jun
authors.initials: XJ
authors.lastname: Duan
authors.forename: Qi
authors.initials: Q
authors.lastname: Xu
authors.forename: Jia-rong
authors.initials: JR
authors.lastname: Chen
authors.forename: Guang-xing
authors.initials: GX
authors.lastname: Chen
authors.forename: Gang
authors.initials: G
authors.lastname: Dai
mesh_terms: D000293:Adolescent; D000328:Adult; D016118:Anterior Cruciate Ligament / Q000601:surgery*; D016025:Bone Transplantation; D050376:Bone-Patellar Tendon-Bone Grafting; D005260:Female; D006801:Humans; D008297:Male; D018919:Neovascularization, Physiologic; D019651:Plastic Surgery Procedures; D024162:Second-Look Surgery; D013524:Surgical Flaps; D014182:Transplantation, Autologous; D014184:Transplantation, Homologous; D055815:Young Adult