title: Comparison of the operation of arthroscopic tibial inlay and traditional tibial inlay for posterior cruciate ligament reconstruction.
abstract: OBJECTIVE
  To perform dual-bundle reconstruction of posterior cruciate ligament using full arthroscopic tibial inlay technology with self-designed tibia tunnel drilling system and to compare the effect of arthroscopic tibial inlay versus traditional technique for posterior cruciate ligament reconstruction.
  
  
  METHODS
  32 patients were randomly divided into experiment group (improved tibial inlay, n = 17) and control group (traditional tibial inlay, n = 15). Self-designed tibia tunnel drill system was used to produce intraoperative deep-limited bone tunnel. During follow-up, the location of the bone block and the healing situation were checked by knee X-ray and spiral CT scan. Blood loss, operation time and nerve vascular injuries were evaluated.
  
  
  RESULTS
  Mean intraoperative blood loss was 123.53 ± 74.05 ml in the improved tibial inlay group compared with 332 ± 114.26 ml in the traditional tibial inlay group (t = 6.12, P < 0.05). Mean operation time was 235.27 ± 58.88 min in the improved tibial inlay group compared with 346.37 ± 59.67 min in the traditional tibial inlay group (t = 5.19, P < 0.05). Posterior drawer test were negative in 15 cases, slight positive in 2 with improved tibial inlay technique compared with 14 negative cases and 2 positive cases of traditional tibial Inlay technique. The X-ray and spiral CT scan showed the location of the bone block were perfect and healed well with the patent who received improved tibial inlay technology after 12 weeks postoperatively.
  
  
  CONCLUSIONS
  Accurate depth-limited bone tunnel can be produced by the tibia tunnel drill system with minor trauma, less bleeding and reducing of nerves or vessels and the recent clinical effects of PCL reconstruction were pretty good.
authors.affiliation: Department of Orthopedics, The Fourth Affiliated Hospital of Harbin Medical University Harbin 150001, China.
authors.forename: Daifeng
authors.initials: D
authors.lastname: Lu
authors.affiliation: Department of Orthopedics, The Fourth Affiliated Hospital of Harbin Medical University Harbin 150001, China.
authors.forename: Mochao
authors.initials: M
authors.lastname: Xiao
authors.affiliation: Department of Orthopedics, The Fourth Affiliated Hospital of Harbin Medical University Harbin 150001, China.
authors.forename: Yongyun
authors.initials: Y
authors.lastname: Lian
authors.affiliation: Department of Orthopedics, The Fourth Affiliated Hospital of Harbin Medical University Harbin 150001, China.
authors.forename: Yong
authors.initials: Y
authors.lastname: Zhou
authors.affiliation: Department of Orthopedics, The Fourth Affiliated Hospital of Harbin Medical University Harbin 150001, China.
authors.forename: Xuefeng
authors.initials: X
authors.lastname: Liu
keywords: Posterior cruciate ligament; arthroscopy; inlays