title: Single-bundle transtibial posterior cruciate ligament reconstruction using a bioabsorbable cross-pin tibial back side fixation.
abstract: OBJECTIVE
  The purpose of this study was to examine a developed surgical technique by performing a mid-term evaluation of clinical and stability results and complications.
  
  
  METHODS
  Thirty patients who underwent transtibial posterior cruciate ligament (PCL) reconstruction using a bioabsorbable cross-pin tibial back side fixation method were enrolled in this prospective study. Lysholm and International Knee Documentation Committee (IKDC) knee scales were used to evaluate clinical outcomes. Stability was evaluated using a Telos device with a 150 N force at 90 degrees of knee flexion. Follow-up magnetic resonance imaging (MRI) was also performed in 20 (66.7%) patients, and complications were evaluated. Those with complication by MRI were assigned to an abnormal MRI group.
  
  
  RESULTS
  The follow-up period was 47 (range, 25-62) months. On comparing preoperative and final follow-up clinical results, Lysholm and IKDC knee scale scores were found to have improved significantly (P < 0.001). The mean side-to-side difference in posterior translation measured using a Telos device was 13.4 ± 3.1 mm (range 10-20 mm) preoperatively and 3.2 ± 1.5 mm (range 1-7 mm) at last follow-up, which represented a significant improvement in stability (P < 0.001). Five patients showed cyst formation in the tibial tunnel and two patients showed a significant signal increase at the anterior portion of the tibial tunnel, which was believed to indicate a pro-cystic status. The normal and abnormal MRI groups had similar Lysholm and IKDC knee scale scores and stress radiographs (P > 0.05).
  
  
  CONCLUSIONS
  Single-bundle transtibial PCL reconstruction using a bioabsorbable cross-pin tibial back side fixation was found to produce satisfactory clinical and stability results. However, despite these satisfactory results, a potential complication of tibial cyst formation was observed.
  
  
  METHODS
  Case series, Level IV.
authors: Department of Orthopaedic Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
authors: Jin Hwan
authors: JH
authors: Ahn
authors: Yong Seuk
authors: YS
authors: Lee
authors: Sang-Hee
authors: SH
authors: Choi
authors: Moon Jong
authors: MJ
authors: Chang
authors: Do Kyung
authors: DK
authors: Lee
mesh_terms: D020341:Absorbable Implants; D000328:Adult; D001182:Arthroscopy; D001858:Bone Nails; D005260:Female; D006801:Humans; D007593:Joint Instability / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D016119:Posterior Cruciate Ligament / Q000293:injuries / Q000601:surgery*; D011446:Prospective Studies; D013977:Tibia / Q000601:surgery*; D055815:Young Adult