title: Comparison of Bioabsorbable Interference Screws Composed of Poly-l-lactic Acid and Hydroxyapatite (PLLA-HA) to WasherLoc Tibial Fixation in Patients After Anterior Cruciate Ligament Reconstruction of the Knee Joint.
abstract: BACKGROUND
  The reconstruction of the anterior cruciate ligament (ACL) of the knee joint is a standard in ACL complete rupture treatment in athletes. One of the weakest points of this procedure is tibial fixation of grafts.
  
  
  OBJECTIVE
  The aim was, firstly, to evaluate patients 3-4 years after primary ACL reconstruction with the use of autologous ipsilateral STGR grafts and with tibial fixation using a bioabsorbable interference screw composed of PLLA-HA or WasherLoc, comparing the postoperative result to the preoperative condition and, secondly, to compare the results between the two groups of patients with different tibial fixation.
  
  
  METHODS
  Group I consisted of 20 patients with a bioabsorbable interference screw composed of PLLA-HA tibial fixation. In Group II, there were 22 patients after ACL reconstruction with the use of WasherLoc tibial fixation. The Lachman test, pivot-shift test, Lysholm Knee Scoring Scale and 2000 International Knee Documentation Committee (2000 IKDC) Subjective Knee Evaluation Form were used to evaluate the results.
  
  
  RESULTS
  The intra-group comparison of the results of the 2000 IKDC Subjective Knee Evaluation Form and Lysholm Knee Scoring Scale obtained in the groups studied showed statistically significant differences between the evaluation performed preoperatively and postoperatively. The inter-group comparison of the results of the 2000 IKDC Subjective Knee Evaluation Form and Lysholm Knee Scoring Scale obtained postoperatively showed no statistically significant differences between the two groups.
  
  
  CONCLUSIONS
  An evaluation 3-4 years after ACL reconstruction with the use of autologous ipsilateral STGR grafts demonstrated significant progress from the preoperative condition to the postoperative result in patients with tibial fixation using a bioabsorbable interference screw composed of PLLA-HA as well as in patients with WasherLoc tibial fixation. There were no differences found between the two groups of patients after ACL reconstruction in terms of manual stability testing or a subjective assessment of knee joint outcomes.
authors.affiliation: Department of Orthopedics and Traumatology Surgery, T. Marciniak Lower Silesian Specialist Hospital - Emergency Medicine Center, Wrocław, Poland.
authors.forename: Mateusz
authors.initials: M
authors.lastname: Patkowski
authors.affiliation: Department of Physiotherapy, The College of Physiotherapy in Wroclaw, Wrocław, Poland.
authors.forename: Aleksandra
authors.initials: A
authors.lastname: Królikowska
authors.affiliation: Department of Traumatology, Clinic of Traumatology and Hand Surgery, Wroclaw Medical University, Wrocław, Poland.
authors.forename: Paweł
authors.initials: P
authors.lastname: Reichert
mesh_terms: D020341:Absorbable Implants; D000328:Adult; D000070598:Anterior Cruciate Ligament Injuries / Q000601:surgery*; D059549:Anterior Cruciate Ligament Reconstruction / Q000379:methods*; D001863:Bone Screws; D017886:Durapatite; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011091:Polyesters; D013977:Tibia / Q000601:surgery*; D016896:Treatment Outcome; D055815:Young Adult
chemical_list: D011091:Polyesters; C033616:poly(lactide); D017886:Durapatite
keywords: anterior cruciate ligament reconstruction; bone screws; orthopedic fixation devices