title: Different Stabilization Techniques for Type 62B3 Acetabular Fractures in Combination With Primary Total Hip Arthroplasty in Elderly Patients: A Biomechanical Comparison.
abstract: BACKGROUND
  The total hip arthroplasty (THA) as part of acute fracture management is used for acetabular fractures in elderly patients. Our objective was to assess the stability of osteosynthesis performed using 2 different techniques in combination with THA in an experimental model.
  
  
  METHODS
  We conducted 20 experiments using the left-side hemipelves composite bone models. There were 2 testing groups: 1- and 2-stage osteosynthesis. The acetabular fractures of the anterior column and posterior hemitransverse were simulated. The same THA technique was used in both groups. The stability of osteosynthesis was explored and compared between the groups by measuring the fracture displacement of anterior and posterior columns under the standardized test load (1187 N) protocol. Load distance diagrams were generated.
  
  
  RESULTS
  The 0.680-mm gap (0.518; 1.548) of the posterior column in the 1-stage group (n = 10) was higher than the 0.370-mm gap (0.255; 0.428) in the 2-stage group (n = 10; P = .002). There was no significant difference between the gap of the anterior column in the 1- and 2-stage groups (0.135 [0.078; 0.290] mm vs 0.160 [0.120; 0.210] mm; P = .579).
  
  
  CONCLUSIONS
  The 2-stage osteosynthesis of the anterior and posterior columns in combination with THA provides better stability of posterior column when compared to 1-stage method in composite bone models.
authors.affiliation: Clinic of Rheumatology, Traumatology Orthopaedic and Reconstructive Surgery, Medical Faculty, Centre of Orthopedics and Traumatology, Republican Vilnius University Hospital, Vilnius University, Vilnius, Lithuania.
authors.forename: Valentinas
authors.initials: V
authors.lastname: Uvarovas
authors.affiliation: Clinic of Rheumatology, Traumatology Orthopaedic and Reconstructive Surgery, Medical Faculty, Centre of Orthopedics and Traumatology, Republican Vilnius University Hospital, Vilnius University, Vilnius, Lithuania.
authors.forename: Igoris
authors.initials: I
authors.lastname: Šatkauskas
authors.affiliation: Department of Mechatronics and Robotics, Vilnius Gediminas Technical University, Vilnius, Lithuania.
authors.forename: Robertas
authors.initials: R
authors.lastname: Urbonavičius
authors.affiliation: Department of Mechatronics and Robotics, Vilnius Gediminas Technical University, Vilnius, Lithuania.
authors.forename: Vytautas
authors.initials: V
authors.lastname: Bučinskas
authors.affiliation: Department of Biomechanics, Vilnius Gediminas Technical University, Vilnius, Lithuania.
authors.forename: Julius
authors.initials: J
authors.lastname: Griškevičius
authors.affiliation: Department of Orthopedics and Traumatology, Republican Vilnius University Hospital, Vilnius, Lithuania.
authors.forename: Vytautas
authors.initials: V
authors.lastname: Vengrauskas
authors.affiliation: Department of Orthopedics and Traumatology, Republican Vilnius University Hospital, Vilnius, Lithuania.
authors.forename: Giedrius
authors.initials: G
authors.lastname: Petryla
authors.affiliation: Department of Orthopedics and Traumatology, Republican Vilnius University Hospital, Vilnius, Lithuania.
authors.forename: Povilas
authors.initials: P
authors.lastname: Masionis
authors.affiliation: Clinic of Anaesthesiology and Intensive Care, Faculty of Medicine, Vilnius University, Vilnius, Lithuania.
authors.forename: Audrius
authors.initials: A
authors.lastname: Andrijauskas
authors.affiliation: Clinic of Rheumatology, Traumatology Orthopaedic and Reconstructive Surgery, Medical Faculty, Centre of Orthopedics and Traumatology, Republican Vilnius University Hospital, Vilnius University, Vilnius, Lithuania.
authors.forename: Narūnas
authors.initials: N
authors.lastname: Porvaneckas
keywords: acetabular fracture; biomechanical test; elderly patients; osteoporosis; primary total hip arthroplasty