title: Distal radius fracture fixation with volar locking plates and additional bone augmentation in osteoporotic bone: a biomechanical study in a cadaveric model.
abstract: BACKGROUND
  Fractures of the distal radius represent the most common fractures in adults. Volar locked plating has become a popular method for treating these fractures, but has been subject to several shortcomings in osteoporotic bone, such as loss of reduction and screw purchase. In order to overcome these shortcomings, cement augmentation has been proposed.
  
  
  METHODS
  AO-type 23-A3.3 fractures were made in 8 pairs of fresh frozen osteoporotic cadaveric radial bones. All specimens were treated with volar plating, and divided into cement augmentation or non-augmentation groups (n = 8/group). Constructs were tested dynamically and load to failure, construct-stiffness, fracture gap movement and screw cutting distance were measured.
  
  
  RESULTS
  Cement augmentation resulted in a significant increase in cycles and load to failure, as well as construct stiffness at loads higher than 325 N. When compared to the non-augmented group, fracture gap movement decreased significantly at this load and higher, as did screw cutting distance at the holes of the ulnar column. The cycles to failure depend on the BMD in the distal region of the radius.
  
  
  CONCLUSIONS
  Cement augmentation improves biomechanical properties in volar plating of the distal radius.
authors.affiliation: Berufsgenossenschaftliche Unfallklinik Murnau, Prof. Küntscher Str. 8, 82418 Murnau, Germany. florian.hoegel@bgu-murnau.de
authors.forename: F
authors.initials: F
authors.lastname: Högel
authors.forename: S
authors.initials: S
authors.lastname: Mair
authors.forename: S
authors.initials: S
authors.lastname: Eberle
authors.forename: P
authors.initials: P
authors.lastname: Weninger
authors.forename: G
authors.initials: G
authors.lastname: von Oldenburg
authors.forename: P
authors.initials: P
authors.lastname: Augat
mesh_terms: D000368:Aged; D001696:Biomechanical Phenomena; D001843:Bone Cements; D001860:Bone Plates; D016025:Bone Transplantation; D002102:Cadaver; D005260:Female; D005593:Fracture Fixation, Internal / Q000379:methods*; D006801:Humans; D008297:Male; D010024:Osteoporosis / Q000503:physiopathology / Q000601:surgery*; D011885:Radius Fractures / Q000503:physiopathology / Q000601:surgery*
chemical_list: D001843:Bone Cements