title: Injectable calcium phosphate bone cement Norian SRS for the treatment of intra-articular compression fractures of the distal radius in osteoporotic women.
abstract: BACKGROUND
  Distal radius fracture often presents a metaphyseal void which is more extended in elderly, osteoporotic patients. Bone graft and bone substitutes are reported to be beneficial in maintaining metaphyseal reduction.
  
  
  METHODS
  We performed a prospective study on 52 menopausal, osteoporotic women with unstable intra-articular distal radius fractures to compare the outcome of percutaneous pinning and immobilisation in a cast for 6 weeks with that using injectable calcium phosphate bone cement (Norian Skeletal Repair System, SRS) to supplement pin and screw fixation and immobilisation in a cast for 3 weeks. All patients were reviewed 2 years (range 21-29 months) after surgery.
  
  
  RESULTS
  Patients treated with SRS had better functional outcome, restoration of movement and grip strength ( p<0.001). In this group there was 1 mm loss of radial length, 3 degrees loss of radial inclination and 7 degrees loss of palmar tilt. In the control group radial length decreased 3 mm, radial inclination decreased 11 degrees and palmar tilt 12 degrees. Loss of reduction was significantly higher in the control group ( p<0.001).
  
  
  CONCLUSIONS
  We conclude that the use of Norian SRS to supplement pin and screw fixation is effective in maintaining the reduction of unstable intra-articular distal radius fractures in osteoporotic patients and provides a better clinical outcome than percutaneous pinning.
authors.affiliation: Department of Trauma and Sports Medicine, University of Innsbruck, Anichstrasse 35, 6020 Innsbruck, Austria. Robert.Zimmermann@uklibk.ac.at
authors.forename: Robert
authors.initials: R
authors.lastname: Zimmermann
authors.forename: Markus
authors.initials: M
authors.lastname: Gabl
authors.forename: Martin
authors.initials: M
authors.lastname: Lutz
authors.forename: Peter
authors.initials: P
authors.lastname: Angermann
authors.forename: Martin
authors.initials: M
authors.lastname: Gschwentner
authors.forename: Sigurd
authors.initials: S
authors.lastname: Pechlaner
mesh_terms: D000368:Aged; D001843:Bone Cements; D002130:Calcium Phosphates / Q000627:therapeutic use*; D005260:Female; D005593:Fracture Fixation, Internal / Q000295:instrumentation / Q000379:methods*; D017102:Fracture Healing / Q000502:physiology; D018737:Hand Strength; D006801:Humans; D015552:Injections, Intralesional; D015601:Injury Severity Score; D008875:Middle Aged; D015663:Osteoporosis, Postmenopausal; D011336:Probability; D011446:Prospective Studies; D011885:Radius Fractures / Q000000981:diagnostic imaging / Q000601:surgery*; D016059:Range of Motion, Articular; D020127:Recovery of Function; D018570:Risk Assessment; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome; D014954:Wrist Injuries / Q000000981:diagnostic imaging / Q000601:surgery*
chemical_list: D001843:Bone Cements; D002130:Calcium Phosphates; C485828:alpha-tricalcium phosphate; C485830:tetracalcium phosphate; C485838:calcium phosphate, monobasic, anhydrous; C020243:calcium phosphate; C485829:calcium phosphate, dibasic, anhydrous