title: A randomized, single-blind comparison of the efficacy and tolerability of hylan G-F 20 and triamcinolone hexacetonide in patients with osteoarthritis of the knee.
abstract: OBJECTIVE
  To assess prospectively the efficacy and tolerability of hylan G-F 20 (HG-F 20; Synvisc) and intraarticular triamcinolone hexacetonide (TH; Aristospan) for treatment of osteoarthritis (OA) knee pain in a 26 week, randomized, multicenter, evaluator-blind study.
  
  
  METHODS
  Patients with OA were treated with typical regimens of HG-F 20 (n = 113) and TH (n = 102). Primary assessments were the WOMAC question A1 (pain walking on a flat surface), and a 100 mm visual analog scale (VAS) for patient and investigator overall assessments. Total WOMAC and WOMAC domain C (function) scores were also assessed. The intent-to-treat population was analyzed using a last-observation carried forward approach.
  
  
  RESULTS
  Maximum pain relief occurred at 1-2 weeks for TH and at Week 12 for HG-F 20. At Weeks 12 and 26, HG-F 20 was significantly better than TH for the WOMAC question A1 responses (p = 0.0071 and p = 0.0129, respectively), and patient VAS (p < 0.0001 and p < 0.0001) and investigator VAS (p < 0.0300 and p = 0.0004) assessments. Similar significant (p < 0.01) results were observed at Weeks 12 and 26 for total WOMAC and domain C scores. While 15 TH-treated patients discontinued the study due to lack of efficacy, none did so with HG-F 20 treatment (p < 0.01). Both agents were well tolerated with similar adverse event profiles.
  
  
  CONCLUSIONS
  Viscosupplementation with HG-F 20 resulted in a longer duration of effect than TH with a comparable tolerability profile. These data support the preferential use of HG-F 20 over TH for treatment of chronic OA knee pain.
authors.affiliation: Department of Orthopaedic Surgery, University of Louisville, Louisville, Kentucky 40202, USA. david.caborn@luisville.edu
authors.forename: David
authors.initials: D
authors.lastname: Caborn
authors.forename: Joel
authors.initials: J
authors.lastname: Rush
authors.forename: William
authors.initials: W
authors.lastname: Lanzer
authors.forename: Dennis
authors.initials: D
authors.lastname: Parenti
authors.forename: Christopher
authors.initials: C
authors.lastname: Murray
mesh_terms: D000368:Aged; D000893:Anti-Inflammatory Agents / Q000008:administration & dosage* / Q000009:adverse effects; D002908:Chronic Disease; D005260:Female; D006801:Humans; D006820:Hyaluronic Acid / Q000008:administration & dosage* / Q000009:adverse effects / Q000031:analogs & derivatives*; D008297:Male; D008875:Middle Aged; D020370:Osteoarthritis, Knee / Q000188:drug therapy*; D010146:Pain / Q000188:drug therapy; D011446:Prospective Studies; D016037:Single-Blind Method; D016896:Treatment Outcome; D014222:Triamcinolone Acetonide / Q000008:administration & dosage* / Q000009:adverse effects / Q000031:analogs & derivatives*
chemical_list: D000893:Anti-Inflammatory Agents; C049816:hylan; D006820:Hyaluronic Acid; D014222:Triamcinolone Acetonide; C005900:triamcinolone hexacetonide