title: Single, intra-articular treatment with 6 ml hylan G-F 20 in patients with symptomatic primary osteoarthritis of the knee: a randomised, multicentre, double-blind, placebo controlled trial.
abstract: OBJECTIVE
  The primary objective was to compare a single, 6 ml, intra-articular injection of hylan G-F 20 with placebo in patients with symptomatic knee osteoarthritis. The safety of a repeat injection of hylan G-F 20 was also assessed.
  
  
  METHODS
  Patients with primary osteoarthritis knee pain were randomly assigned to arthrocentesis plus a 6 ml intra-articular injection of either hylan G-F 20 or placebo in a prospective, double-blind (one injector/one blinded observer) study.
  
  
  RESULTS
  were evaluated at 4, 8, 12, 18 and 26 weeks post-injection. The primary outcome criterion was change from baseline over 26 weeks in Western Ontario and McMaster Universities (WOMAC) Osteoarthritis Index A pain. Secondary outcome measures included WOMAC A1 and C, patient global assessment (PGA) and clinical observer global assessment (COGA) and Outcome Measures in Rheumatology, Osteoarthritis Research Society International responder rates. A 4-week, open, repeat treatment phase evaluated safety only. Results: A total of 253 patients (Kellgren-Lawrence grade II or III) was randomly assigned. Patients receiving hylan G-F 20 experienced statistically significantly greater improvements in WOMAC A pain scores (-0.15, SE 0.076, p = 0.047), and several of the secondary outcome measures (WOMAC A1, PGA and COGA), than patients receiving placebo. There was no difference between the safety results of the two groups. No increased risk of local adverse events was observed in the open, repeat treatment phase.
  
  
  CONCLUSIONS
  This placebo-controlled study demonstrated that, in patients with knee osteoarthritis, a single 6 ml intra-articular injection of hylan G-F 20 is safe and effective in providing statistically significant, clinically relevant pain relief over 26 weeks, with a modest difference versus placebo.
authors.affiliation: Department of Rheumatology, Henri Mondor Hospital, University Paris XII, Bd de Lattre de Tassigny, 94010 Créteil, France. Xavier.Chevalier@hmn.aphp.fr
authors.forename: X
authors.initials: X
authors.lastname: Chevalier
authors.forename: J
authors.initials: J
authors.lastname: Jerosch
authors.forename: P
authors.initials: P
authors.lastname: Goupille
authors.forename: N
authors.initials: N
authors.lastname: van Dijk
authors.forename: F P
authors.initials: FP
authors.lastname: Luyten
authors.forename: D L
authors.initials: DL
authors.lastname: Scott
authors.forename: F
authors.initials: F
authors.lastname: Bailleul
authors.forename: K
authors.initials: K
authors.lastname: Pavelka
mesh_terms: D000368:Aged; D001672:Biocompatible Materials / Q000008:administration & dosage / Q000009:adverse effects; D004311:Double-Blind Method; D004334:Drug Administration Schedule; D005260:Female; D006801:Humans; D006820:Hyaluronic Acid / Q000008:administration & dosage / Q000009:adverse effects / Q000031:analogs & derivatives*; D007270:Injections, Intra-Articular; D008297:Male; D008875:Middle Aged; D020370:Osteoarthritis, Knee / Q000188:drug therapy* / Q000503:physiopathology; D012720:Severity of Illness Index; D016896:Treatment Outcome; D055676:Viscosupplementation / Q000009:adverse effects / Q000379:methods*; D055675:Viscosupplements / Q000008:administration & dosage* / Q000009:adverse effects
chemical_list: D001672:Biocompatible Materials; D055675:Viscosupplements; C049816:hylan; D006820:Hyaluronic Acid