title: Intra-articular administration of hylan G-F 20 in patients with symptomatic hip osteoarthritis: tolerability and effectiveness in a large cohort study in clinical practice.
abstract: OBJECTIVE
  This prospective, observational, open study aimed to assess the efficacy and safety of hylan G-F 20 in a large cohort of patients with symptomatic hip osteoarthritis (OA), and identify predictors of clinical response.
  
  
  METHODS
  Patients presenting with symptomatic hip OA received one 2 mL intra-articular (IA) injection of hylan G-F 20 under ultrasound guidance. Patients were followed-up every 3 months for a total of 12 months and were offered an optional, additional injection at each follow-up visit if symptomatically justified. At each visit, pain scores (100 mm visual analogue scale [VAS]), Lequesne index scores, NSAID intake, and physician and patient global assessments scores were recorded. Adverse events (AEs) were recorded throughout the study. MAIN OUTCOME MEASURES;
  
  
  RESULTS
  250 patients completed the 12 month follow-up and received a total of 734 injections. Statistically significant reductions in VAS pain scores, Lequesne index scores and NSAID usage were reported at all time-points (p < 0.05). No systemic, serious or severe side effects were observed. Fifty-two local AEs were reported (7.08% per injection) all of which were mild and transient. One predictor of clinical response was identified, with patients < 75 years of age reporting better outcomes.
  
  
  CONCLUSIONS
  This study supports the safety, tolerability and effectiveness of hylan G-F 20 in the treatment of symptomatic hip OA. Hylan G-F 20 may also offer economic benefits due to a reduction in NSAID usage and the resultant reduction in management costs of NSAID related side-effects. These data reflect those obtained in previous studies of hylan G-F 20 in patients with knee OA.
authors: U.O.S. of Rheumatology, Ospedale San Pietro Fatebenefratelli, Rome, Italy. albertomigliore@terra.es
authors: Alberto
authors: A
authors: Migliore
authors: Sandro
authors: S
authors: Tormenta
authors: Umberto
authors: U
authors: Massafra
authors: Emanuele
authors: E
authors: Bizzi
authors: Francesca
authors: F
authors: Iannessi
authors: Andrea
authors: A
authors: Alimonti
authors: Mauro
authors: M
authors: Granata
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D015331:Cohort Studies; D016001:Confidence Intervals; D004305:Dose-Response Relationship, Drug; D004334:Drug Administration Schedule; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D006820:Hyaluronic Acid / Q000008:administration & dosage / Q000031:analogs & derivatives*; D007270:Injections, Intra-Articular; D008297:Male; D008875:Middle Aged; D015207:Osteoarthritis, Hip / Q000000981:diagnostic imaging / Q000188:drug therapy* / Q000503:physiopathology; D010147:Pain Measurement / Q000187:drug effects*; D011446:Prospective Studies; D016059:Range of Motion, Articular / Q000187:drug effects* / Q000502:physiology; D012720:Severity of Illness Index; D018709:Statistics, Nonparametric; D016896:Treatment Outcome; D018608:Ultrasonography, Doppler
chemical_list: C049816:hylan; D006820:Hyaluronic Acid