title: Functional outcome in knee osteoarthritis after treatment with hylan G-F 20: a prospective study.
abstract: OBJECTIVE
  To assess functional change in patients with knee osteoarthritis (OA) after treatment with intra-articular hyaluronic acid (Hylan G-F 20; Synvisc).
  
  
  METHODS
  Prospective case series with 6-month follow-up.
  
  
  METHODS
  Outpatient community orthopedic practice.
  
  
  METHODS
  Eighty-four consecutive patients referred to private orthopedic group with symptoms and radiographic evidence of unilateral or bilateral knee OA who had either failed or could not tolerate the side effects of conservative treatment. Sixty-one patients completed the study. Nineteen patients were lost to follow-up. Four patients withdrew from study due to subsequent knee arthroplasty.
  
  
  METHODS
  Three weekly injections of Hylan G-F 20 into one or both (if bilaterally symptomatic) knees (110 knees total).
  
  
  METHODS
  SF-36 Health Survey was completed before treatment and 6 months after treatment.
  
  
  RESULTS
  Statistically significant improvement (p < .001) in Physical Functioning, Role-Physical, Bodily Pain, Social Functioning, and Role-Emotional categories on 6-month follow-up survey. Age and percent above ideal body weight were not significant predictors of functional change.
  
  
  CONCLUSIONS
  Efficacy of intra-articular injection of Hylan G-F 20 for knee OA 6 months after injection is demonstrated in several categories of the SF-36, indicating a measurable improvement in overall functioning in these patients.
authors.affiliation: University of Cincinnati College of Medicine, OH, USA.
authors.forename: S D
authors.initials: SD
authors.lastname: Goorman
authors.forename: T K
authors.initials: TK
authors.lastname: Watanabe
authors.forename: E H
authors.initials: EH
authors.lastname: Miller
authors.forename: C
authors.initials: C
authors.lastname: Perry
mesh_terms: D000276:Adjuvants, Immunologic / Q000008:administration & dosage / Q000627:therapeutic use*; D000368:Aged; D005260:Female; D006305:Health Status Indicators; D006801:Humans; D006820:Hyaluronic Acid / Q000008:administration & dosage / Q000627:therapeutic use*; D007270:Injections, Intra-Articular; D008297:Male; D008875:Middle Aged; D020370:Osteoarthritis, Knee / Q000188:drug therapy*; D011446:Prospective Studies; D016896:Treatment Outcome
chemical_list: D000276:Adjuvants, Immunologic; D006820:Hyaluronic Acid