title: Efficacy and Safety of Aceclofenac Controlled Release in Patients with Knee Osteoarthritis: A 4-week, Multicenter, Randomized, Comparative Clinical Study.
abstract: OBJECTIVE
  To evaluate the analgesic effect, efficacy and safety of aceclofenac controlled release (CR) in patients with chronic knee osteoarthritis (OA).
  
  
  METHODS
  A total of 125 subjects with chronic knee OA were randomly divided into two groups: one group (n=62) was administered aceclofenac CR once daily and the other (n=63), aceclofenac immediate release (IR) twice a day for 4 weeks. A 100-mm visual analogue scale (VAS), Knee injury and Osteoarthritis Outcome Score (KOOS) and range of motoin (ROM) were evaluated as the outcome measures. To evaluate the safety of the drug, adverse events, vital signs, physical examination findings, clinical laboratory values and electrocardiographic findings were evaluated.
  
  
  RESULTS
  The VAS, KOOS and ROM were improved after 4 weeks of administration in both groups, but the differences between the two groups were not statistically significant. Significant differences between the two groups were not shown in the evaluation of the adverse events, vital sign, physical examination results, clinical laboratory values, and electrocardiography.
  
  
  CONCLUSIONS
  The aceclofenac CR and aceclofenac IR were equally effective in patients with chronic knee OA and the clinical trial results didn't show any significant difference in safety. The new aceclofenac CR formulation was found to be effective and safe with the practical advantage of once daily administration.
authors.affiliation: Department of Orthopedic Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
authors.forename: Young-Wan
authors.initials: YW
authors.lastname: Moon
authors.affiliation: Department of Orthopedic Surgery, Seoul National University Boramae Hospital, Seoul, Korea.
authors.forename: Seung-Baik
authors.initials: SB
authors.lastname: Kang
authors.affiliation: Department of Orthopedic Surgery, Seoul National University Bundang Hospital, Seongnam, Korea.
authors.forename: Tae-Kyun
authors.initials: TK
authors.lastname: Kim
authors.affiliation: Department of Orthopedic Surgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea.
authors.forename: Myung-Chul
authors.initials: MC
authors.lastname: Lee
keywords: Aceclofenac; Controlled-release preparations; Knee; Osteoarthritis