randomized study of the efficacy and safety of a single dose of synvisc-one® in chinese patients with symptomatic osteoarthritis of the knee

Conditions: Osteoarthritis

Summary: primary objective: -to evaluate the efficacy of a single 6-milliliter (ml) intra-articular (ia) injection of hylan g-f 20 measured by western ontario and mcmaster universities osteoarthritis index (womac) numerical rating scale (nrs) 3.1 a1 score, in comparison to an ia placebo injection over 26 weeks, in chinese participants with symptomatic osteoarthritis (oa) of the knee. secondary objectives: * to evaluate the efficacy of a single 6-ml ia injection of hylan g-f 20 measured by 7-day average score of womac a1 pain sub-score in comparison to an ia placebo injection over 26 weeks. * to evaluate the efficacy of a single 6-ml ia injection of hylan g-f 20 measured by womac a, patient global assessment (ptga) and clinical observer global assessment (coga) in comparison to an ia placebo injection over 26 weeks. * to evaluate the response rate of a single 6-ml ia injection of hylan g-f 20 in comparison to an ia placebo injection over 26 weeks. response was defined as womac a1 greater than or equal to (\>=) 2-point improvement from baseline on nrs. * to evaluate the safety of a single 6-ml ia injection of hylan g-f 20, in comparison to an ia placebo injection over 26 weeks.

the duration of the study was 29 weeks at maximum. the screening and wash-out period lasted for up to 14 days, depending on the half-life of the medications followed by an 8-day baseline period including the treatment day. overall, there were up to 21 days between signing informed consent (at screening visit) and the randomization (day 1). treatment was administered on day 1, and follow-up period was 26 weeks.

Eligibility criteria:
inclusion criteria : * symptomatic oa of the target knee joint with womac a1 nrs score of \>=4.0 and less than or equal to (\<=) 8.0 as recorded in the baseline period. * confirmed by standard x-rays performed within 3 months prior to screening visit: modified kellgren-lawrence numerical grading system of grade i-iii in the target knee joint. * according to the american college of rheumatology (acr) criteria. * with failure to respond adequately to conservative non-pharmacologic therapy and/or simple analgesics, such as acetaminophen. * participant was willing and was able to provide signed informed consent prior to any study related procedures being performed. exclusion criteria: * the score of contralateral knee pain (if present) \>3.0 nrs at screening visit. * ipsilateral hip oa. * participant with systemic corticosteroids within 12 weeks prior to screening visit. * participant with injection of ia corticosteroids in the target knee joint within 26 weeks prior to screening visit. * concurrent chronic pain conditions with pain score \>3.0 nrs at screening, or peripheral or central neuropathy that may affect sensation of the target knee area, including but not limited to back pain, hip pain, disc herniation, sciatica, diabetic neuropathy, post-stroke pain or fibromyalgia. the above information was not intended to contain all considerations relevant to a participant's potential participation in a clinical trial.