Effectiveness of intra-articular hyaluronan (Synvisc, hylan G-F 20) for the treatment of first metatarsophalangeal joint osteoarthritis: a randomised placebo-controlled trial

Shannon E Munteanu, Gerard V Zammit, Hylton B Menz, Karl B Landorf, Christopher J Handley, Ayman Elzarka, Jason Deluca
Annals of the Rheumatic Diseases 2011, 70 (10): 1838-41

OBJECTIVES: To evaluate the effectiveness of a single intra-articular injection of hylan G-F 20 (Synvisc) for symptomatic first metatarsophalangeal joint (MTPJ) osteoarthritis (OA).

METHODS: Participants (n = 151) with symptomatic first MTPJ OA were randomly allocated to receive up to 1 ml intra-articular injection of either hylan G-F 20 or placebo (saline). Participants and assessors were blinded. Outcomes were evaluated at 1, 3 and 6 months after injection. The primary outcome measurement was the foot pain domain of the Foot Health Status Questionnaire (FHSQ) at 3 months. Secondary outcome measurements were foot function assessed via the FHSQ, first MTPJ pain and stiffness, magnitude of symptom change, global satisfaction, health-related quality of life (assessed using the Short-Form-36 version two), first MTPJ dorsiflexion range of motion, hallux plantar flexion strength, use of pain-relieving medication or co-interventions and changes in plantar pressures.

RESULTS: No statistically significant differences in foot pain were found between the groups at 3 months. There were few statistically significant differences in the secondary outcome measures. Overall, the incidence of adverse effects was not significantly different between groups.

CONCLUSIONS: An intra-articular injection of hylan G-F 20 is no more effective than a placebo in reducing symptoms in people with symptomatic first MTPJ OA.Australian New Zealand Clinical Trials Registry: number ACTRN12607000654459.

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