Foot orthoses for first metatarsophalangeal joint osteoarthritis

NewsBot · Mar 11, 2022

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Effect of foot orthoses versus sham insoles on first metatarsophalangeal joint osteoarthritis symptoms: a randomized controlled trial
Kade L Paterson, Rana S Hinman, Ben R Metcalf, Fiona McManus, Sarah E Jones, Hylton B Menz, Shannon E Munteanu, Kim L Bennell
Osteoarthritis Cartilage. 2022 Mar 7;S1063-4584(22)00655-0

Objectives: To compare contoured foot orthoses to sham flat insoles for first MTP joint OA walking pain.

Design: This was a participant- and assessor-blinded, sham-controlled, multi-centre randomized clinical trial set in community-based private practices. Eighty-eight adults aged >45 years with symptomatic radiographic first MTP joint OA were randomized to receive contoured foot orthoses (n=47) or sham flat insoles (n=41), worn at all times when wearing shoes for 12 weeks. Primary outcome was change in first MTP joint walking pain (11-point numerical rating scale (NRS), 0-10) over 12 weeks. Secondary outcomes included additional first MTP joint and foot pain measures, physical function, quality of life and physical activity. Separate linear regression models for primary and secondary outcomes on treatment group were fit, adjusting for the outcome at baseline and podiatrist. Other measures included adverse events.

Results: 88 participants were randomized and 87 (99%) completed the 12-week primary outcome. There was no evidence foot orthoses were superior to sham insoles for reducing pain (mean difference -0.3 NRS units (95% CI -1.2 to 0.6), p=0.53). Similarly, foot orthoses were not superior to sham on any secondary outcomes. Sensitivity analyses yielded similar results. Adverse events were generally minor and transient.

Conclusion: Contoured foot orthoses are no more effective than flat sham insoles for the clinical management of first MTP joint OA. Given the dearth of evidence on treatments for first MTP joint OA, further research is needed to identify effective management approaches for this common and debilitating condition.
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NewsBot · Mar 11, 2022

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