Medial-Wedge Insoles Improved Pain and Function in Osteoarthritic Knees with Valgus Deformity

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Question: In patients with symptomatic osteoarthritis (OA) of the knee associated with a valgus deformity, do medial-wedge insoles reduce joint pain and improve function and alignment?

Design: Randomized (allocation not concealed), blinded (patients, clinician, and outcome assessors) controlled trial with follow-up at 8 weeks.

Setting: Rheumatology Division of the University of São Paulo, São Paulo, Brazil.

Patients: 30 women (mean age, 62 y) who had knee OA (according to American College of Rheumatology criteria) with bilateral valgus deformities ≥8°. Inclusion criteria were lateral compartment involvement detected on radiographs (grade ≥2 on the Kellgren-Lawrence [K-L] scale), absent or minimal involvement (K-L grade 0 or 1) in the medial compartment, and pain on movement (a score of ≥2 on visual analog scale [VAS]). Exclusion criteria were body mass index ≥40 kg/m2, scoliosis, a >1-cm difference in lower-limb length, knee surgery, hallux rigidus, rheumatologic disease, soft-tissue involvement, foot or lower-leg symptoms, or use of corticosteroid …

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