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Foot orthoses are commonly prescribed by health professionals as a form of intervention for the symptomatic foot in rheumatoid arthritis. However, there is a limited evidence base to support the use of foot orthoses in this patient group. This article provides a critical review of the use of foot orthoses in the management of rheumatoid arthritic foot pathologies. A search was conducted in the Cochrane Controlled Trials Register (current issue of the Cochrane Library), Physiotherapy evidence database (PEDro), Medline, The Cumulative Index to Nursing and Allied Health Literature (CINAHL) and Allied and Complementary Medicine (AMED) and from reference lists in journal articles. The language was restricted to English. Searching of the databases was undertaken between December 2004 and March 2005. The results indicated there is no consensus of opinion on the choice of foot orthoses used for the management of pathology in the rheumatoid foot, although there is strong evidence that foot orthoses do reduce pain and improve functional ability. The type of foot orthoses used ranged from simple cushioned insoles to custom-made rigid cast devices. Methodological issues raised included small sample size and poor use of valid and reliable outcome measures. There is limited evidence pertaining to cost-effectiveness. The results indicated a need for further investigation into the most clinically and cost-effective foot orthoses to prescribe in the management of the rheumatoid arthritic foot. This review highlights the need to identify the various types of foot orthoses that are most effective in the management of the established rheumatoid arthritic foot.
OBJECTIVE: To evaluate the effectiveness of foot orthoses using the foot function index (FFI) in a group of patients with rheumatoid arthritis (RA) during a period of 6 months.
METHODS: Thirty-six rheumatoid subjects with foot pain were examined and appropriate foot orthoses were prescribed according to each patient's needs. All the patients were evaluated 30, 90 and 180 days after the baseline visit. FFI values, daily time of wearing the orthoses and adverse effects were noted at each appointment. The Stanford Health Assessment Questionnaire (HAQ) was used at the initial visit to evaluate the influence of physical condition on FFI response.
RESULTS: With the use of foot orthoses, FFI values decreased in all subscales (pain, disability and activity limitation). This reduction was noted in the first month and was maintained throughout the trial. Those using EVA (ethyl-vinyl acetate; n = 28) orthoses presented results similar to those for the total group. Patients wearing made-to-measure orthoses (n = 8) exhibited higher initial FFI values and worse evolution during the trial, significant for pain and disability but not for activity limitation. Minor adverse reactions were noted; none required interruption of treatment. There was no relation between HAQ and FFI evolution.
CONCLUSIONS: Foot orthoses were effective as an adjuvant in the management of rheumatoid foot. They significantly reduced pain, disability and activity limitation, as measured by the FFI, with minor adverse effects.
Foot orthoses in rheumatoid arthritis
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