Current Pedorthics | March-April 2013 | Vol. 45, Issue 2 | Page 25

FOCUS ON RESEARCH Footwear Characteristics and Factors Influencing Footwear Choice in Patients With Gout KEITH ROME, MIKE FRECKLINGTON, PETER MCNAIR, PETER GOW, AND NICOLA DALBETH O bjective. Gout is associated with foot pain, impairment, and disability. The aim of this study was to assess footwear characteristics and key factors influencing footwear choice in patients with gout. We also wanted to evaluate the relationship between footwear characteristics and foot disability. Methods. Fifty patients with a history of acute gout were recruited from rheumatology clinics during the summer months. Clinical characteristics, global function, and foot impairment and disability measures were recorded. Footwear characteristics and the factors associated with choice of footwear were identified using validated assessment tools. Suitability of footwear was assessed using predetermined criteria for assessing adequacy of footwear, based on a previous study of foot pain. Results. The patients had moderate to severe foot pain, impairment, and disability. Poor footwear characteristics included poor cushioning, lack of support, lack of stability, and motion control. More than 50% of shoes were >12 months old and demonstrated excessive wear patterns. Patients reported comfort (98%), fit (90%), support (90%), and cost (60%) as important factors in choosing their own footwear. No correlation was found between footwear characteristics (length and width) and foot characteristics (foot pain, impairment, and disability). Patients with poor footwear reported higher foot-related impairment and disability. Conclusion. Use of poor footwear is common in patients with chronic gout and is associated with foot disability and impairment. Mr. Frecklington’s work was supported by an AUT Summer Studentship. 1 Keith Rome, PhD, Mike Frecklington, BSc (Hons) Pod, Peter McNair, PhD: AUT University, Health & Rehabilitation Research Institute, 2 Auckland, New Zealand; Peter Gow, FRACP, MBChB, BMedSci: 3 University of Auckland, Auckland, New Zealand; Nicola Dalbeth, MBChB, MD, FRACP: Counties Manukau District Health Board, Auckland District Health Board, and University of Auckland, Auckland, New Zealand. Address correspondence to Keith Rome, PhD, Division of Rehabilitation & Occupation Studies, AUT University, Akoranga Drive, Private Bag 92006, Auckland 1020, New Zealand. E-mail: krome@aut. ac.nz. Submitted for publication May 25, 2011; accepted in revised form August 5, 2011. INTRODUCTION Gout is the most prevalent inflammatory arthropathy in men, caused by formation of monosodium urate crystals in joints and other tissues (1). Gout typically presents as recurrent self-limiting flares of acute joint inflammation, and in the presence of persistent hyperuricemia, chronic tophaceous disease may also develop (2). Gout displays a striking predilection to affect the feet, particularly the first metatarsophalangeal (MTP) joint, midfoot, and ankle (2– 6). We have recently reported that patients with chronic gout have changes in gait parameters focused on the mid- foot and the hallux, consistent with a pain-avoidance strategy (7). It is likely that these gait changes contribute to altered loading patterns and impaired foot function in chronic gout. Footwear has been developed and modified to provide protection from the environment, conform to fashion, assist function, accommodate foot deformities, and treat musculoskeletal injury (8). Various footwear characteristics have been linked to the development of musculoskeletal disorders such as osteoarthritis of the foot and knee, low back pain, foot ulceration, hallux valgus, and hammer toes (8). Poorly fitting shoes have also been linked to foot pain in rheumatoid arthritis (9,10). In addition to shoe features, previous studies have reported that the individual fit of a shoe is important; loose-fitting shoes can also cause excessive foot slippage within the shoe during walking and altered contact area between the foot and shoe, impairing foot stability and walking parameters (11–13). Current Pedorthics March/April 2013 23