James Woodburn

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The purpose of this paper is to describe a framework for evaluating image segmentation algorithms. Image segmentation consists of object recognition and delineation. For evaluating segmentation methods, three factors-precision (reliability), accuracy (validity), and efficiency (viability)-need to be considered for both recognition and delineation. To assess(More)
OBJECTIVE To develop a new foot impact scale to assess foot status in rheumatoid arthritis (RA) using established qualitative methodology and the latest item response techniques (Rasch analysis). METHODS Foot problems in RA were explored by conducting qualitative interviews that were then used to generate items for a new foot impact scale. Further(More)
OBJECTIVE To evaluate the three-dimensional (3D) kinematics of the ankle joint complex (AJC) in rheumatoid arthritis (RA) patients with painful valgus deformity of the rearfoot. METHODS Fifty patients with RA underwent gait analysis using electromagnetic tracking techniques to measure 3D kinematics at the AJC under barefoot and shod walking conditions.(More)
OBJECTIVE To investigate the clinical effectiveness of early foot orthosis intervention for painful correctable valgus deformity of the rearfoot in rheumatoid arthritis (RA). METHODS Patients with RA were randomized to receive custom manufactured rigid foot orthoses under podiatry supervision (n = 50) or enter a control group (n = 48). The control group(More)
BACKGROUND Rheumatoid arthritis is a chronic inflammatory joint disease which affects the joints and soft-tissues of the foot and ankle. The aim of this study was to evaluate biomechanical foot function and determine factors associated with localised disease burden in patients with this disease. METHODS Seventy-four rheumatoid arthritis patients (mean(More)
BACKGROUND Evidence suggests that foot problems are common in juvenile idiopathic arthritis (JIA), with prevalence estimates over 90%. The aim of this survey was to describe foot-related impairment and disability associated with JIA and foot-care provision in patients managed under modern treatment paradigms, including disease-modifying anti-rheumatic drugs(More)
OBJECTIVE To investigate the relation between the position of the rearfoot and the distribution of forefoot plantar pressures and skin callosities in rheumatoid arthritis. METHOD Plantar pressures and callosity patterns were measured in 102 rheumatoid arthritis patients (120 feet with normal heel alignment and 84 feet with valgus heel alignment measured(More)
OBJECTIVE To compare gait and foot function between rheumatoid arthritis (RA) patients with painful pes planovalgus deformity and healthy age- and sex-matched adults. METHODS Gait analysis was undertaken in 23 RA patients (14 female and 9 male, mean age 52.3 years, mean disease duration 6.6 years) and 23 healthy adults (14 female and 9 male, mean age 49.5(More)
OBJECTIVES The aim of this pilot study was to compare clinical examination (CE) and ultrasound (US) with high field MRI (as the reference standard) for the detection of rearfoot and midtarsal joint synovitis and secondly tenosynovitis of the ankle tendons in patients with established rheumatoid arthritis (RA). METHODS Patients with RA (as determined by(More)