Secondary outcome measures will include the function , footwear and general foot health subscales of the FHSQ , severity of pain and stiffness at the first metatarsophalangeal joint ( measured using 100 mm visual analog scales ) , global change in symptoms ( using a 15-point Likert scale ) , health status ( using the Short-Form-12 Version 2.0 questionnaire ) , use of rescue medication and co-interventions to relieve pain , the frequency and type of self-reported adverse events and physical activity levels ( using the Incidental and Planned Activity Questionnaire ) .