• Ismael V Díaz-Llopis, Diego Gómez-Gallego, Francisco J Mondéjar-Gómez, Alfredo López-García, Jose M Climent-Barberá, and Carmen M Rodríguez-Ruiz.
• Department of Physical Medicine and Rehabilitation, Alicante University General Hospital, Alicante, Spain. diaz_ism@gva.es
• Clin Rehabil. 2013 Aug 1;27(8):681-5.

ObjectiveTo determine whether the efficacy of botulinum toxin type A in chronic plantar fasciitis was maintained for more than six months after treatment.DesignObservational follow-up study.SubjectsTwenty-four patients who received botulinum toxin type A injection in a previous randomized study of chronic plantar fasciitis (active treatment group) and who presented a benefit one month after treatment.MethodsA visual analogue scale for pain and the Foot Health Status Questionnaire were used to re-evaluate results 12 months after the botulinum toxin injection. No further injections of botulinum toxin had been administered during the follow-up period. Patients were also asked to give a subjective assessment of treatment outcome.ResultsAt 12 months, compared with the six-month evaluation, there was a further improvement in foot pain measured using the visual analogue scale, though this did not reach significance (1.78 at 6 months versus 1.22 at 12 months; P = 0.142). However, there were significant improvements in two domains of Foot Health Status Questionnaire: foot pain (91.11 at 6 months versus 80.00 at 12 months; P = 0.001) and foot function (96.19 at 6 months versus 89.38 at 12 months; P = 0.047). There was a small, non-significant deterioration in the shoe and foot health domains. Satisfaction with the outcome was good or very good in the large majority of patients.ConclusionsIn patients with chronic plantar fasciitis, the positive effect detected six months after treatment with botulinum toxin type A was maintained at 12 months and there was a further improvement in pain and foot function.

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