Botulinum toxin type A in chronic plantar fasciitis: clinical effects one year after injection.

Objective: To determine whether the efficacy of botulinum toxin type A in chronic plantar fasciitis was maintained for more than six months after treatment.

Design: Observational follow-up study.

Subjects: Twenty-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.

Randomized controlled study of the efficacy of the injection of botulinum toxin type A versus corticosteroids in chronic plantar fasciitis: results at one and six months.

Objective: To determine the efficacy of botulinum toxin type A in chronic plantar fasciitis compared to the local injection of a corticosteroid plus local anaesthetic.

Methods: Patients with a clinical diagnosis of plantar fasciitis made at least six months earlier were selected to enter a randomized, single-blind study of treatment with injections of botulinum toxin type A or corticosteroid. There were 28 patients in each treatment group.