Clinical Effects of Incobotulinum Toxin vs Corticosteroid in Plantar Fascitis

Clinical Effects of the Intralesional Application of Incobotulinum Toxin vs Corticosteroid in Patients With Plantar Fascitis

Objectives: To evaluate the clinical effects of intralesional application of incobotulinum toxin vs corticosteroid in patients with plantar fasciitis .

Material and methods: Prospective, experimental, randomized, controlled clinical study; the population will be recruited in the outpatient clinic of the rehabilitation service meeting the inclusion criteria, two randomized study groups will be formed: GROUP A: Patients who accept intralesional infiltration with incobotulinum toxin . GROUP B: Patients who accept intralesional infiltration with dexamethasone.

Both groups will be assessed before application, at 1 month, at 2 and 4 months post intervention. The visual analogue scale (VAS), the American Orthopaedic Foot and Ankle Society (AOFAS) scale and the Foot and Ankle Disability Index (FADI) will be used to assess pain, foot functionality, functional disability index in activities of daily living, in physical activity and measurement of the dorsiflexion arch in 2 visits at the beginning of diagnosis and at 4 months, collecting the variables and establishing a hypothesis analysis to accept or discard normality criteria of the same with tendency and its significance in relation to p <0.05 to establish contrast of the results with parametric or non-parametric variables according to whether or not the hypothesis of normality is discarded.

The investigators want to compare the effects on pain, ankle and foot functionality, as well as activities of daily living; of the application of incobotulinum toxin vs corticosteroid in people suffering from plantar fasciitis.

Inclusion Criteria:

1. Age over 18 years.
2. Any sex.
3. Diagnosis of plantar fasciitis (pain in the medial plantar calcaneal tubercle which gives rise to the site of plantar fascial insertion into the heel bone and/or pain along the path of its three bands) made by a physician specializing in Physical Medicine and Rehabilitation.
4. Voluntary acceptance of participation in the study.
5. Patients entitled to the Mexican Social Security Institute.

Exclusion Criteria:

1. Diagnosis of ankylosing spondylitis.
2. Pregnant women.
3. Previous infiltration treatment with any medication or substance applied to the plantar fascia or gastrocnemius muscles in the last six months.
4. Anticoagulant treatment.
5. History of local infection in the plantar fascia in the last three months.
6. Allergic to lidocaine, incobotulinum toxin or dexamethasone.
7. Patients not entitled to the Mexican Social Security Institute.
8. Patient's refusal to participate in the study.