Efficacy of One or Two Botulinum Toxin Injections in the Treatment of Chronic Lateral Epicondylalgia: a Retrospective Study (EPITOX)

first injection was done under ultrasound control in the extensor carpi radialis brevis (ECRB). The second one if necessary was subordinated to clinical examination and focused in one or more of the following: ECRB, extensor digitorum communis, supinator.