Edition 2006 Lippincott Williams & Wilkins Engelbert et al., Idiopathic toe-walking in children, adolescents and young adults: a matter of local or generalised stiffness?, BMC Musculoskeletal Disorders 2011, 12:61 S. Zimbler, Idiopathic Toe Walking: Current Evaluation and Management, Children’s Hospital Pähr Engström, Idiopathic Toe-Walking in Children; Prevalence, Neuropsychiatric Symptoms and the Effect of Botulinum Toxin A Treatment, Department of women's and children's, Karolinska Institutet, Sweden