Two books on the Ponseti method of treating clubfoot are kindly available online for free. See this web page for details.
http://www.global-help.org/publications/books/book_cfponseti.html
Clubfoot: Ponseti Management. 2nd ed. 2006 (32 pages)
978-1-60189-001-6
and at
http://www.ponseti.info/pia/
Congenital Clubfoot: Fundamentals of Treatment. by Ignacio Ponseti
(provided to you through the generosity of the Department of Orthopaedic Surgery and Rehabilitation at the University of Iowa and the Ponseti International Association) -- although that book is temporarily unavailable while the access is upgraded.
This page from Global-HELP lists a couple of additional clubfoot resources:
http://www.global-help.org/categories/categories_clubfoot.html