@inbook{1180940870, author={Bella J. May and Margery A. Lockard}, title={Lower Extremity Prosthetic Management}, booktitle={Prosthetics & Orthotics in Clinical Practice}, publisher={F. A. Davis Company}, address={New York, NY}, year={2011}, url={fadavispt.mhmedical.com/content.aspx?aid=1180940870} }