1. Grant's Atlas of Anatomy. 8th ed;Anderson,1983
2. Functional Anatomy of the Limbs and Back. 5th ed;Hollinshead,1981
3. Normal and Abnormal Function of the Foot;Root,1977
4. Basic Biomechanics of the Skeletal System;Frankel,1980
5. Anatomy of the ankle and foot;Riegger;Phys Ther,1988