1. 1. Waters RL Perry J Antonelu D el al. Energy cosi of walking of amputees: the influence of level of amputation. J Bone Joint Surg. 1976; 58A:42-46.
2. 2. Pinzur MS Graham G Osierman H. Psychological testing in amputation rehabilitation. CHn Orthop. 1988; 229:236-240.
3. 3. Pinzur MS. New concepts in lower-limb amputalion and prosthetic management. AAOS Instructional Course Lectures 1990 39:361-366.
4. 4. Ganguli S. Datta SR. Prediction of energy cost from peak heart rate in lower extremity amputees. Biomed Eng. 1975; 10:52-55.
5. 5. Huang CT Jackson JR Moore NB et al. Amputation: energy cost of ambulation. Arch Phys Metí Reliabil. 1979:60:18-24.