This textbook introduces the student to a consistent approach of formulating and solving problems involving the biomechanics of solids and fluids. Brief introductions are also provided for more complex situations that require methods of nonlinear elasticity, elastodynamics, viscoelasticity, or fluid-solid interactions. Concepts are motivated by concise descriptions of important biological, biomechanical, and clinical observations and techniques. Included are over 300 figures and 200 references, as well as complete derivations of the fundamental equations, solutions of over 100 example problems, and over 350 exercise problems. Perfect for a one- or two-semester introduction to biomechanics, this Third Edition includes expanded sections on complex fluid (non-Newtonian) and solid (nonlinear and anisotropic) behaviors as well as coupled problems for different tissues. Additional homework problems encourage the student to appreciate the broad applicability of the fundamental equations.  _An Introduction to Biomechanics, Third Edition_ is an ideal book for undergraduate students with interests in bioengineering, biomedical engineering, or biomechanical engineering, and serves as a valuable reference for graduate students, practicing engineers, and researchers. This book also: - Guides students in developing intuitive understanding via a consistent consideration of diverse problems including cardiovascular, musculoskeletal, pulmonary, and cell mechanics - Encourages students to develop a “big picture” approach to problem-solving in biomechanics through chapter summaries - Challenges students to solve problems for conditions commonly experienced in the laboratory, industry, or the clinic