Dye reviews the evolutionary origins and functional morphology of the human knee, asking why the joint is anatomically asymmetric and what that asymmetry means for kinematics. Using cadaveric cine-CT and cine-MRI data alongside paleontological evidence, the paper traces the knee's design from Devonian lobe-finned fish through modern tetrapods to explain normal human knee motion.
When designing or selecting knee braces or implants, remember that medial and lateral compartments move differently — a brace with identical medial and lateral hinges cannot follow true knee kinematics, and implants that ignore differential lateral rollback replicate neither normal motion nor the evolutionary design that has survived 300 million years of functional demand.
Dye reviews the evolutionary origins and functional morphology of the human knee, asking why the joint is anatomically asymmetric and what that asymmetry means for kinematics. Using cadaveric cine-CT and cine-MRI data alongside paleontological evidence, the paper traces the knee's design from Devonian lobe-finned fish through modern tetrapods to explain normal human knee motion.
When designing or selecting knee braces or implants, remember that medial and lateral compartments move differently — a brace with identical medial and lateral hinges cannot follow true knee kinematics, and implants that ignore differential lateral rollback replicate neither normal motion nor the evolutionary design that has survived 300 million years of functional demand.