Knee Training: Tibia Rotation 2/3, Although our knees largely straightens and bends, the rotation of the shin matters quite a bit because that tissue is deeper within our knee; if the knee can’t rotate in either direction then flexion and extension are negatively influenced. There isn’t a ton of range of motion within the tibia, but that doesn’t make it insignificant. When learning to move it, we want to learn to engage the hamstrings and feel their contributions to the rotation. It’s really eas