Combine "arthro" meaning "of a joint," and "kinematics," meaning "properties of motion of objects" and you get a cool new word, "arthrokinematics"---which is applicable in describing the motion of any joint in the body.
For example, the "roll and slide" movement of the lower end of the thigh bone, the femur, moving against the top of the larger bone in the lower leg, the tibia, when bending the knee.
Whether kicking a soccer ball (the femur is stable & the tibia is rolling & gliding) or squatting (the tibia is stable & the femur will roll & glide), the arthrokinematics are crucial to maintaining stability of the knee throughout its range of motion.
