What defines a "kinematic chain" in biomechanics?

A "kinematic chain" in biomechanics is defined as a sequence of segments connected by joints. This concept is fundamental in understanding how movements in the body are coordinated and how forces are transmitted through various body parts during activities such as walking, running, or jumping.

In a kinematic chain, each segment plays a role in the overall movement pattern. The joints act as pivots that allow the segments (bones or limbs) to move relative to one another. This connection is crucial for analyzing how motion occurs, as it highlights the contribution of each segment to the efficiency and effectiveness of the movement. For instance, in a simple action like throwing a ball, the arm, shoulder, and torso work together in a coordinated manner, reflecting the interconnected nature of the kinematic chain.

The other options do not accurately capture the essence of a kinematic chain. While some joints may restrict movement, the overall definition focuses more on the connections and relationships between segments rather than restrictions. The kinematic chain goes beyond just static positions, emphasizing dynamic motion. Additionally, it is not solely a mechanical leverage system; instead, it encompasses a broader understanding of movement involving timing, coordination, and spatial relationships among body segments.