The articulation and movement capabilities of sex dolls vary widely, influencing their realism and usability. Basic models typically have limited joint movement, restricting poses to a few static positions. These dolls often have rigid limbs and lack flexibility, which can limit their realism and comfort. In contrast, high-end dolls feature multiple articulating points, including shoulders, elbows, wrists, hips, knees, and ankles, allowing for a broad range of natural poses. These dolls often use flexible skeletons or internal frameworks that enable smooth, realistic movements.
Some advanced models incorporate even more sophisticated articulation, such as movable jaw, neck, and waist joints, enabling expressive posing and more lifelike interactions. The quality of movement depends heavily on the design and engineering behind the joints; smoother, more durable joints provide better mobility and longevity. Additionally, some dolls are equipped with motorized or pneumatic systems that facilitate dynamic movements, though these are less common and typically more expensive. Overall, the key difference lies in the complexity and range of joint articulation, with high-end models providing superior flexibility, natural movement, and posing options that closely mimic real human motion.