Movement mechanics determine how lifelike a doll feels and how durable it remains over time. Most dolls rely on an internal skeletal system with joints such as ball‑and‑socket or hinge types, bolstered by a flexible skin layer. The range of motion depends on the joint design, material stiffness, and the weight distribution of the doll. Heavier dolls or those with limited joint flexibility may feel stiff, while well‑engineered joints provide smooth posing and posing stability.
Regular inspection of joints for looseness, creaking, or binding is prudent. If a joint feels stiff, avoid forcing movement and consult a professional if needed. Lubrication should be limited to materials and lubricants compatible with the doll’s skin and internal components; avoid petroleum-based products that can degrade surfaces. Proper storage helps maintain alignment and reduces wear on moving parts. A doll with good mechanics benefits from thoughtful handling, routine checks, and appropriate lubrication when advised by the manufacturer or a qualified technician.