* Medical orthopaedic surgery to simulate bones. The anatomical model of medical supplies is a 1: 1 actual size cervical spine model. * High-quality prototype, made of high-quality environmentally friendly PVC, sturdy and uninterrupted handmade. * This model is a demonstration of the method used by doctors to practice implanting orthopedic hand instruments. Implanting implanted instruments, simulating bones, simulating training hands, pre-operative simulation teaching mode artificial fake bones, artificial bone models Practicing bone simulating cervical spine simulating hand training with anterior and posterior longitudinal ligaments * Suitable for school teaching tools, learning displays and collectibles, but also an important addition to laboratory supplies. It displays the structure of various human systems, facilitating systematic anatomical learning and classroom demonstrations for students and professionals, and supports repeated operation and disassembly/reassembly analysis.