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Characteristics: The model consists of 1.5 times the 4th and 5th lumbar spine and intervertebral disk spinal nerves. Disks are made of soft elastomers, user-friendly demonstration. The model of lumbar disk herniation shows when humans bend and curl, what happens to the distribution of intervertebral disks. The model is widely used in orthopedic, surgery, clinical teaching, prevention of occupational diseases, ergonomics, physical education and other areas. Have good auxiliary teaching and demonstration function. The product is lightweight, easy to teach and demonstrate. The model is very close to the real state of the body 's structure.