The video shows a series of X-ray images of a person's leg, with a focus on the femur bone. The images are in black and white, and the femur bone is highlighted in red. The video progresses through different stages of the bone's growth, showing the femur at various lengths. The images are arranged in a grid format, with each image labeled with a number. The video also includes a close-up shot of the femur bone, which is white and appears to be made of bone tissue. The background of the video is blue, and there is a caption at the bottom that reads "FEMUR GROWS BONES."