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Have you ever wondered what makes your back so strong and flexible? Or how your spine helps you move, play, and explore the world around you? Get ready to discover the incredible back facts for kids! From its super strong support to the amazing messages it sends through the spinal cord, your backbone is like a superhero inside you. 1
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The spine's remarkable flexibility allows it to bend ⅔ and flex, forming nearly two-thirds of a circle when separated from the body. This exceptional range of motion supports various activities, from bending forward to twisting sideways, which is crucial for everyday movements and activities. 1
Similar to your brain, your spinal cord has gray and white matter. Gray matter handles processing information, while white matter acts as a communication highway, sending signals between your brain and the rest of your body. 2
The spinal cord weighs approximately 35 grams, yet it plays an incredibly vital role in the body. Despite its relatively small weight, it is essential for transmitting signals between the brain and the rest of the body, facilitating movement, sensation, and various bodily functions.3

The hero shrew, a small African mammal, possesses an extraordinarily robust spine capable of supporting the weight of a human. This incredible adaptation allows it to navigate its subterranean environment, digging through tough soil and confronting predators with remarkable resilience.
Men typically have longer spines, averaging 71 cm, while women's spines average 61 cm, reflecting subtle anatomical variations between genders. These differences influence overall body proportions and contribute to posture and physical characteristics variations. 4
By age 18, five bones at the base of the spine fuse to form the sacrum, a triangular bone crucial for stability and weight distribution in the lower back. This fusion process enhances spinal strength and supports the body's posture during various activities.5
Computer-assisted navigation, robotic, and augmented reality technologies enhance screw placement accuracy during spine surgery, improving outcomes and reducing risks. These advanced technologies significantly enhance screw placement accuracy, minimizing risks of nerve damage. 6
Smoking significantly increases the risk of back pain by reducing blood flow to the spine and weakening bones. These effects hinder the healing of injuries and diminish overall bone strength, making smokers more susceptible to chronic back problems. 7
Both humans and giraffes have seven neck vertebrae, demonstrating a surprising anatomical similarity despite their vastly different sizes and lifestyles. This shared feature suggests evolutionary adaptations that support upright posture and efficient movement of the neck. 8
Comprising over 120 muscles, about 220 ligaments, and approximately 100 joints, the spine's complex composition supports and facilitates movement throughout the entire body. These components work in tandem to provide stability, flexibility, and support for daily activities. 9
Housing a dense network of 13.5 million neurons in the spinal cord, the spine plays a critical role in transmitting sensory and motor signals. This neuronal network facilitates communication between the brain and the body. 10
More than 90% of the global population experiences back pain, predominantly in the lower back. This widespread issue underscores the spine's vulnerability to strain, injury, and degenerative conditions, impacting individuals of all ages and lifestyles. 11

The greatest weight ever lifted by a human is 2,422.18 kg (5,340 lb), achieved by Gregg Ernst (Canada) on July 28, 1993. He backlifted two cars with drivers on a platform at the South Shore Exhibition, Nova Scotia.
Divided into distinct sections, the spine includes the cervical spine (neck) with seven bones, the thoracic spine (upper back) with twelve, and the lumbar spine (lower back) with five. Each section serves unique functions in posture, movement, and spinal cord protection. 12
The first spinal surgery, conducted by Dr. William Halsted in 1890, was a groundbreaking achievement. This pioneering procedure advanced spinal care, setting the stage for modern orthopedic and neurosurgical techniques. 13
The longest back of a living person (female) is 59.90 cm (23.58 in), held by Rumeysa Gelgi (Turkey), verified on February 19, 2022, in Karabuk. This record measures from the Thoracic (T1) to the Lumbar (L5) region. 14

Astronauts often return slightly taller from space missions due to reduced gravitational pressure on spinal discs. This absence of gravity allows spinal discs to expand and elongate, temporarily increasing an astronaut's height until returning to Earth's gravity.
The spine begins developing in babies just two months after conception, making it one of the earliest skeletal structures to form during fetal development. This early development underscores the spine's role in supporting prenatal growth and shaping overall body structure. 15
Unlike many mammals, humans typically have 24 vertebrae, as some fuse over time, forming the sacrum and coccyx. These fused bones provide essential stability and flexibility, adapting to changes in posture and supporting the body's weight throughout life.16
Due to fluid-filled spinal discs, individuals are typically taller in the morning than in the evening. These discs compress under gravitational pressure throughout the day, causing a slight reduction in height by evening. 17