Knochenhaut

Knochenhaut, also known as periosteum in medical terminology, is a dense layer of vascular connective tissue that covers the outer surface of all bones, except at the surfaces of the joints. It plays a crucial role in bone health and function. The periosteum is composed of two distinct layers: an outer fibrous layer and an inner cellular layer. The outer layer consists mainly of collagen fibers and provides attachment points for muscles, tendons, and ligaments. The inner cellular layer is rich in osteoblasts, the cells responsible for bone formation, and osteoclasts, which are involved in bone resorption.

This dual nature allows the periosteum to contribute significantly to bone growth in thickness, especially during childhood and adolescence. It also plays a vital role in bone repair after fractures, as the osteoblasts within its inner layer proliferate and deposit new bone tissue to mend the break. Furthermore, the periosteum provides a blood supply to the outer layers of the bone through its numerous blood vessels. This vascularity is essential for nourishing bone tissue and facilitating healing processes. The sensitivity of the periosteum to pain is also notable, as it contains numerous nerve endings, explaining why injuries involving this membrane can be intensely painful.