Knochenkanäle

Knochenkanäle are channels or canals within bones that allow for the passage of blood vessels, nerves, and other tissues. These channels are a characteristic feature of the internal structure of bones in vertebrates.

In the formation of long bones, such as the femur or tibia, Knochenkanäle are formed as a result of the endochondral ossification process. This process involves the transformation of cartilage into bone tissue, where the cartilage is gradually replaced by bone matrix. During this process, the cartilage cells (chondrocytes) within the epiphyseal plate are gradually squeezed out, creating channels or canals that become the Knochenkanäle.

Knochenkanäle are typically found within long bones, starting from the shaft (diaphysis) and extending into the growth plate (epiphyseal plate) in long bones. The canals may vary in diameter, depth, and course, depending on the location and specific bone type. The contents of the Knochenkanäle variously consist of nerves, blood vessels, and, in some cases, synovial fluid.

While the existence and purpose of Knochenkanäle have been acknowledged, there is ongoing debate regarding their specific functional role. Previous theories have suggested that Knochenkanäle protected nerves and blood vessels within bones from destructive forces during movement, while more recent studies indicate a possible support or structural function in maintaining bone stability and integrity.

Knochenkanäle can be observed in cross-sections or longitudinal sections of bones, such as in the histopathology of fractures or other pathologies where bone resorption and regeneration may occur.