Sharpey's fibres

Sharpey's fibres (also known as perforating fibers) are a type of connective tissue that anchor the periosteum to the bone. They are named after William Sharpey, a 19th-century Scottish anatomist.

Etymology

The term "Sharpey's fibres" is derived from the name of William Sharpey, who first described these structures. Sharpey was a prominent anatomist and physiologist in the 19th century, and he is often referred to as the "father of English histology."

Structure and Function

Sharpey's fibres are composed of collagen and are part of the periosteum, the membrane that covers the outer surface of all bones, except at the joints of long bones. These fibres penetrate into the outer layer of the bone, anchoring the periosteum to the bone and allowing for the transmission of forces from the muscle to the bone.

In addition to their role in anchoring the periosteum, Sharpey's fibres also play a role in the healing of bone fractures. They provide a pathway for cells and nutrients to reach the fracture site, aiding in the repair process.

Clinical Significance

Changes in the structure or function of Sharpey's fibres can have significant clinical implications. For example, diseases that affect collagen, such as Ehlers-Danlos syndrome, can disrupt the function of Sharpey's fibres and lead to problems with bone health. Additionally, damage to Sharpey's fibres can occur during orthopedic surgeries, potentially leading to complications such as non-union of fractures.

Related Terms

• Periosteum
• Collagen
• Ehlers-Danlos syndrome
• Bone fracture
• Orthopedic surgery

See Also

• William Sharpey
• Histology
• Connective tissue

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