Does the arrangement of lamellae around central (Haversian) canals form osteons?

Yes, the arrangement of lamellae around central (Haversian) canals forms osteons.

An osteon is a cylindrical structural unit of compact bone that consists of lamellae (concentric layers of bone matrix) arranged around a central Haversian canal, which contains blood vessels and nerves. Each lamella is made up of collagen fibers deposited by osteoblasts, the cells that build new bone. The lamellae are arranged in a regular, repeating pattern around the Haversian canal, and the osteocytes (mature bone cells) are located within small spaces called lacunae between the lamellae. The Haversian canals are interconnected by Volkmann's canals, which allow for the passage of blood vessels and nerves between adjacent osteons.

The formation of osteons is a continuous process of bone remodeling, in which old bone tissue is removed by osteoclasts (cells that break down bone) and replaced with new bone tissue by osteoblasts. This process helps to maintain the strength and integrity of the bone.