Osteoclast: Origin and Differentiation -- Osteolytic Enzymes of Osteoclasts -- Regulation of Osteoclast Activity -- Structural Aspects of Bone Resorption -- Inflammatory Cytokines -- Genetics and Mutations Affecting Osteoclast Development and Function -- Clinical Disorders Associated with Alterations in Bone Resorption -- Pharmaceuticals for Bone Disease Targeting the Osteoclast -- Skeletal Com…