This non-fiction medical volume by Vittorio Putti is part of a comprehensive series on the surgery of the musculoskeletal system. Volume XX likely addresses intermediate to advanced orthopaedic conditions, focusing on surgical management of bones, joints, and related soft tissues. Situated within early twentieth-century medical scholarship, the work reflects evolving operative techniques, anatomical precision, and clinical reasoning. The structure is presumably systematic, combining theoretical exposition with case-based analysis to guide surgical decision-making. The volume contributes to the historical development of orthopaedics, documenting practices and methodologies that informed modern surgical standards.