This specialist bibliographic volume, Bibliografia ortopedica Vol. IV, Fasc. 2 (1970), continues the systematic indexing of orthopaedic medical literature curated by Aulo Gaggi Editore. The fascicle gathers references to journal articles, congress papers, and monographs across diverse areas of orthopaedics, traumatology, and rehabilitation, including both Italian and international sources. The structure follows clinical and anatomical themes, offering a research tool for orthopaedic surgeons, academics, and medical librarians in the pre-digital era. It forms part of a broader series that sought to centralize access to ongoing developments in musculoskeletal medicine.