Prevention and management of prosthetic joint infections emerged as core research questions, linking environmental controls with antimicrobial strategies to curb deep infections after arthroplasty. Ultraclean operating room air and antibiotic-impregnated cement were central preventive measures, complemented by contamination-risk mitigation during surgery. For established infections, staged or staged-like exchange strategies dominated salvage efforts, with emphasis on long-term infection control and functional outcomes, while hematogenous and late infections highlighted delayed presentations requiring intervention and informing pathogenesis. Historical Significance: The period produced influential breakthroughs that shaped future directions, including the recognition of biofilm formation on implants as a driver of persistent prosthetic joint infections, guiding biomaterial and anti-biofilm research. Seminal work on ultraclean air conditions provided controlled evidence for reducing deep infections after hip and knee arthroplasty, influencing operating room design and infection-control protocols. Foundational studies on risk factors and management established thresholds for prevention and treatment, including the role of exchange arthroplasty in deep infections and the development of standardized perioperative infection prevention guidelines.