The book "Osteoarthritis of the Knee" provides a comprehensive summary of current concepts in the surgical treatment of knee osteoarthritis. It covers various procedures such as high tibial or femoral osteotomy, unilateral knee arthroplasty, and total knee arthroplasty. The structure of the book allows for reading at different levels of knowledge, with foundational chapters designed for non-specialized or early-career surgeons, rheumatologists, radiologists, and physiotherapists. Advanced topics that address challenging cases and controversial aspects are aimed at highly specialized surgeons. Numerous chapters focus on complex cases of primary total knee arthroplasty, including the treatment of stiff knees, severe deformities, and revisions after failed procedures. The book's didactic approach, supported by numerous illustrations, X-rays, and algorithms, facilitates understanding and provides quick answers to technical and conceptual challenges.