Book excerpt: Approximation in surgery is the bringing of tissue edges into the desired position for suturing. This atlas is a step by step guide to tissue approximation, suturing and knotting, for trainees in surgery. Divided into seven sections, the books begins with discussion on the history of suturing, instruments, and suture materials and needles. The following chapters cover practical aspects of different types of suture, their advantages and disadvantages; and surgical knot tying. The book concludes with chapters on skin and soft tissue suturing, and laparoscopic suturing; essential knowledge with the preference for minimally invasive techniques in modern surgical procedures. The atlas is highly illustrated with surgical photographs and diagrams, and is supported by videos of suturing techniques. Key points Step by step guide to tissue approximation, suturing and knotting for surgical trainees Covers techniques, advantages and disadvantages of different types of suture including laparoscopic Highly illustrated with surgical photographs and diagrams Includes access to videos demonstrating surgical techniques