Purpose: To provide an overview of the normal anatomy of the knee using high-resolution ultrasonography. Materials and methods: Normal ultrasound images were obtained from a healthy subject, and corresponding images of human anatomy and histology were acquired from body donors. Results: Several high-resolution ultrasound, anatomical, and histological images were created to illustrate and comprehensively describe the basic standard scans in compliance with international standards. This atlas summarizes a selection of typical normal findings. Conclusions: This overview explains the normal anatomy of the knee as seen by ultrasonography. High-resolution knee musculoskeletal ultrasonography aims to provide an accurate structural evaluation, which requires comprehensive knowledge of sonoanatomy. When used appropriately, contemporary high-resolution musculoskeletal ultrasonography enhances knee imaging by connecting anatomical cross-sections and intricate histology to specific anatomical features.