Human Leg Anatomy Illustration - Knee Flexion and Muscle Structure #160139 (License: Personal Use)

This vintage-style line drawing depicts a human leg bent at the knee, with careful hatching to illustrate muscle groups including the quadriceps, hamstrings, and calf muscles. The illustration emphasizes anatomical accuracy in tendon placement and joint alignment, typical of 19th- or early 20th-century medical textbooks. It serves as a foundational visual aid for understanding lower limb biomechanics.

Used in medical education, anatomy websites, physical therapy resources, and historical medical illustration archives; targets students, clinicians, and educators seeking clear, unlabeled anatomical reference for knee flexion mechanics.