The rhombus of Michaelis, also known as the Michaelis-Raute or the quadrilateral of Michaelis, is a rhombus-shaped contour (also referred to as kite-shaped or diamond-shaped) that is sometimes visible on the lower human back. The rhombus is defined by the following vertices: dimples of Venus, the top of the gluteal crease (S5 vertebral body level), and the lower end of the posterior median furrow (spinous process of the 5th lumbar vertebra).
The Rhombus of Michaelis is named after Gustav Adolf Michaelis, a 19th-century German obstetrician.
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External links . Accessed 2012-11-10. Biography of Gustav Adolf Michaelis