The psoas is a deep-seated core muscle connecting the lumbar vertebrae to the femur. The psoas major is the biggest and strongest player in a group of muscles called the hip flexors: together they contract to pull the thigh and the torso toward each other.
7 photos: Photos: Tallest man meets shortest man. Chandra, meet Sultan â Chandra Bahadur Dangi, at 21Â½ inches the shortest adult ever verified by Guinness World Records, poses Thursday in London with the world's tallest man, Sultan Kosen, who stands 8 feet 3 inches tall.
Sultan Kosen, the world's tallest man, and Chandra Dangi, the world's shortest man, attend the Guinness World Records Day at St. Thomas' Hospital on Nov. 13 in London, England. Fred Duval, FilmMagic. Fullscreen. Sultan Kosen is 8 feet 9 inches tall, and Chandra Dangi measures 21-and-a-half inches.