Scoliosis are "captured", meaning that they are held fast between the ilium bones of the pelvis. Compared to humans, Old World monkeys have far larger erector spinae muscles, which are the muscles which hold the spine steady. These factors make the lumbar spine of most primates less flexible and far less likely to deviate than those of humans. While this may explicitly relate only to lumbar scolioses, it is possible that small imbalances in the lumbar spine could precipitate thoracic problems as well. Scoliosis may be a byproduct of strong selection for bipedalism. For a bipedal stance, a highly mobile, elongated
Body privilege idea that privilege could also be based on a person's body size. Samantha Kwan coined the term "body privilege" and explains how it affects some people's everyday life. For example, in some cases a person's body is seen as an indicator of a person's intelligence. A person's body can also be a deciding factor on employment decisions such as hiring and promoting. Body privilege Body privilege is a concept used to examine the economic, social, and political advantages or benefits that are made to both men and women solely based on their physical appearance. A common example of the "ideal"