Kyphosis most cases of kyphosis are mild and only require routine monitoring, serious cases can be debilitating. High degrees of kyphosis can cause severe pain and discomfort, breathing and digestion difficulties, cardiovascular irregularities, neurological compromise and, in the more severe cases, significantly shortened life spans. These types of high-end curves typically do not respond well to conservative treatment and almost always warrant spinal fusion surgery, which can restore the body's natural degree of curvature. Prevalence of kyphosis has been linked to nasal obstruction in a study. The risk of serious complications from spinal fusion surgery for kyphosis is estimated to be
The Part Played by Labour in the Transition from Ape to Man a dialectical relationship with the human body. Specifically, Engels emphasizes the importance of humans’ opposable thumbs and phonetically dynamic mouths, which enabled them to articulate complex forms of language over time. In that respect, the essay challenged the prevailing philosophy of Cartesian dualism, which drew a stark division between mind and body. Marx and Engels had both alluded to this notion in previous writings, for instance in their first collaborative work, "The Holy Family", in which they wrote, “Body, being, substance are but different terms for the same reality. It is impossible to separate thought from matter that thinks.” However,