The sacral curve opposes the direction of the lumbar curve, going backward. The L5-S1 junction is particularly vulnerable to misalignment, wear and tear, and injury. This is because, in most people, ...

A team of archaeologists and paleontologists from Argentina, the U.S. and China has unearthed the first known example of a fossilized Alvarezsauridae skeleton with evidence of air pockets in its ...

What is patent foramen ovale transcatheter repair? A patent foramen ovale (PFO) is a small hole between the 2 upper chambers of the heart, the right and the left atrium. Patent foramen transcatheter ...

Background: The next-generation closure device for interventional treatment of patent foramen ovale (PFO) is regarded as biodegradable, yet the corresponding biomaterial technique is still challenging ...