What means skeletons outside the body?

Skeletons outside the body can be a reference to:

- Osteoporosis, which is a bone disease that causes bones to become weak and brittle in which osteoporosis is a skeletal disorder that occurs when bones lose minerals such as calcium and phosphate, leading to porous and brittle bones.

- Rigor Mortis, which is the stiffening of the body after death, caused by the natural process of muscles locking into position.