The length of this time cannot be determined, and it needs to be determined according to the blood supply of the limbs.

Generally, if it is too tight, the local blood circulation will be very poor, and the degree of necrosis can be reached in about 5 minutes.

Muscle necrosis refers to the situation that muscle is over-squeezed by external force or affected by other factors and loses its ability to absorb nutrients, which leads to muscle infection, decay and eventually necrosis.