They might become difficult to navigate, and the amount of accidents at that location will be increased.
A sharp bend is also known as a "Dogleg"
A "sharp double bend" can refer to a Chicane. According to the Oxford Dictionary, a Chicane is "a sharp double bend created to form an obstacle on a motor-racing track or a road".
Chicane
DOGLEG Hairpin bend.
in the center
this is usually called the "S" bend on a race track
sharp angle
It is a physical change.
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They bend only slightly. That happens when you are kicking.
at the elbow. "Flexion of the arm" just means to bend it.
It depends on which way you might bend it. If you find that it hurt when you make a fist, you may have nerve problem, muscle problem or joint problem. Only a doctor who takes a look at it can tell you.