The palm and the palmar part of
the wrist are painful when the pal-
maris longus is overloaded. The
pain is described as “thousands of
tiny needles” and it makes it difficult
to work with tools.
Shortening of the pronator teres
occurs from working on a computer
while positioning the mouse in front
of the body, rather than on the side.
This position is characterised by in-
ternal rotation of the arm and flex-
ion and pronation of the forearm.
The shortened pronator teres limits
the extent of flexion of the forearm
and makes the extensors of the
forearm disproportionally long.
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