13 aged son,when it full recover from radius hairline fracture because sometimes he feel faint pain,cast off from nearly 2 month? cast was for 4 week.

Muscle adjustment: Having a cast on an extremity for a length of time causes the loss of muscle tone and size which take a good while to return to normal as each muscle rebuilds to the same strength as it was before. Sometimes the site may be uncomfortable due to a growth spurt, if that is going on at this time. If the pain persist or worsens go back to your doctor and have it checked.