I have been told that my hand remains in the sammin the same position it was in at the time of the stroke is tht true because my hand remains extremel?

Get hand therapy. Consider botox, especially in spasticity in your arm. A good hand therapist or occupational therapist can do wonders. With your age, stroke is unusual, and high cholesterol may affect heart but not brain directly, as usually high triglycerides more in stroke. Have you been checked for high homocysteine or a cardiac pfo?