Dumbledore's dead hand

[wickywackywoo2001]

No: HPFGUIDX 134626

I'm curious, how functional was Dumbledore's dead/injured hand?  We
know it didn't get better throughout the year, in fact, it seemed to
be deteriorating, and it seemed to cause him pain.  What was he able
to do with it?  Could he hold a wand?  Could he write?  I'm wondering
if he actually wrote those notes to Harry, or if he had to use a Rita
Skeeter-like writing pen.

Wanda