I’ve been favouring my left thumb all week. Applying pressure to it causes a dull pain in the first joint from the hand. I thought I’d pulled a muscle somehow, but tonight the bone in that joint feels tender and mushy.
I couldn’t tell you what I did to it, but I’ll hazard a guess: it happened in the middle of the night. I usually sleep on my back, but sometimes I’ll roll over onto my stomach in the middle of the night, tucking my arms under the pillow. This always results in at least one of my arms falling asleep. It’s a rather unnerving experience and it doesn’t get less so. An asleep arm is essentially a dead arm and I have very little control of it, if any. On the nights when I wake up and become aware of this asleep arm I have to move very slowly and deliberately roll around in a way that will force my arm to flop over with the rest of my body. I worry that one day I will roll over unaware of my sleeping arm and actually roll right onto it, so that it’s laying flat across and underneath my back, torn from its socket at my shoulder.
I think my tender thumb might be a foretaste of just such a thing.