I suspect this pain plays some part in difficulty regaining my touch typing skills.
UPDATE: A reader mentioned that there is research showing a connection between vitamin K deficiency and osteoarthritis. This study:
The PRs for OA, osteophytes, and JSN and adjusted mean number of joints with all 3 features in the hand decreased significantly with increasing plasma phylloquinone levels (P ≤ 0.03 for all). For example, as plasma phylloquinone levels rose, the PR for hand OA decreased from 1.0 to 0.7 (P = 0.005). For the knee, only the PR for osteophytes and the adjusted mean number of knee joints with osteophytes decreased significantly with increasing plasma phylloquinone levels (PR decreased from 1.0 to 0.6, P = 0.01).and:
Results: This ancillary study had 378 participants (193 in vitamin K arm, 185 in placebo arm). There were no effects of randomisation to vitamin K for radiographic osteoarthritis outcomes. Those with insufficient vitamin K at baseline who attained sufficient concentrations at follow-up had trends towards 47% less joint space narrowing (p = 0.02).and many others. One problem is that vitamin K increases blood clotting, and I am on warfarin to reduce clotting as a stroke preventative. I need to talk to the anti-coagulation clinic before I increase consumption of green leafy vegetables (which I hate, so the arthritis is no surprise).