Hello.
The jerk in the right knee just suggests that the right knee joint is hyper-reflexive. The causes may be different. ( If both the joints have increased reflexes, some nerve problem in the spine may be considered. The thumb shaking seems to be unrelated. It will help if you get your neuro examination done regularly.
Regards
Hello.
How is your mom now? Was she hurt in the accident ?
Some amount of calcium deposition in brain is common as the age increases. Otherwise, some inflammation of the blood vessels also leads to calcium deposition on the artery walls.
What is more important is to know if your mother had any symptoms earlier.
Regards
Glad to be of help.
Let me know if any further information is needed.
Regards