Hi sir,
uric acid and RA factor have nothing to do with tingling and pain from knee to foot. Tingling or paraesthesia can be due to peripheral neuropathy (
diabetes?), Or due to nerve compression at the level of vertebrae, or due to
vitamin deficiencies.
You can consult me for further information
Next Steps
Get a fasting blood glucose level,
Get a spine X-ray if available
Health Tips
Avoid bending forward and lifting weights, proper posture during day to day activities.