Hello.
There may not be a causal association between the two symptoms. But when one part of your body is in pain, it makes you more alert/attentive to any other pain.
Why was the oral implant put in? Was there any foot pain/stiffness before you had the implant installed?
Regards
Hi, probably this is peripheral neuropathy affecting nerves. How old are you? Any history of diabetes? Deficiency of vitamin B in the body is also related with peripheral neuropathy giving symptoms of pain and stiffness in legs.
Please get your vitamin B levels done and try some vitamin B tablets or shots. There are other causes for neuropathy, to read about it do visit website
http://en.wikipedia.org/wiki/Peripheral_neuropathy