Lump on lower leg

I have a hard lump near the bone on my lower leg about half way between the knee and ankle.  I discovered it putting on socks.  It does not hurt and can be moved around under the skin.  It is very hard, like bone.  I researched bone spurs, but did not find any reference to spurs on that part of the body.  Also, it does not seem to be attached to the bone.  I am 58 years old and borderline for osteoporosis, but do not have it as yet.  Is this a symptom of that?  Do I need to see a doctor about this, since it is not painful?  Please advise. Thank you.

[shannonwooten]

I could be completly wrong but... it could be a blood clot.

My husband had a lump on his leg... turned out to be a clot.

Good luck.