Nearly hard lump located at the distal radius that almost extends to the medial aspect of the ulna. not painful and not very moveable. ideas?

Wrist joint lump?: If near or at your wrist it is likely a synovial cyst or "ganglion." It is a piece of joint lining that is growing & making joint fluid that forms in a hard lump from a joint where it starts. Unfortunately, the only Rx that may be permanent is surgical with careful attention to removing the stalk between the cyst and the joint. Hitting it can break the cyst but it only reforms larger.

Lumps: see ortho: cheryl lumps and bumps are common in extremities.they may be painful or painless. they tend to occur after an injury. this could be a ganglion cyst. it could be a tendinitis. how long has it been present is helpful to know. i would recommend an orthopedic surgeon see this to determine the exact nature of the lump.