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I will paste into this a webpage on the anatomy of the carpal tunnel. My suspicion is that this is not a bone fracture, but a problem of the ligaments and you are having the symptoms of carpal tunnel syndrome, a condition that occurs when the soft tissues/ligaments of the wrist are out of alignment.
It usually starts with the transverse carpal ligament on top that swells slightly and increases the pressure inside the tunnel
the chiropracter, by massaging the ligaments, is able to get them to release, and open the distances in the tunnel, with less pain.
I would ask you to check just where that spot is that causes pain. There is a test in neurology called the TINELs sign, you tap on the wrist with the sharp edge of the neurology percussion hammer, at a spot between the two large flexor tendons in the wrist (palmaris longus, flexor indices)
the test to evaluate this problem is the EMG test, that puts a small electrical impulse through the nerve and measures the speed of conduction, which is slowed if the nerve is pinched at that spot.
I hope I was able to answer your question. please rate my success as that is how I am compensated for my work. come back to ask questions if you have them. Dr Frank T.
What you are describing there are the outlines of your anatomic "snuff box" and the bone you are feeling is actually a prominence off the radial bone called the radial styloid process, I believe. I will add some additional information. You might have a problem called dequervains tenosynovitis, which is an inflammation of a tendon at the base of your thumb. Dr Frank T.
Hi. There is a tendency for you to acquire these problems bilaterally so you have to watch for symptoms to appear. this is a type of osteoarthritis so watch your finger joints. If you do repetitive motor movements with your hands, (do you play an instrument, or work on cars,??) then you have to find better methods. The splint you need is for your thumb, it is called a spica splint. Here they are at walmart
you should get one and wear it before your doctors appt. good luck