What could be the cause of the pisiform bone being swollen. It s about twice the size of the other side. It don t hurt, nor does it inhibit any movement. I did lose strength in that arm this morning when doing triceps exercises with 20 lb weights in both hands.
Dear Sir, thanks for question. I have understood your concern, see swelling indicates injury or inflammation at site affected, as you mentioned pain in perform bone may due to acute immediately compression to underlying tissue. As you mentioned that you were doing triceps curls so might be there was higher compression injury around bone, might ligaments and tendons may injury temporary. So first you need to consult orthopedic surgeon and get x-ray done to rule out any fracture in the bone.  If there is no fracture then need to take physical therapy in the form of ultrasound and tens modalities which inhibit pain and swelling. I hope you have satisfied with the answer. Feel free to ask again. Provide feedback.