Conversation: The conversation between human and AI assistant.
[|Human|] I have a hard knot on the lower part of my arm near the elbow. Mild bruising. Pain with use and sometimes numbness that travels down my fingers. I fell hard on my arm in the parking garage a week ago. Twisting the elbow causes more discomfort than bending it.
[|AI|]  Hi. This can be due to a hematoma formation due to injury. The hardness tell the pressure or a stage of organization of the hematoma. Its pressure on the nerves will cause the symptoms you have. I would advise such a patient to undergo X-ray to rule out hairline fracture. May be put in a large bore needle to aspirate the blood to reduce the volume and compression effect (under ultrasonography guidance is available.) You may please visit an Orthopedic surgeon for a proper diagnosis and further management.