Dr. Harms frequently uses live ultrasound or x-ray imaging to perform certain deeper joint injections. In this short video you'll see an ultrasound video of a hip joint injection on a horse with severe arthritis of this joint. There is a dark circle near the lower left of the screen which is the joint fluid pouch. You'll see swirling in this fluid as the medication is injected into it. The needle is visible as a faint white line extending from the upper left. Watch it several times until you see it!
In the comments there is also a picture of an x-ray guided navicular bursa injection.
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