Not quite, but I know a bit about it. The parathyroid is attached to the thyroid, and as you probably know, regulates the storage of calcium in the body. When I had my cancerous thyroid removed they kept the parathyroid and had to "plant" it in the adjoining tissue, and then I had to supplement calcium for a couple of weeks until the parathyroid adjusted to its new location and started doing its job again.
I imagine that having the parathyroid removed would be a similar procedure to a thyroidectomy, and after the operation you would merely need to supplement calcium on a daily basis, just as I am taking thyroid hormone daily for the rest of my life.
In terms of the op itself, it involves a general anaesthetic and an incision at the base of the neck (you can only see my 5cm scar if I point it out - my surgeon did a great job). The surgery itself is reasonably complex given they need to get behind your carotid artery, vocal chords and larynx - I think my surgery took 3 hours. The good news is that you'll be out of hospital within 24 hours and after a few days rest will be as good as new.
Risks as described to me were minimal - a small percentage of patients experience a change in their voice due to damage to the vocal chords, but that's the only risk apart from the usual risks of general anaesthetic and major surgery.
Hope this helps! Geoff (Redvee) has also had a thyroidectomy and can weigh in if I've missed any important details.