Camera options for monitoring my dog?

My dog had ACL surgery yesterday, and is currently in the recovering process. She had ACL surgery in January as well, and tore it a second time, so this time around I want to make sure that the same doesn't happen. I'm confining her to my workout room, but I would really like to install some sort of camera that way I can watch her when I'm upstairs, away from the house.etc Are there any good (and cheap) options that I can use for this? Something I can just hook up temporarily and monitor her on my laptop or iphone? Any input is appreciated

Added (1). My dog isn't crate trained. She was in a crate as a pup, but she hasn't been in one for at least 5 years. The vet said it would cause too much stress for her to put her in a crate. So instead, we confined her to the room she likes best.

I'm surprised your veterinarian did not confine your dog to a crate.

A wire crate will restrict your dogs movement until they have a chance to heal

Simply you can use web camera or cc camera for the purpose of monitoring of you dog. You need the power supply for every time to operate you pc so it would be better to have a generator in your home then your pc won't stop to operate then your dog will be welly monitored. To properly active your camera it should be new clean, always check if the camera is connected properly or not before going outside from the home then better monitoring will be performed.