In reply to lorentz: I have had compartment syndrone in my legs when I was doing a lot of running. It was bad. My legs hurt even when walking. I stopped running for 6 weeks and waited for the muscles to get smaller. This worked provided I didn't do a lot of running.
I also know a climber who had it in his forearms. He had several operations to open up the compartments to allow room for his muscles.
There have been several famous runners that also had the syndrome in their legs such as Steve Cram.
Apart from an operation it can be treated by steroidal drugs. I have never heard of anyone having compartment syndrome in their elbow and am mystified as to how you could even get it there? The condition is due to muscles outgrowing the compartments they are in.
I am curious as to why you are asking about compartment syndrom which is very different to tennis elbow which is very common and very treatable.
http://www.ncbi.nlm.nih.gov/pubmedhealth/PMH0002204/