ok, for anyone interested here are the actual results from my records.
deep posterior compartment, left leg. The test involves inserting a small device into the muscle of the calf and its then taped in place. The device is connected to a machine via a tube full of saline. Its not dreadful but its not fun either. About half way through when the pressure drops that is because i started limping running mainly on my other leg.
I remember with one of the studies, perhaps on my other leg, that when the pressure got really
high it actually pushed the device out of my leg despite the taping and fell on the floor. Immediately after this blood starting squirting out of my leg along with my heartbeat. If you have ever seen a gory film where someone lops someones head of arm off or whatever, and you get hte skirting blood from the stump - that actually is exactly what it is like.
By the way, i would not reccomend the surgery it is pretty awful, even when healthy!