Edema in leg

Question
Hi there
I have an Aldabra Tortoise that I have had for almost 7 years.  I notice its front right leg appears swollen and it can't move on it.  There is no sign of any open wounds or injury on the leg.  The appetite appears good and it's grazing and eating the food it give it.  There is no signs of any other problems such as a respiratory disease.  I haven't had any other problems with the tortoise.

Answer
I am not a vet, and I am not comfortable guessing on medical issues like this. If you cannot take it to a vet for whatever reason, try a forum like http://www.tortoiseforums.org or http://www,shelledwarriors.co.uk where you might find keepers experienced in the medical management of the giants might be able to help.