Penny, I'm sorry this happened to your son. A week isn't very long in terms of his injury for doctors to make their assessment about his recovery of function. It takes a lot of time for the swelling to go down around the area of injury, for the nerves and body to calm down from the trauma of the injury and stop reacting in an inflammatory way. All that means that he could be experiencing changes in functions for the next couple of years, and with the more aggressive therapy that's used now in rehab he could have small improvements for several years. That being said, each spinal injury is different, and there's really no way to tell for sure. Some people have lots of functional return, and some have little change. You'll learn a lot by reading stuff on these forums, and while he's in rehab talking to other people.
Massage and lymphatic drainage can help a lot, but talk to rehab doctors about how aggressively to approach this at the beginning. I suspect the idea of stretching is the best since paralysis causes muscle spasms which draw the limbs inward. My mom has a massage therapist and finds it really helpful with her continuing treatment (she's a C3-5 incomplete quad with no functional movement from the shoulders down, injured in a fall in 2002). It's cool that you'll be able to do massage therapy for him without the extra cost.
The best info you can get is on this CRPF website and the Miami Project for a Cure. There are lots of other places with info, but these two are the most reliable and have good information support. This is the weekend so know that more people will reply to you starting tomorrow. You should contact the CRPF Info. Specialists who can answer lots of your questions, and get the online or print version of their Paralysis Guide which is packed with useful information and is free. You may want to set up a CaringBridge site which helps your family keep his friends and family updated with his progress by just one post, and lets them send him messages of support. If you do, or just for some encouragement, check out the story of Jack Jablonski, a young man who was injured in December of 2011 in a high school hockey game with a C2-3 complete fracture. I think his recovery will encourage you and your son.
There are many great rehab places in your area, push for the best and most aggressive rehab your/his insurance will pay for and make him stay as long as possible, at leas three months if they will. Know that for Medicare purposes, the guidelines changed in February 2013 so the person no longer has to show progress to be kept in the rehab program, they can stay if they are maintaining or staying stable at their level of function. As far as equipment accept anything they offer, especially before Dec. 31, 2013. Ask them now what he will need and if they will please prescribe it ASAP so it's delivered and billed before the last day of this year, because next year not only will co-pays go up, but he will have to pay sales tax on the full price of each piece of equipment that he purchases, even when insurance pays for it leaving him with only a co-pay.
I hope this gets you started. Again, I'm sorry the accident happened, but know that next year at this time things will be better for all of you. Really they will. Deborah