Re: Back nerve pain 3 days post-op?
Welcome to the board.
It is very common to have all sorts of different types of pain, and in a variety of locations for weeks, if not months post fusion surgery.
Do not let this deter him from taking his walks. Walking is the most important thing he can do post surgery. It is the best exercise for stretching out the spinal nerves after surgery. Most importantly, it helps to keep scar tissue from attaching to nerves as it is forming and filling in as the body heals. It is better to take many small walks rather than one longer walk, even just around living quarters. If it hurts, shorten the length of the step, but try to walk with a "normal" gait. Do not give into favoring one side or the other.
Use ice for pain. You can ice 15-20 minutes per hour, round the clock if necessary...just be careful that the skin is protected, and lay the ice or gel pack across the lower back.
I'm not sure what your boyfriend was told by his surgeon but healing is a long, slow process and he should be prepared for many steps forward and backward, too. Progress with healing usually does not flow on a straight-forward march toward the finish line. There are pot holes along the way, so tell him not to be discouraged if just when he thinks things are better, he develops a new pain or ache or feeling of stiffness, etc.
Also, it will take up to a year for the bone to set up to the point that it is dependably strong and durable even though signs of fusion may be seen as early as a couple weeks post surgery. Most patients feel pretty much back to normal at six months, but here too there is a wide range among people.