My doctor asked me to pray.

[Godscreated]

Prayer prayed as a demand will not be answered, you can't sway God through demands. Prayer is a request in some situations, prayer is having a conversation with God, as you would with a friend. Prayer is thanking God for the things He's blessed you with, prayer is recognizing God is righteous and perfect, worthy of worship. Prayer is recognizing God's will is going to take priority over our asking because He is omniscient. I ask for certain things daily and believe God will answer yes, I thank Him daily and I usually have a short conversation with Him, I've asked God for many things and have received nos and yeses. Prayer is part of having a relationship with God to help in one's growth and to be available for working within God's will for others, His plans are always best.
Now for the amputee, a Christian would give thanks to God for saving his/her life and be ready to see what God's plan is for them. Will they be sad they lost a limb/s, yes, I know I would, but I also know God will still have a plan for my life and help me in His plan, giving me also the peace and comfort I would need to go forward. For those who would ask God to restore an amputated limb/s they actually know very little about God. If God restored a limb then where would faith be in Christianity and more importantly in God's plan, everyone would know that the limb didn't grow back by itself, because one hasn't. I'm not saying people shouldn't ask God to restore a limb, what I'm saying people should understand how to pray within God's will, they will be much happier in their future life.
Don't know if this is what you were looking for, it is however it's what I see as the correct way to pray.

GC

So, it's against "god's plan" to restore amputated limbs?

After all I said and this is what you have, I honestly thought you might have something more and yes it may be part of God's plan not to restore amputated limbs, if you want to know why you'll have to ask Him. God wants us to trust in Him for our better life with Him, whether we have all our limbs or not. I've heard of obscure stories about limbs being restored, I haven't investigated them because for me that's not important to my faith, belief and knowledge of God, God's given me what I need just as He promised He would for everyone who desires a loving relationship with Him.

GC