Hi there,
Welcome to the forums,
I am sorry to hear you are dealing with all of these health challenges along with limited mobility. This can be challenging because Huskies are so high-energy dogs.
I really hope you have a family member that can walk him because these dogs were built to walk and run and can get very frustrated if their exercise needs aren't met. At 1 year old, your Husky is also nearing the adolescent stage which is when they have boundless energy.
https://www.braintraining4dogs.com/members/archive/survive-dogs-adolescent-stage/
If you don't have a family member to help out, having a neighbor, friend or dog walker who can walk him is important. Another option is doggy daycare.
With their exercise needs met, then these dogs are easier to manage and that is when we can work on providing them with the mental stimulation and training they crave.
So you have lots of brain games to choose from if you go to this page: https://www.braintraining4dogs.com/members/brain-training/
Clicker training tricks can also be a good way to keep that brain busy: https://www.braintraining4dogs.com/members/video-archive/
Nosework and scent games can be fun yet somewhat tiring activities.
One game I love a lot and that can help drain some energy is the "kibble-toss game." It can be done by sitting or standing and consists of keeping a portion of the dog's daily ration of kibble in a pocket or treat bag and tossing the kibble at a distance repeatedly. The dog should therefore be repeatedly yo-yoing back and forth between you and the tossed kibble.
To make the game even more "productive" insert some behavior before the treat is tossed. For example, you can ask your dog to sit in front of you before tossing the treat, or hand target or lie down or any other trick. You can mix and match behaviors so he never gets bored.
Automatic treat dispensers, food puzzles, automatic bubble machines, automatic ball launchers can also provide some exercise remotely, but you still want to be involved in some activities so as to help strengthen the bond between you and your dog.
Remember to prioritize your health and well being while caring with your dog. Its OK to ask for help and take it easy and adjust your routine as needed.
I hope this helps!