I'm Doug, and I'm very sorry to hear of your situation. My goal is to provide you with excellent service today.
I'm afraid that social security has no programs that provide extra money or benefits based on you having suffered an injury that requires you to now use a wheelchair.
If your disability is such that you require assistance to allow you to get through your everyday life at home, and you are a US military veteran, there may be a program that would pay you money each month to help pay for the assistance you need at home.
Any War-Time Veteran with 90 days of active duty, and at least 1 day beginning or ending during a period of War, is eligible to apply for the Aid & Attendance Improved Pension.
Under this program, the VA will pay the benefit for any Vet if they otherwise qualify. To qualify medically, a War-Time Veteran or surviving spouse must need the assistance of another person to perform daily tasks, such as eating, dressing, undressing, taking care of the needs of nature, and they may not have assets exceeding $80,000 not including their home and an automobile.
Here is a link which explains how to apply:
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I wish you and yours the best in 2016,