Aryx Trevarian, a character in Synthesis:Weave and Synthesis:Weave 2, Afterglow by Rexx Deane, is a through-knee double amputee.
From the author:
A tsunami on a space station.
An explosion with no trace of the bomber.
Cyber-security expert Sebastian knows evidence doesn’t magically disappear, yet when he and his colleague Aryx, a disabled ex-marine, travel the galaxy to find the cause, there seems to be no other explanation.
Can they unravel the mystery before his family, home, and an entire race succumbs to an ancient foe?
Self-published (first published January 2015, but was rewritten and rereleased in August 2018)