A martial artist and contortionist takes on the impossible poses of comic book heroines: if a martial artist who is also a contortionist can’t mimic a pose you use constantly for female fighters, there might be a problem in, you know, your choices on basic anatomy. I can’t be the only one who thinks this.

She's not.  I've always found it hilarious that the physiological depictions of Psyloche are the least believable thing about her.  I could buy into the notion of a formerly blind, British telepath mystically forced into body of an Asian assassin.  That type of crazy falls under the general "comics everybody!" rubric.  But unless a super stretchy spine is a mutant power, it's hard to forgive the excessive use of poses like this: