Maybe late 80’s.
A man is seriously injured, and the doctors rebuild him with advanced prosthetics (a la the Six Million Dollar Man), including the ability to interface with remote manipulators. The character quickly gets power-drunk with his abilities, and tries to force the doctors to make him 100% bionic, other than his brain. It does not end well for the protagonist.
Or the doctors, who don’t learn from this lesson.
Sound like Joe Haldeman’s “More Then the Sum of His Parts.” Sometimes referred to as “Tom Swift and his Electric Penis.” 
What’s the late 1980’s - 1986 to 1989? Here’s a webpage from the Internet Speculative Fiction Database with links to all the science fiction short stories that have ever appeared in Playboy:
http://www.isfdb.org/cgi-bin/pe.cgi?24780
From 1986 to 1989, only 21 science fiction short stories (if I’ve counted right) appeared in Playboy. Do any of the titles look right?
Yes, this is it.
Thanks!
It’s one of the few times an academic came up with an interpretation of a work that the author had never considered, but which he had to agree: the story was really about Haldeman’s experience and feelings after he was badly wounded in Vietnam.
I knew this sounded familiar! If you have Dealing In Futures (one of Mr. Haldeman’s short story collections), this story begins on page 202. The genesis was an assignment he gave to his science fiction writing students at MIT. They each picked a random number that corresponded to a page in The Science in Science Fiction. They then had to combine the subject discussed on the page they’d selected with the first page of a story from the Science Fiction Hall of Fame.
Haldeman made himself do all the assignments he had given the students; “More Than the Sum of His Parts” was his pastiche combining “cyborg” (the subject from the first book) with the first page of Daniel Keyes’s Flowers For Algernon.
Although he doesn’t mention this story being published in Playboy, it wouldn’t surprise me. “Blood Sisters”, his “first Playboy story”, appeared in the July 1979 issue, and is also collected in Futures as well.
Here’s a list of all the places where “More Than the Sum of His Parts” has appeared: