How can I get my son to hold my hand?

Anytime I try holding my 16 month olds hand, he drops to the ground and screams because he just wants to run. I eventually would just pick him up to avoid the meltdown. I recently hurt my back and can no longer pick him up or get him off the ground when he throws these fits. Obviously in parking lots, and out in public, I need him to understand that we hold hands for safety. Any way to get a child this young to be fine holding hands when necessary?