We all have fighter's fists.

You might not consider yourself a fighter. More a lover perhaps? Well according to researchers at the University of Utah we may have fists which have evolved for fighting as well as loving.

"They found that the structure of the fist provides support that increases the ability of the knuckles to transmit "punching" force."

Not being a scientist myself I can hardly refute these findings but I must admit it seems a weird way of going about research. Is the University of Utah in need of some self-promotion? It seems to me from reading the article that they measured the force of a fist strike and a palm strike and conculded that the ….

"force per area is higher in a fist strike and that is what causes localised tissue damage [in the opponent]"

I could have told them that. In this article it states that the force delivered by the open palm and the punch were equal (or at least not greatly different), but that the buttressing of the fist and the boney knuckle protrusions caused the damage.

Surely this is a side-effect of having a fist which can manipulate tools. A serendipitous (well, not for the punched receiver) effect.

Can we deduce that elbows evolved for striking because they're hard and boney?