why do you think that orbital fractures are so hard to fixate?

Answer 1

This is a medical / surgical question .How come it is in botany section?

Please click the link below to realise how deliacate the orbit and associated parts are . only then you will realise why any fracture in that area is difficult to mend.

http://en.wikipedia.org/wiki/Orbit_%28anatomy%29

Answer 2

orbital bones are very thin as far as bones go. Also there are many fissures in that area. The combination of the two makes it very hard to reinforce. ie. pins, screws, or plates