look at the skull where is zygomatic bone and where maxilla
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overlooked fracture must be cut often including maxilla, because the weakest point of the malar bone (zygoma + maxilla) is the maxillary bone -line fracture cross the infraorbital canal (nerve) and zygomatic arch + orbital rim + orbital floor + lateral wall of the orbit
zygomatic bone (complex) reposition can be done near the commissure + the rest like in the fracture
generally you can try to get some fight you will get clean cut if you break malar bone
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and from that point ask surgeon for a new position... but it's no so easy
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breaking malar bone even wont give you so much swelling as surgery
but you risking complication with the eye if the displacemenet will be too big
I have to add you that during fracture, UNCONTROLLED fracture I lost only 20% of nerve function, but during surgery 100%
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fracture crossed the nerve
I give this funny example to anyone who can avoid surgery..... if you can than avoid... really fractures has less complications often than big surgery