Test #2 - Laparotomy -vs- ORIF of radius

Explain why a surgeon would use a "subq" suture for an abdominal case but not for an ORIF of a fractured radius.

Here are my very random notes that actually don't seem chronological or complete:

*ORIF (open reduction internal fixation) means resetting a broken bone.
*sedate patient, pull into place (refers to simple procedure?)
*incision, expose bone, hold with clamps, hardware, replace periosteum (more complex?)
*subcutaneous layer thinner in antebrachial region than in abdominal area (fat distribution)
*adipose tissue of subcutaneous layer doesn't hold sutures very well
*would muscles of the antebrachium serve as a natural splint in this scenario?
(does that even matter?)