Study Of Posterior Interosseous Artery (PIA) Flap For Reconstruction Of The Defects Of Wrist And Hand Over A Period Of 2 Years In Atertiary Care Centre

Abstract

The posterior interosseous artery (PIA) flap is one of the options for hand and upper extremity reconstruction. It does not sacrifice the
main arteries of the hand, the radial and ulnar arteries and could be used even when either artery was damaged. The PIA is a branch of
the common interosseous artery and runs down longitudinally in the intermuscular septum between the extensor carpi ulnaris and
extensor digiti minimi. PIA appears to be relatively constant in position, and provides a reliable blood supply in the posterior aspect of
the forearm. The PIA flap is reliable in its designs, even to making it possible to close the donor site primarily. It provides not only a
thin, pliable coverage of the hand and upper extremity, but also a neurosensory flap. Technically, the dissection of the PIA pedicle
along its course needs a high learning curve, because it might present the risk of venous congestion, ischemic flap necrosis, and injury
to the PIN. Although the flap dissection seems to be difficult, it still offers increased versatility in reconstructions of the hand, foot,
and upper extremity. Its popularity has increased, becoming a valuable flap due to its arc of rotation, due to its safety and low morbidity.