Abstract
The Posterior Interosseous Artery flap is a fasciocutaneous flap based on the Posterior Interosseous artery which lies invested by the fascial septum between the Extensor carpi ulnaris and Extensor Digiti Minimi where it gives off septocutaneous branches that spread out on the deep fascia to form longitudinal fascial arcades as well as supply the deep extensors. The conventional flap based on these perforators is restricted to the middle-thirds of the dorsum of forearm. Preservation of the perforators from the Interosseous Recurrent Artery by proximal ligation of the Interosseous Recurrent Artery and by protecting the index septum prolongation carrying the perforators of IRA can help us to recruit larger tissue in the flap. A total of 20 clinical cases and 10 cadaveric dissections were done to objectively define this technique.
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Appendix
Appendix
Site of entry of PIA in the posterior compartment
14–15CM | 15–16CM | 16–17CM | |
CADAVERIC | nil | 3 | 7 |
CLINICAL | 2 | 2 | 16 |
Number of perforators from the PIA
no. of perf | 1 | 2 | 3 | 4 | 5 |
CADAVERIC | nil | 1 | 4 | 5 | nil |
CLINICAL | nil | nil | 3 | 15 | 2 |
Distance of the distal most perforator from the ulnar styloid process
7.5–8.5CM | 8.5–9.5CM | 9.5–10.5CM | 10.5–11.5CM | |
CADAVERIC | 2 | 6 | 2 | nil |
CLINICAL | 7 | 9 | 3 | 1 |
Site of anastomosis between PIA and AIA from ulnar styloid process
2.0–2.5 | 2.5–3.0 cm | 3.5–4.5CM | |
CADAVERIC | 9 | 1 | nil |
CLINICAL | 11 | 7 | 2 |
Origin of IRA
site | oblique cord | APL/Sup |
cadaveric | 7 | 3 |
clinical | 11 | 9 |
Plane of IRA
PLANE OF IRA | b/w anc, sup | fibres of sup/deeper |
cadaveric | 7 | 3 |
clinical | 13 | 7 |
Number of perforators from IRA
1 | 2 | 3 | |
CADAVERIC | 4 | 5 | 1 |
CLINICAL | 7 | 12 | 1 |
Site of flap
MIDDLE 1/3 | mid-prox (min ext) | ext to prox1/4 | |
NO.OF FLAP | 3 | 10 | 7 |
Flap length (vertical)
length | 5–7CM | 7–9CM | 9–11CM | 11–14CM |
NO.OF FLAPS | 4 | 9 | 1 | 6 |
Flap breadth (horizontal)
Breadth | 3–4 cm | 4–5 cm | 5–6 cm | 6–7 cm | 7–8 cm |
NO.OF FLAPS | 6 | 6 | 4 | 3 | 1 |
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Prasad, R., Balakrishnan, T.M. Role of Interosseous Recurrent Artery Perforators in the Posterior Interosseous Artery Flap. J Hand Microsurg 7, 36–41 (2015). https://doi.org/10.1007/s12593-014-0161-3
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DOI: https://doi.org/10.1007/s12593-014-0161-3