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Journal List > Arch Hand Microsurg > v.24(4) > 1143619

Fujiwara, Matsushita, Maeba, Suzuki, and Fukamizu: Free Posterior Interosseous Artery Flap for Treatment of First Web Space Contracture: Methods of Venous Anastomosis

초록

Purpose:

First web space widening is crucial in the hand function. The skin on the dorsal side of the forearm can provide a thin and pliable skin suitable for first web space reconstruction. Although previous reports have described the use of the posterior interosseous artery (PIA) flap as a reverse-flow flap for treatment of first web space contracture, only a few have addressed its use as a free flap for this purpose. The caliber of the concomitant veins accompanying the PIA is usually small, which may give rise to a problem in the treatment.

Methods:

Seven patients with first web space contracture were treated with a free PIA flap and the details of the venous anastomosis method were elucidated.

Results:

Six of seven flaps survived. In a post-burn case, a flap was lost by late thrombosis. The PIA is anastomosed end-to-end to the dorsal branch of the radial artery. There are two choices for the recipient venous pedicle: concomitant veins of radial artery and a tributary of the cephalic vein. In our cases, there were four types of venous anastomosis. An average postoperative increase of the thumb radial abduction was 36° and that of the palmar abduction was 35°.

Conclusion:

Since the caliber of the concomitant veins accompanying the PIA is small, a careful scheme for venous anastomosis is essential in the treatment of first web space contracture using the free PIA flap.

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REFERENCES

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ahm-24-408f1.tif
Fig. 1.
(A) Preoperative palmar view. (B) Preoperative lateral view. (C) Free posterior interosseous artery flap design. The mark X indicates the position of the cutaneous perforators confirmed with color Doppler examination. (D) Appearance of flap harvest. (E) Intraoperative palmar view. (F) Intraoperative lateral view. (G) A vascular anastomotic site (an enlargemant of the area enclosed by dots in [F]). (H) Palmar view 7 months after surgery. (I) Lateral view 7 months after surgery.
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ahm-24-408f2.tif
Fig. 2.
(A) Preoperative palmar view. (B) Preoperative lateral view. (C) Palmar view 17 months after surgery. (D) Lateral view 17 months after surgery.
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ahm-24-408f3.tif
Fig. 3.
Types of venous anastomoses. Left panels: before vascular anastomosis, right panels: after vascular anastomosis. (A) Type 1: two concomitant veins of PIA were anastomosed to two concomitant veins of radial artery. (B) Type 2: one concomitant vein of PIA was anastomosed to one concomitant vein of radial artery and the other concomitant vein of PIA was done to a tributary of the cephalic vein. (C) Type 3: junction of concomitant veins accompanying PIA was anastomosed to one concomitant vein of radial artery. (D) Type 4: junction of concomitant veins accompanying PIA was anastomosed to a tributary of the cephalic vein. PIA: posterior interosseous artery, RA: radial artery, SubcV: subcutaneous vein. *Flap.
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Table 1.
Clinical profile of the patients
Case No. Age (yr) Sex Lesion site Cause Flap size width×length (mm) Number of anastomoses between pCV and rCV Number of anastomoses between pCV and subV Classification of venous anastomosis n Result Follow-up period (mo) Preoperative thumb abduction Postoperative thumb abduction
Radial abduction (°) Palmar abduction (°) Radial abduction (°) Palmar abduction (°)
1 47 M R Incomplete hand amputation 35×150 2 0 Type 1 CS 7 34 60 75 80
2 56 M L Degloving injury 35×150 1 (junction) 0 Type 3 CS 17 32 46 90 88
3 40 M L Press injury, open fracture 35×155 1 1 Type 2 CS 4 40 39 70 82
4 59 M L Burn 40×150 0 1 (junction) Type 4 CF - - - - -
5 35 M R Crush 40×160 2 0 Type 1 CS 10 28 39 55 76
6 45 M R Crush 35×160 2 0 Type 1 CS 9 30 35 56 70
7 60 M R Press injury 30×155 1 1 Type 2 CS 6 26 35 62 68

Type 1: two concomitant veins of PIA were anastomosed to two concomitant veins of radial artery. Type 2: one concomitant vein of PIA was anastomosed to one concomitant vein of radial artery and the other concomitant vein of PIA was done to a tributary of the cephalic vein. Type 3: junction of concomitant veins accompanying PIA was anastomosed to one concomitant vein of radial artery. Type 4: junction of concomitant veins accompanying PIA was anastomosed to a tributary of the cephalic vein. PIA: posterior interosseous artery, pCV: concomitant vein of posterior interosseous artery, rCV: concomitant vein of radial artery, subV: subcutaneous vein, M:male, R:right, L: left, CS: complete survival, CF: complete flap failure, -: not available.

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