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Aneurysmal arteriovenous fistulae (AVF) for haemodialysis often need surgical closure. We present a technique which consists of inserting the AVF into a constrictive perivenous mesh tube, thereby bringing the caliber of the AVF down to its normal size and restoring the normal shape of the forearm. Nine patients underwent AVF constriction without postoperative events. All AVFs were patent at 4 months. This technique also has the advantage of saving veins which, of course, is worthwhile in patients under haemodialysis.