Pedicled perforator flaps in the lower leg enable reconstruction of a variety of local defects without microvascular anastomoses and with minimal donor-site morbidity. This study determined the reliable locations of the lower leg perforators.
Twenty lower limbs harvested from fresh cadavers were used. In 15 specimens, colored latex intra-arterial injections were performed followed by dissection in the suprafascial plane; perforators with a diameter greater than 0.5 mm were located with respect to a line between the tips of the medial and lateral malleoli. In five further specimens, intra-arterial injection of a barium sulfate/gelatin mixture was performed and computed tomographic scans were acquired. Cluster analysis was performed to determine the 5-cm intervals where perforators were most commonly encountered within each septum.
Perforators were located in discrete intermuscular septa. Those arising from the anterior tibial artery were predominantly encountered within three septa, and those of the peroneal and posterior tibial arteries were found within discrete septa. Reliable perforators were found within three distinct 5-cm intervals: at 4 to 9 cm, 13 to 18 cm, and 21 to 26 cm from the intermalleolar line. The anterior tibial artery perforators clustered in the distal and proximal intervals, those of the peroneal artery in the middle interval, and those of the posterior tibial artery in all three intervals.
Reliable perforators from the anterior tibial, posterior tibial, and peroneal arteries can be found in distinct 5-cm intervals within intermuscular septa. This may aid in the design of pedicled perforator flaps of the lower leg.
From the Department of Plastic Surgery, University of Texas Southwestern Medical Center.
Received for publication August 10, 2007; accepted November 14, 2007.
Michel Saint-Cyr, M.D.; Department of Plastic Surgery; University of Texas Southwestern Medical School; 1801 Inwood Drive; Dallas, Texas 75201; email@example.com
Disclosure: The authors have no financial interests in this research project or in any of the techniques or equipment used in this study, and neither of the authors has any financial relationships, interests, or commercial associations with the products, drugs, or devices mentioned in this article.