Evaluation of the vessels of the lower leg before microsurgical fibular transfer. Part I: anatomical variations in the arteries of the lower leg.
Perfusion of a fibular flap is based on the peroneal artery. To avoid ischaemia of the lower leg postoperatively after the artery has been sacrificed, adequate perfusion must be guaranteed preoperatively. Although common anatomical variations and pathological changes are well recognised, the best way to evaluate the vascular system preoperatively is controversial. Our aim was to identify anatomical vascular patterns that may jeopardise either the limb or the flap while the fibula is being harvested, and provide a few simple rules for the assessment of preoperative evaluation techniques. We dissected 128 lower legs preserved in formalin and evaluated them for the incidence of vascular anatomical variants. In addition we measured absolute and relative loss of volume. Volume loss from the peroneal artery was considerable, with a loss of 23%. On two occasions the peroneal artery mimicked the anterior tibial artery in its course to the dorsalis pedis artery at the dorsum of foot; four times the tibial artery arose directly from the peroneal artery; and five times only a rudimentary posterior tibial artery could be found. There are numerous vascular variants in the lower leg, some of which could put the flap or the limb at risk. We therefore think that preoperative evaluation of the vascular system is advisable.
Hölzle
Frank
F
Department of Oral and Maxillofacial Surgery, Klinikum rechts der Isar, Technische Universität München, Ismaninger Strasse 22, Munich, Germany. hoelzle@mkg.med.tum.de
Ristow
Oliver
O
Rau
Andrea
A
Mücke
Thomas
T
Loeffelbein
Denys J
DJ
Mitchell
David A
DA
Wolff
Klaus-Dietrich
KD
Kesting
Marco Rainer
MR
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001158:Arteries / Q000033:anatomy & histology; D016025:Bone Transplantation / Q000379:methods*; D002102:Cadaver; D005260:Female; D005360:Fibula / Q000098:blood supply / Q000601:surgery*; D005528:Foot / Q000098:blood supply; D058752:Free Tissue Flaps / Q000098:blood supply*; D006801:Humans; D007866:Leg / Q000098:blood supply*; D008297:Male; D008866:Microsurgery; D008875:Middle Aged; D018482:Muscle, Skeletal / Q000098:blood supply; D011150:Popliteal Artery / Q000033:anatomy & histology; D011300:Preoperative Care; D016909:Tibial Arteries / Q000033:anatomy & histology; D020858:Tissue and Organ Harvesting / Q000379:methods*