Abstract
Vascularized proximal fibular epiphyseal transfer is a reconstruction method for joints and growing bones. The authors investigated the vascular supply of the proximal fibula, including skin perforators, for suitability in creating an osteocutaneous flap. Twenty fresh cadaveric knees were studied using computed tomographic angiography combined with anatomical dissection. Three-dimensional angiography was used to develop an overview, and multiplanar two-dimension angiography was used for detailed data collection. Anatomical dissection verified by angiography was used to locate skin perforators of the proximal part of the anterior tibial artery. Proximal fibular bone perforators from the anterior tibial artery were found to arise either from the anterior tibial recurrent artery, the posterior tibial recurrent artery or the circumflex fibular artery in every specimen (100%), whereas perforators from the inferolateral genicular artery met those criteria in 12 of 18 specimens (66.7%). In the proximal half of 20 anterior tibial arteries, 129 skin perforators with a diameter larger than 0.5mm were found. There were 54 potential septocutaneous skin perforators between the extensor digitorum longus and the peroneus longus muscles (EDL/PL), and 18 between the extensor digitorum longus and the tibialis anterior muscles (TA/EDL). Skin perforators from the inferolateral genicular artery emerging from the posterolateral corner of the knee had a diameter of < 0.5mm. Based on this cadaveric study, the reverse flow anterior tibial artery pedicle and the EDL/PL or TA/EDL skin perforators can be considered as options for osteocutaneous proximal fibular transfers.
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