Anatomical Variations of the Medial Plantar Artery Flap: A Cadaveric Study with Clinical Applications.

The medial plantar artery flap (MPAF) presents both unique value as well as significant challenges. As the plantar foot has specific anatomy, the use of the MPAF to recreate this highly specialized area may provide improvements in durability and rates of limb salvage. The purpose of this study is to establish the anatomic course of the branching patterns of the medial plantar artery (MPA) and provide a foundation for MPA flap nomenclature as it is related to design and elevation. Thirty-seven fresh frozen cadaver feet were used for dissection: 20 right and 17 left sided limbs. Anatomic measurements recorded included: branching pattern of the MPA, bifurcation distance of the superficial branch (SB) and deep branch (DB) from the origin of the MPA, distance from the MPA origin to the anterior colliculus of the medial malleolus, and the distance from the SB and the DB to the navicular tuberosity. The MPA was found to bifurcate into SB and DB in 30 (81%) specimens; 6 (16%) specimens had only a SB, whereas 1 (3%) specimen had only a DB, which had not been previously described. The distance from the anterior colliculus to the MPA was 3.0 cm, MPA to the distal bifurcation was 2.9 cm, and navicular tuberosity to the SB and DB was 2.2 cm and 1.3 cm, respectively. Minimizing the complexity of the dissection with the use of more reliable landmarks and a deeper understanding of the anatomy may reduce complications and allow for more reproducible outcomes when utilizing the MPAF.

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