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Medial Sural Artery Perforator Flap Radiographic Vascular Characteristics
Michael A Cirelli1, Justin M Hintze2, Taylor B Cave2
1Mayo Clinic Alix School of Medicine, Mayo Clinic, Phoenix, Arizona, USA.
Background:
Medial sural artery perforator (MSAP) flaps are favored in head and neck reconstruction for skin paddle pliability, pedicle length, and low donor site morbidity. We sought to characterize MSA vascular branching patterns based on the Dusseldorp et al. classification system using pre-operative lower extremity computed tomography angiogram (CTA).
Methods:
We conducted a retrospective review of 153 scans from 78 patients who underwent CTA prior to head and neck reconstruction at our institution. Primary data points included MSA branching pattern, branch dominance, and vessel depth.
Results:
The type IIa branching type was most prevalent and the MSA lateral branch most frequently dominant, and they were significantly related to one another. There was no significant difference in depth between branching patterns.
Conclusions:
Lower extremity CTA provides valuable insight to vascular anatomy for MSAP flap harvest. The type IIa and IIb types may be associated with lateral and medial MSA dominance, respectively.
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