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Anatomic basis for vascularized outer-table calvarial bone flaps.

R Casanova, D Cavalcante, J C Grotting

    Plastic and Reconstructive Surgery
    |September 1, 1986
    PubMed
    Summary
    This summary is machine-generated.

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    Vascularized calvarial bone flaps can be safely designed using the temporal aponeurosis, innominate fascia, and periosteum. This study defines scalp and calvarium vascular networks for improved flap design.

    Area of Science:

    • Anatomy
    • Surgical Research
    • Vascular Biology

    Background:

    • Calvarial bone flaps are crucial in reconstructive surgery.
    • Optimizing vascular supply to these flaps is essential for successful outcomes.
    • Current flap designs may not fully leverage the intricate vascular network of the scalp and calvarium.

    Purpose of the Study:

    • To meticulously map the vascularization of the scalp and calvarium.
    • To inform the design of enhanced vascularized split- or full-thickness calvarial bone flaps.
    • To identify specific vascular layers and perforators crucial for flap viability.

    Main Methods:

    • Cadaveric dissection and selective dye injections.
    • Detailed analysis of superficial temporal and internal maxillary artery networks.

    Related Experiment Videos

  • Histological examination of scalp and calvarium layers, including periosteum and innominate fascia.

    • Main Results:

    • A complex horizontal and vertical vascular network was identified within and between scalp layers.
    • The periosteum receives significant irrigation from superficial and deep temporal arteries via proximal branches.
    • Multiple small, vertical perforators from the periosteum sustain the outer table of the calvarium.

    Conclusions:

    • Vascularized outer-table calvarial flaps can be safely pedicled using the temporal aponeurosis, innominate fascia, and periosteum.
    • Exclusion of the galea or temporal muscle is feasible, simplifying flap design.
    • This detailed vascular mapping provides a foundation for more reliable reconstructive techniques.