Ebook Facial flap surgery (E): Part 2
➤ Gửi thông báo lỗi ⚠️ Báo cáo tài liệu vi phạmNội dung chi tiết: Ebook Facial flap surgery (E): Part 2
Ebook Facial flap surgery (E): Part 2
CHAPTER 8EarANATOMY AND BIOMECHANICSThe ear is a complex cartilaginous structure enveloped by a thin fascia. The anterior surface is highly convoluted Ebook Facial flap surgery (E): Part 2d with a rich topography (Fig. 8.1). The skin here is stretched tight like a drum and provides minimal resource for adjacent tissue transfer. The helical rim creates a sharp reflection posterior to which the skin and subcutaneous tissues are somewhat thicker, more richly vascular, and mobile. The lo Ebook Facial flap surgery (E): Part 2wer helix and lobule contain abundant fat and are loose and freely mobile. Toward the reflection with the mastoid scalp, the ear receives tendinous muEbook Facial flap surgery (E): Part 2
scular fibers from the auricular musculature which are more adherent to the perichondrium.374Helix375Figure 8.1 Nomenclature of the earrhe vascular suCHAPTER 8EarANATOMY AND BIOMECHANICSThe ear is a complex cartilaginous structure enveloped by a thin fascia. The anterior surface is highly convoluted Ebook Facial flap surgery (E): Part 2erior auricular artery, a direct branch oil of the external carotid. The superior helical rim, the triangular fossa, and the scapha are supplied by a superior auricular branch off of the superficial temporal artery, rhe conchal bowl is largely supplied by perforators from the posterior auricular art Ebook Facial flap surgery (E): Part 2ery.376LateralPosteriorFigure 8.2 Arterial supply of the ear377Sensory innervation of the ear is from three sources (Fig. 8.3). The majority of the eaEbook Facial flap surgery (E): Part 2
r is innervated from the greater auricular nerve that arises from the second and third cervical nerves and passes over the stcmomastoid to arrive at tCHAPTER 8EarANATOMY AND BIOMECHANICSThe ear is a complex cartilaginous structure enveloped by a thin fascia. The anterior surface is highly convoluted Ebook Facial flap surgery (E): Part 2ch is a direct branch from the mandibular nerve of the fifth cranial nerve. The inner conchal bowl and outer canal derive sensory input from cranial nerves Vll, IX, and X.378Auriculotemporal nerve (Trigeminal) v3Conchal bowl supplied by VII, IX, X (Facial nerve, Glossopharyngeal nerve, Vagus nerve)G Ebook Facial flap surgery (E): Part 2reater auricularnerve c2, c3379CHAPTER 8EarANATOMY AND BIOMECHANICSThe ear is a complex cartilaginous structure enveloped by a thin fascia. The anterior surface is highly convolutedCHAPTER 8EarANATOMY AND BIOMECHANICSThe ear is a complex cartilaginous structure enveloped by a thin fascia. The anterior surface is highly convolutedGọi ngay
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