Temporal Branch of Facial Nerve

The temporal branches of the facial nerve are often called the frontal branches when they reach the supraciliary region. The nerves provide motor innervation to the frontalis, the corrugator, the procerus, and, occasionally, a portion of the orbicularis oculi muscles. Nerve injury is revealed by inability to raise the eyebrow or wrinkle the forehead.

The temporal branch or branches of the facial nerve leave the parotid gland immediately inferior to the zygomatic arch (Fig. 6-3). The general course is from a point 0,5 cm below the tragus to a point 1,5 cm above the lateral eyebrow (2). It crosses superficial to the zygomatic arch an average of 2 cm anterior to the anterior concavity of the external auditory canal, but in some cases, it is as near as 0,8 cm and as far as 3.5 cm anterior to the external auditory canal (Fig. 6-4) (3). As it crosses the lateral surface of the arch, the temporal branch courses along the undersurface of the temporoparietal fascia, and subgaleal fascia (see Fig. 6-1). As the nerve courses anterosuperiorly toward the frontalis muscle, it lies on the undersurface of the temporoparietal fascia (Fig. 6-5), and

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Figure 6- 5 Anatomic dissection showing position of the temporal branch of the facial nerve in relation to the temporoparietal fascia and zygomatic arch. The temporoparietal fascia is retracted inferiorly. The temporal branch of the facial nerve courses on its deep surface (or within the layer of fascia) anteriorly and superiorly (dashed lines), between the temporoparietal fascia and the fusion of the superficial layer of the temporalis fascia with the periosteum of the zygomatic arch.

Figure 6- 5 Anatomic dissection showing position of the temporal branch of the facial nerve in relation to the temporoparietal fascia and zygomatic arch. The temporoparietal fascia is retracted inferiorly. The temporal branch of the facial nerve courses on its deep surface (or within the layer of fascia) anteriorly and superiorly (dashed lines), between the temporoparietal fascia and the fusion of the superficial layer of the temporalis fascia with the periosteum of the zygomatic arch.

enters the frontalis muscle no more inferiorly than 2 cm above the level of the superior orbital rim. It commonly branches into three or four rami long its course. The anterior branches supply the superior portion of the orbicularis oculi muscle and the frontalis muscle. The posterior branch innervates the anterior auricular muscles.

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  • kauko
    What does the temporal branch of the facial nerve supply?
    10 months ago

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