Parkinson's triangle

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Synonyms
Triangular Space of Parkinson, Infratrochlear triangle

The Parkinson triangle, also known as the Triangular Space of Parkinson, was first described in 1965 by D. Parkinson as an approach to the Cavernous sinus[^1].

Anatomy

The Parkinson triangle is formed by the first division of the Trigeminal nerve (Ophthalmic nerve), the Trochlear nerve, and the lateral wall of the Cavernous sinus[^2].

Figure

Parkinson triangle
Visualization of the infratrochlear triangle (Parkinson triangle) and the paramedian triangle in the region of the cavernous sinus. Figure adapted from Drazin, Doniel, et al. Intracranial anatomical triangles: a comprehensive illustrated review. Cureus 9.10 (2017).

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