Trochlea of superior oblique

Trochlea of Superior Oblique

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Trochlea of superior oblique

The Trochlea of Superior Oblique is a significant anatomical structure in the human eye. It is a pulley-like system that allows the superior oblique muscle to function effectively. The trochlea is a fibrocartilaginous loop through which the tendon of the superior oblique muscle passes.

Anatomy

The trochlea is located at the front part of the medial wall of the orbit, above the medial palpebral ligament. It is attached to the body by a ligament, the trochlear ligament, which is connected to the frontal bone of the skull.

Function

The primary function of the trochlea is to act as a pulley for the superior oblique muscle. This muscle is one of the extraocular muscles that control the movements of the eye. The superior oblique muscle passes through the trochlea before attaching to the top of the eye. This arrangement allows the muscle to pull the eye downwards and towards the nose (intorsion), and also helps to abduct and depress the eye.

Clinical Significance

Dysfunction of the trochlea can lead to a condition known as superior oblique palsy, which is characterized by eye misalignment. This condition can result in double vision and other visual disturbances. Treatment typically involves surgery to correct the alignment of the eyes.

See Also

• Superior oblique muscle
• Orbit (anatomy)
• Extraocular muscles