Pterygoalar ligament

Pterygoalar ligament is a small fibrous band in the human body that extends from the Pterygoid process of the Sphenoid bone to the Hamulus of the Medial pterygoid plate. It is a part of the human head anatomy and plays a significant role in the functioning of the musculoskeletal system.

Structure

The Pterygoalar ligament is a thin, fibrous band that originates from the lateral side of the pterygoid process, specifically from the upper part of the posterior border. It extends downwards and medially to attach to the hamulus of the medial pterygoid plate. This ligament divides the Pterygomaxillary fissure into two parts: the upper and lower pterygomaxillary fissures.

Function

The Pterygoalar ligament serves as a pulley for the tendon of the Tensor veli palatini muscle. This muscle is responsible for tensing the Soft palate and opening the Eustachian tube, which helps in equalizing the pressure in the middle ear.

Clinical significance

Due to its location and function, the Pterygoalar ligament can be involved in several medical conditions. For instance, inflammation or enlargement of the Tensor veli palatini muscle can put pressure on the ligament, leading to pain and discomfort. This condition is often seen in patients with Temporomandibular joint disorder.

See also

• Pterygoid process
• Sphenoid bone
• Hamulus
• Medial pterygoid plate
• Tensor veli palatini