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Related Experiment Video

Updated: Apr 16, 2026

Microvascular Decompression: Salient Surgical Principles and Technical Nuances

Microvascular Decompression: Salient Surgical Principles and Technical Nuances

Published on: July 5, 2011

Cavernous sinus thrombosis progression from trismus.

Jin Yong Cho¹, Hyeon Min Kim¹, Jae Young Ryu¹

¹Department of Oral and Maxillofacial Surgery, Gachon University Gil Medical Center, Incheon, Korea.

Journal of the Korean Association of Oral and Maxillofacial Surgeons

|March 6, 2015

Summary

Trismus, or limited mouth opening, can signal serious infection. Prompt recognition of masticatory space infections is crucial to prevent potentially life-threatening cavernous sinus thrombosis.

Keywords:

Cavernous sinus thrombosis Dental focal infection Trismus

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Area of Science:

Oral and Maxillofacial Surgery
Neurology
Infectious Diseases

Background:

Trismus is a common symptom encountered in Oral and Maxillofacial Surgery.
Infections involving the masticatory space pose a risk for serious complications.
Early identification of the etiology of trismus is essential for patient management.

Observation:

A patient presented with trismus, characterized by limited mouth opening.
The patient's condition progressed, indicating a potential spread of infection.
Diagnostic evaluation was initiated to determine the underlying cause of the limited jaw mobility.

Findings:

The patient's trismus was linked to an infection in the masticatory space.
The infection was located near the pterygoid plexus, a critical anatomical region.
The clinical progression raised suspicion for cavernous sinus thrombosis.

Implications:

This case highlights the importance of considering cavernous sinus thrombosis in patients with trismus secondary to masticatory space infections.
Timely diagnosis and intervention are critical for managing this severe complication.
Understanding the pathway of infection spread is vital for preventing adverse outcomes in oral and maxillofacial surgery patients.