Types of Functional Endoscopic Sinus Surgery

Introduction

Functional Endoscopic Sinus Surgery (FESS) has become one of the most preferred and effective surgical treatments for chronic sinus problems. When medications, nasal sprays, and lifestyle changes fail to offer relief, FESS helps restore normal breathing, drainage, and sinus function using a minimally invasive 

What Is Functional Endoscopic Sinus Surgery?

Functional Endoscopic Sinus Surgery is a minimally invasive surgical procedure performed using a thin tube called an endoscope, which is inserted into the nose. The goal of FESS is to clear blocked sinus pathways, remove inflammation, and improve airflow, allowing the sinuses to drain properly.

Unlike traditional surgeries, FESS does not require external cuts. Instead, surgeons use advanced cameras and instruments inside the nasal cavity to precisely remove tissue, polyps, or blockages.

FESS is commonly recommended for:

• Chronic sinusitis
• Nasal polyps
• Deviated septum
• Blocked sinus drainage
• Fungal sinus infections
• Recurrent infections not responding to medicines

The outcome is reduced sinus pressure, better breathing, and fewer infections.

Types of Functional Endoscopic Sinus Surgery

Below are the most common types of FESS procedures performed based on the patient’s condition and level of sinus blockage.

1. Maxillary Antrostomy :- Maxillary antrostomy is one of the most frequently performed FESS procedures. It targets the maxillary sinus, which is located beneath the cheeks on both sides of the nose.

Why it’s done:

• To remove blockages in the maxillary sinus opening
• To treat chronic maxillary sinusitis
• To improve natural sinus drainage

How it works:

In this procedure, the surgeon enlarges the sinus opening and removes infected or swollen tissue. This helps the sinus drain better and prevents future infections. Patients with symptoms like cheek pressure, nasal discharge, and congestion often benefit the most from this surgery.

2. Ethmoidectomy :- Ethmoidectomy focuses on the ethmoid sinuses, located between the eyes. These sinuses are made of several small air cells, which often get infected or inflamed.

Why it’s done:

• To treat chronic ethmoid sinusitis
• For patients with nasal polyps
• When infection spreads from the ethmoid to other sinuses

How it works:

The surgeon removes the thin bone partitions between the ethmoid air cells, clearing out infected tissue. This improves breathing and reduces pressure around the eyes and nose. Ethmoidectomy is often combined with other FESS procedures, especially in patients with severe sinus disease.

3. Sphenoidotomy :- Sphenoidotomy targets the sphenoid sinuses, located deep within the skull behind the nasal cavity. Because of its internal location, this area is harder to reach and requires high precision.

Why it’s done:

• To treat chronic sphenoid sinusitis
• For fungal infections
• To remove polyps blocking sphenoid sinuses
• When headaches and vision disturbances occur due to blockage

How it works:

Using an endoscope, the surgeon opens the sphenoid sinus, removes blockages, and improves ventilation. This procedure is especially important for patients with deep sinus infections that don’t respond to medications.

4. Frontal Sinusotomy :- Frontal sinusotomy involves opening the frontal sinuses, located above the eyes near the forehead. It is usually recommended when the frontal drainage pathway becomes blocked.

Why it’s done:

• Chronic frontal sinusitis
• Severe forehead pressure and headaches
• Recurrent infections
• Narrow or obstructed frontal sinus drainage pathway

How it works:

The surgeon opens and enlarges the frontal sinus drainage passage to ensure proper airflow. Frontal sinus surgeries are more complex because the sinus structure varies from person to person. After surgery, patients often experience relief from forehead pressure, headaches, and nasal congestion.

5. Turbinate Reduction (Endoscopic Turbinoplasty) :- Though not strictly a sinus procedure, turbinate reduction is often performed along with FESS to improve overall nasal airflow.

Why it’s done:

• Enlarged turbinates causing nasal blockage
• Swelling due to allergies
• Chronic breathing difficulties

How it works:

Using endoscopic guidance, the surgeon reduces the size of the turbinates without damaging their function. This helps in easier breathing and better sinus drainage.

6. Balloon Sinuplasty (A Minimally Invasive Alternative) :- Balloon sinuplasty is a modern, less invasive alternative performed in selected cases. While not exactly FESS, it is often mentioned alongside FESS as an effective sinus-opening technique.

Why it’s done:

• Mild to moderate sinus blockage
• Patients wanting a quick recovery
• Chronic sinusitis without nasal polyps

How it works:

A balloon catheter is inserted into the blocked sinus passage and gently inflated to widen the pathway. No tissue is removed, making it a safe and fast option with minimal downtime.

Which Type of FESS Is Right for You?

Your ENT specialist will recommend the suitable type of FESS based on:

• The severity of your sinus blockage
• The specific sinuses involved
• Presence of nasal polyps or structural issues
• Your medical history and symptoms

Often, surgeons combine multiple types of FESS to address complex sinus problems effectively.

Conclusion

Functional Endoscopic Sinus Surgery has transformed the way chronic sinus issues are treated. With multiple types of FESS available—such as maxillary antrostomy, ethmoidectomy, sphenoidotomy, and frontal sinusotomy—patients can receive highly personalized and precise treatment for long-lasting relief.