Thoracic Spine – Anterior Approach

Modern Study Review (AI-Generated)

High-Yield Summary

The anterior thoracic spine approach provides direct access to anterior vertebral pathology such as fractures, infections, tumors, and deformity correction. It remains the gold standard for extensive anterior decompression and reconstruction but is increasingly complemented or replaced by minimally invasive and thoracoscopic techniques in select cases. Mastery requires precise management of thoracic cavity structures and vigilant protection of neurovascular and pulmonary anatomy.

Applied Anatomy & Intervals

Internervous Interval

• No classic internervous plane exists.
• The approach involves muscle fiber-splitting of latissimus dorsi and serratus anterior muscles and blunt dissection through the thoracic cavity.

Anatomic Landmarks

• Incision placed midway between the thoracic spine and scapula, extending anteriorly to the anterior axillary line.
• Typically performed 2 ribs above the targeted vertebral level for optimal exposure.
• Palpation of ribs and scapula guides incision placement and rib resection level.

Patient Positioning & Setup

Table Type

• Standard operating table with lateral decubitus capability.

Patient Position

• Lateral decubitus with the operative side up.
• Patient secured with a bean bag for stability.

Specialized Equipment

• Single-lung ventilation or bronchial blocker for lung deflation.
• Rib resection instruments: rib cutters, periosteal elevators.
• C-arm fluoroscopy positioned for AP and lateral imaging as needed.

Surgical Technique (The “Vital Steps”)

Incision & Superficial Dissection

• Longitudinal skin incision halfway between spine and scapula, extending to anterior axillary line.
• Divide latissimus dorsi muscle fibers in line with the incision.
• Divide serratus anterior muscle fibers similarly down to the rib surface.

Deep Dissection & Exposure

• Elevate periosteum subperiosteally off the rib to expose it fully.
• Resect the rib as posteriorly as possible to maximize vertebral exposure.
• Nick the parietal pleura with a scalpel and enter the pleural cavity bluntly.
• Deflate the ipsilateral lung and retract it anteriorly to expose vertebral bodies.
• Identify and protect the esophagus medially; incise pleura lateral to esophagus and retract medially.
• Ligate intercostal vessels cautiously; avoid unnecessary ligation to preserve spinal cord blood supply.

The “Danger Zone”

Post-Operative Pearl

Encourage early mobilization but avoid excessive twisting or lateral bending of the thoracic spine for 4-6 weeks to protect anterior reconstruction and allow rib resection sites to heal.

Classic Clinical Notes

Thoracic spine – anterior approach

Position:

• Lateral with bean bag

Incision:

• Usually right-sided approach
• Halfway between spine and scapula ? anterior axillary line
• 2 ribs above the level to be accessed

Dissection:

• Divide latissimus dorsi in line with skin
• Divide serratus anterior in line with skin down to rib
• Expose rib subperiosteally
• Resect rib as far posterior as possible
• Nick pleura with knife
• Enter pleura bluntly
• Deflate lung and retract anteriorly
• Identify esophagus
• Incise pleura over lateral side of esophagus and retract
• Tie off intercostal vessels (avoid if possible due to blood supply to spinal cord)

Dangers:

• Intercostal vessels

During rib resection

During exposure of vertebral body

• Lung

Last Updated on January 25, 2026 by orthonet