The Integrated Nerve, Discoligamentous Complex, and Vertebra Scoring System for Thoracolumbar Junction (TLJ) Injury

Area of Science:

• Spine surgery
• Orthopedic research
• Trauma classification

Background:

• Existing thoracolumbar junction (TLJ) injury classifications (AO, TLICS, LSC) lack clarity regarding mechanism, tissue involvement, morphology, and severity.
• This ambiguity complicates clinical decision-making for TLJ injuries.

Purpose of the Study:

• To develop an integrated scoring system for TLJ injuries.
• To enhance clinical decision-making and treatment strategies for TLJ injuries.
• To improve reliability and prognostic accuracy in managing TLJ trauma.

Main Methods:

• Literature review of TLJ classifications and the TLICS 4-point treatment scale.
• Retrospective proposal of scoring and treatment strategies.
• Validation of patient outcomes (VAS, ODI) post-surgical treatment.
• Evaluation of interobserver and intraobserver reliability.

Main Results:

• Nerve (5 points), discoligamentous complex (DLC) (4 points), and vertebral bone (3 points) are key components.
• Surgical intervention is recommended for nerve injury ≥3 and/or bone + DLC injury ≥4.
• Conservative treatment is advised for nerve injury ≤1 or bone + DLC score <4.
• Specific recommendations for LSC ≥7 and ADLC=2 within LSC ≤6 are outlined.
• The integrated system demonstrated substantial reliability.

Conclusions:

• The developed integrated scoring system is reliable for TLJ patients.
• It effectively differentiates injury morphology from severity.
• Provides a practical decision-making strategy for TLJ injuries, leading to desirable prognoses.