Do Modic Type 1 End-Plate Changes Represent Infection? For/Against

Area of Science:

• Orthopedics
• Infectious Diseases
• Radiology

Background:

• Modic changes, especially type 1, pose a clinical and radiological challenge in chronic low back pain.
• The infectious hypothesis suggests low-virulence pathogens, like *Cutibacterium acnes*, may cause these lesions.
• Understanding the pathogenesis of Modic changes is crucial for effective treatment.

Purpose of the Study:

• To review the infectious hypothesis for Modic changes.
• To analyze clinical trial data, including the Modic Antibiotic Spine Therapy and Antibiotics in Modic Changes studies.
• To examine disk biopsy evidence and propose an integrative model for Modic changes.

Main Methods:

• Literature review of clinical trials and disk biopsy studies.
• Analysis of evidence supporting and refuting the infectious hypothesis.
• Synthesis of findings to propose an integrative mechanical-infectious model.

Main Results:

• Clinical trials offer landmark but sometimes divergent perspectives on antibiotic treatment efficacy.
• Disk biopsy studies face challenges in distinguishing true infection from contamination.
• Evidence suggests a potential interaction between mechanical and infectious factors in Modic changes.

Conclusions:

• Bone marrow inflammation in Modic changes might represent an immune response to intradiskal bacteria.
• An integrative model combining mechanical and infectious factors is proposed.
• Standardized research protocols are essential to clarify the role of targeted therapies for Modic changes.