New imaging modalities to predict and evaluate osteoarthritis progression

Area of Science:

• Orthopedics
• Radiology
• Biomarkers

Background:

• Osteoarthritis (OA) is a degenerative joint disease characterized by structural changes.
• Accurate assessment of OA progression is crucial for effective management and treatment strategies.
• Established imaging techniques have limitations in capturing subtle structural changes over time.

Purpose of the Study:

• To review the role of various imaging modalities in evaluating structural osteoarthritis progression.
• To focus on less common or recently evolved imaging methods and biomarkers.
• To synthesize findings from longitudinal studies on structural OA progression.

Main Methods:

• Narrative review of scientific literature.
• Discussion of imaging modalities including plain radiography (novel joint space width assessment, fractal signature analysis), ultrasonography (synovitis assessment), magnetic resonance imaging (semiquantitative, quantitative, compositional evaluation), and positron emission tomography.
• Emphasis on findings from longitudinal studies.

Main Results:

• Plain radiography offers evolving approaches for assessing joint space width and structural analysis.
• Ultrasonography aids in evaluating synovitis, an important factor in OA.
• Magnetic resonance imaging provides detailed semiquantitative, quantitative, and compositional evaluations of joint structures.
• Positron emission tomography presents a complementary imaging option for OA assessment.

Conclusions:

• Advanced imaging modalities and biomarkers are increasingly important for monitoring structural osteoarthritis progression.
• Novel applications of established techniques and emerging methods offer enhanced insights into OA pathophysiology.
• Longitudinal imaging data are essential for understanding disease trajectory and evaluating therapeutic interventions.