Shifting Perspectives in Shoulder Instability: The Emerging Role of the Coronal Glenoid Tilt Angle and 3D Assessment.

BACKGROUND: Anterior glenohumeral instability is a multifactorial condition heavily influenced by the baseline bony architecture of the shoulder joint. Historically, surgical stratification has relied on defect-based models, prioritizing the measurement of acquired volumetric bone loss. However, recent literature underscores the critical role of inborn congenital morphology. AIM/OBJECTIVES: This commentary contextualizes the recent study by Sundar et al., which introduces the Coronal Glenoid Tilt Angle (GTA) as a novel, independent risk factor for instability measured via 3D-CT. DISCUSSION: We highlight the clinical bottleneck that exists between advanced 3D spatial profiling and our current surgical algorithms. CONCLUSION: Ultimately, we advocate for the development of a comprehensive, multidomain instability score that synthesizes a patient's clinical profile, acquired volumetric defects, and intrinsic congenital restraints to better guide personalized interventions, ranging from isolated arthroscopic soft-tissue repairs to robust bone-block stabilizations.