Superior shoulder suspensory complex disruptions: from injury pattern recognition to treatment decision-making-a narrative review with institutional case illustrations.

Background: Disruptions of the superior shoulder suspensory complex (SSSC) represent an uncommon and heterogeneous spectrum of shoulder girdle injuries. Because the available literature is largely limited to case reports, small case series, and technical descriptions, management decisions remain challenging, particularly for double, triple, and quadruple disruption patterns. A clinically oriented synthesis is needed to translate fragmented evidence into practical diagnostic and treatment guidance. The purpose of this narrative review was to synthesize the available literature on SSSC disruptions into a practical diagnostic and treatment framework, supplemented by institutional illustrative cases. Emphasis was placed on injury pattern recognition, stepwise imaging assessment, instability markers, operative decision-making, and patient-specific modifiers, including age, bone quality, comorbidities, and functional demand. Methods: A narrative review of the literature was performed, including original articles, case reports, case series, technical notes, review articles, and book chapters addressing single, double, triple, and quadruple SSSC disruptions. Evidence was synthesized according to clinically relevant domains, including mechanism of injury, number of disrupted sites, radiographic and computed tomography (CT) findings, instability markers, operative versus nonoperative indications, fixation principles, and reported outcomes. Institutional cases were included as illustrative examples of the proposed framework rather than as a comparative outcome cohort. Results: Single SSSC disruptions generally preserve ring stability and are commonly suitable for nonoperative management, unless substantial displacement, intra-articular extension, glenoid or scapular neck involvement, or mechanical compromise is present. Double disruptions require careful assessment of ring instability; fixation of one or more dominant unstable components should be considered when there is significant displacement, reduced glenopolar alignment, medial or lateral translation, angulation, persistent acromioclavicular/coracoclavicular instability, or functional instability. Triple and quadruple disruptions are rare and traditionally associated with high-energy trauma and concomitant injuries; however, complex disruption patterns may also occur after low-energy trauma in elderly or osteoporotic patients. CT, particularly with multiplanar and 3-dimensional reconstruction, is central for defining bony injury patterns, instability markers, and surgical planning, whereas magnetic resonance imaging has a selective role in suspected ligamentous injury, occult fracture, or associated soft tissue pathology. Conclusion: SSSC disruptions should be approached as ring injuries rather than as isolated fractures or ligamentous lesions. The practical contribution of this review is a structured diagnostic and treatment algorithm that integrates disruption number, radiographic and CT-based instability markers, selective magnetic resonance imaging, patient physiology, bone quality, functional demand, and selective restoration of stability. This framework may help clinicians avoid missed instability, delayed diagnosis, and undertreatment of complex shoulder girdle injuries.