Abstract
Knee osteoarthritis (KOA) and cerebral small vessel disease (CSVD) are two prevalent and debilitating conditions that have traditionally been studied within distinct medical disciplines - rheumatology and neurology, respectively. However, emerging evidence suggests a deeper connection between these seemingly disparate diseases, transcending conventional boundaries and prompting a paradigm shift in our understanding of their pathophysiology and clinical implications. This narrative review explores the multifaceted crosstalk between KOA and CSVD, delving into shared risk factors, inflammatory cascades, and vascular mechanisms underpinning their co-occurrence. Beyond conventional etiological factors, we illuminate the role of systemic inflammation, aberrant biomechanics, and neuro-gliovascular interactions in shaping the complex interplay between KOA and CSVD. Furthermore, we scrutinize the bidirectional impact of these conditions on cognitive function, emphasizing the shared burden of neurocognitive impairment in affected individuals. Through a synthesis of cutting-edge research and theoretical frameworks, we propose a novel conceptual model that integrates musculoskeletal and cerebrovascular pathways, shedding light on previously unexplored avenues for therapeutic intervention and personalized management strategies. This comprehensive analysis not only advances our understanding of the interconnected nature of KOA and CSVD but also underscores the imperative for interdisciplinary collaboration and holistic approaches to patient care in the era of precision medicine.