Rheumatology and Arthritis
Summary
Rheumatology encompasses a spectrum of disorders characterised by inflammation, degeneration or dysregulation of musculoskeletal and connective tissues. Arthritis, the hallmark of many rheumatic diseases, involves joint pain, stiffness and impaired function. Osteoarthritis arises from mechanical overload and imbalanced cartilage remodelling, leading to cartilage erosion, bony hypertrophy (osteophytes) and subchondral bone changes. Inflammatory arthritides—such as rheumatoid arthritis, spondyloarthropathies and psoriatic arthritis—are driven by synovial inflammation (synovitis), autoantibody production and cytokine-mediated tissue injury, resulting in progressive joint destruction. Crystal arthropathies like gout and calcium pyrophosphate deposition provoke episodic inflammation through crystal-induced inflammasome activation. Beyond joints, systemic features may include vasculitis, serositis and organ involvement, underscoring the need for a multidisciplinary approach. Advances in imaging, biomarker profiling and targeted therapies have transformed patient outcomes, emphasising early intervention and personalised management to preserve joint integrity and quality of life.
Research from Nature Portfolio
Recent population‐based analysis of chronic low back pain demonstrated that persistent symptoms lasting over three months are associated with marked impairments in physical function, increased depressive symptoms and reduced health-related quality of life. Despite high health-care utilisation, gaps in multidisciplinary pain management persist, highlighting the need for earlier identification and integrated rehabilitation strategies.
Investigation of hip arthroplasty patients revealed that those with osteoarthritic hips exhibit greater sacroiliac joint sclerosis, irregularities and pelvic obliquity than patients with osteonecrosis. Coexisting spinal deformities further elevate sacroiliac degeneration, supporting a hip–sacroiliac–spine syndrome concept and the importance of holistic preoperative evaluation of the lumbopelvic complex.
Mechanosensitive ion channel Piezo2 has been identified as a key mediator of mechanical pain in experimental osteoarthritis. Conditional deletion of Piezo2 in nociceptors markedly reduced mechanical sensitisation in models of joint inflammation and osteoarthritis, revealing a novel non-opioid target for pain control and clarifying how nerve growth factor signals interact with mechanical transduction pathways.
Rheumatology and Arthritis publication trend
The graph below shows the total number of articles in rheumatology and arthritis across all publications each year (not limited to Nature Index journals).
Technical terms
Synovitis: Inflammation of the synovial membrane lining a joint, leading to pain and swelling.
Osteophyte: Bony outgrowth at joint margins formed in response to cartilage loss and mechanical stress.
Chondrocyte: Specialized cell responsible for synthesising and maintaining cartilage extracellular matrix.
Nociceptor: Sensory nerve ending that detects noxious stimuli and mediates pain transmission.
Piezo2: Mechanosensitive ion channel in sensory neurons that transduces mechanical stimuli into electrical signals.
C–C chemokine: Small signalling proteins that direct migration of immune cells to sites of inflammation.
Dactylitis: Diffuse inflammation of an entire digit causing uniform “sausage-shaped” swelling.
Biologic DMARD: Targeted therapy (e.g. monoclonal antibody or receptor fusion protein) that modulates specific immune pathways in inflammatory arthritis.
References
- Chronic low back pain and its impact on physical function, mental health, and health-related quality of life: a cross-sectional study in Singapore. Scientific Reports (2022).
- Hip-sacroiliac joint-spine syndrome in total hip arthroplasty patients. Scientific Reports (2024).
- Piezo2 expressing nociceptors mediate mechanical sensitization in experimental osteoarthritis. Nature Communications (2023).
- Dietary supplementation of vitamin B1 prevents the pathogenesis of osteoarthritis. Proceedings of the National Academy of Sciences of the United States of America (2024).
- CC chemokines and receptors in osteoarthritis: new insights and potential targets. Arthritis Research & Therapy (2023).
About these summaries
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