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Hypertrophic osteoarthropathy
1Rheumatology Department, Instituto Nacional de Cardiologia, Mexico D. F., Mexico.
Insights
Hypertrophic osteoarthropathy involves bone changes linked to conditions like cyanotic heart disease and POEMS syndrome. Understanding its mechanisms may illuminate related disease pathways.
Area of Science:
- Rheumatology
- Endocrinology
- Cardiology
Background:
- Hypertrophic osteoarthropathy (HO) is a condition characterized by bone and periosteal changes.
- HO is associated with various underlying conditions, including cyanotic heart disease and POEMS syndrome.
- The pathogenesis of HO involves complex interactions between endothelial cells, platelets, and growth factors.
Purpose of the Study:
- To discuss current advances in the study of hypertrophic osteoarthropathy.
- To provide an updated classification of HO, incorporating POEMS syndrome.
- To explore the pathogenesis and associated conditions of HO.
Main Methods:
- Review of current literature on hypertrophic osteoarthropathy.
- Updated classification of HO, including associated diseases like POEMS syndrome.
- Discussion of proposed pathogenetic mechanisms involving endothelial cells and fibroblast growth factors.
Main Results:
- Cyanotic heart disease is identified as the most closely linked internal illness to HO.
- POEMS (polyneuropathy, organomegaly, endocrinopathy, M protein, and skin changes) syndrome is now included in HO classification.
- Bony alterations in HO leave diagnostic marks detectable long after death.
- Localized endothelial cell activation by abnormal platelets is implicated in acropachy pathogenesis.
- Antiphospholipid syndrome may be present in cardiogenic HO.
Conclusions:
- Understanding HO pathogenesis may offer insights into associated diseases.
- HO classification and understanding continue to evolve with new research.
- The study highlights the significant link between HO and specific systemic conditions.
Abstract:
Current advances in the study of hypertrophic osteoarthropathy are discussed. An update of the classification of hypertrophic osteoarthropathy is given in which the POEMS (polyneuropathy, organomegaly, endocrinopathy, M protein, and skin changes) syndrome is included among the associated diseases. Cyanotic heart disease is the internal illness most closely linked to hypertrophic osteoarthropathy. The bony alterations at the distal phalanxes and on the periosteum of the tubular bones leave a characteristic and indelible mark that can be diagnosed centuries after the death of the individual. Current thinking suggests that localized activation of endothelial cells by an abnormal platelet population, with the ensuing release of fibroblast growth factors, plays a central role in the pathogenesis of the acropachy. Antiphospholipid syndrome may be a feature of cardiogenic hypertrophic osteoarthropathy. Unraveling the mechanisms of hypertrophic osteoarthropathy may help in understanding the pathogenesis of the associated diseases.