Why does gout target the foot? The pathogenesis of podagra
2011
Why Gout Affects the Foot
publication
Author Information
Author(s): Roddy Edward
Primary Institution: Arthritis Research UK Primary Care Centre, Keele University
Hypothesis
What mechanisms explain the tendency of gout to target the foot, particularly the first metatarsophalangeal joint?
Conclusion
The reasons why gout predominantly affects the foot, especially the first metatarsophalangeal joint, are not fully understood and likely involve multiple factors.
Supporting Evidence
- Gout is the most common inflammatory arthritis and often affects the first metatarsophalangeal joint.
- Hyperuricaemia is necessary for gout development, with MSU crystals forming when urate levels exceed saturation.
- Cooler temperatures in the extremities may contribute to gout's preference for the foot.
- Minor trauma can trigger gout attacks, suggesting a link between physical activity and crystal formation.
- MSU crystals may deposit more readily in osteoarthritic joints, which are also commonly affected by gout.
Takeaway
Gout likes to attack the foot, especially the big toe, but scientists aren't completely sure why. It might have to do with how crystals form in joints that are already damaged.
Digital Object Identifier (DOI)
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