Gout and the Foot
Gout is an extremely painful joint disease that affects about 3% of the population, mostly males. It is characterised by sudden attacks of joint inflammation (arthritis) caused by deposition of uric acid crystals in the joints. Though any joint in the body can be involved, the big toe joint is usually the first location and is affected in almost 75% of cases.
What causes gout?
Gout is related to an increased level of uric acid in the blood (hyperuricemia). Uric acid is a byproduct of purine digestion. Purines are nitrogen-based compounds, which form part of our genes and those of plants and animals. For this reason, purines are found in many foods; meat, especially liver and kidney, seafood and dried beans are rich in purines. Uric acid produced by the breakdown of purines enters the blood. When the kidneys filter the blood, they take out this uric acid and excrete it into the urine. However, if the body increases its production of uric acid or if the kidneys fail to properly eliminate the uric acid from the blood, its level in the blood increases. The uric acid crystals eventually precipitate in the joints causing gout.
It should be noted that not every person with raised uric acid levels develops gout, and in about half of gout cases the uric acid level in the blood is normal.
- Genetics; about 18% of patients have a family history of the disease
- Gender; males are mostly affected, only 5% of cases are seen in females (mostly after menopause)
- Age; more common in adults
- Increased intake of purine-rich foods
- Obesity; increased amount of body tissue available for breakdown -> increased uric acid production
- Increased alcohol intake; alcohol interferes with uric acid elimination from the body
- Diuretics or water pills that are used to treat high blood pressure can also precipitate gout.
Gout of the foot:
Gout mostly affects the joints of foot, especially the big toe joint.
The attack usually starts at night and is so painful that it wakes up the patient. The reason for the attack occurring during sleep or affecting mostly the foot is that the body temperature decreases while one is asleep. As feet are elevated, blood flow decreases and this, in turn, decreases the temperature further. The decreased temperature facilitates the precipitation of crystals in the joint, which then trigger the inflammatory reaction.
Within 24 hours, the joint swells up, becomes hot and tender; the skin over the joint may also appear shiny and red and the pain spreads to the whole foot. Movement at the joint becomes restricted, this makes walking difficult and shoe size has to be adjusted accordingly. There may also be fever and malaise.
The disease progresses in four stages:
- Acute Attack of Gout:
- Interval period:
- Chronic Gout:
In an acute attack:
- Take high dose non-steroidal anti-inflammatory drugs (NSAIDs) e.g. naproxen or indomethacin
- Steroids, usually prednisone; can be taken orally or injected at the joint
- If both these drugs fail, colchicine is the drug of choice, which acts by preventing the deposition of uric acid crystals in the joints. It is also diagnostic of the disease because gout pain responds immediately to colchicine treatment.
To prevent future attacks, low dose NSAIDs or colchicine is prescribed for daily use.
High-risk individuals should avoid purine-rich foods, alcohol and maintain their weight. Taking vitamin C and other antioxidants, as well as consuming lots of cherries help to prevent gout attacks.
Gout can be made more comfortable by wearing a soft supportive orthotic. This supports and cushions the foot and places less strain on the joints of the foot. This results in less damage to the joints from the uric acid crystals.
Orthotics that are suitable to be used for gout attacks are below.
THE KEY STEPS TO GETTING THE RIGHT SIZE DOCPODS:
FULL LENGTH INSOLES
NON FULL LENGTH INSOLES
|1. Measure your existing shoe insole:
|| 1. Measure from your heel to ball of foot:
2. Then compare your measurements from above to match the product size charts below:
|US MENS||4.5 - 9||9 - 13|
|US WOMENS||6 - 10||10 - 14|