Annual Foot Examination for People with Diabetes

Every person who has diabetes, should have an annual foot examination. Feet, along with kidneys and eyes, form the “terrible triad” as it is sometimes called in medical circles; because people with diabetes can develop peripheral arterial disease or peripheral neuropathy(feet); nephropathy(kidneys) and retinopathy(eyes). I have spent the past two days conducting the Annual Foot Examination for people who attend the Potchefstroom Centre for Diabetes (CDE).

How many people with diabetes undergo this annual examination? Who knows? What is certain is that CDE members have to comply with rules which gives them access to all the basic health care professionals they need. (CDE is a Managed Health Care network of over 250 medical practices contracted to certain medical aid schemes).

The benefit of this annual examination is that patients, families and health carers know if the feet are at risk of developing futher complications associated with diabetes. The examination involves checking vascular, neurological, dermatological and orthopaedic status. Footwear is also checked and commented on. The International Consensus for managing the diabetic foot states that early identification of vascular insufficiency and referral to the vascular specialist does save many limbs.

Worldwide of course there is evidence that smoking damages your health, but even in the group at Potchefstroom there were smokers.  All of whom had diminished circulation, plus the typical signs of cool feet, absent hair, discoloured pink/blue feet – especially when hanging over the side of the examination couch – and a cough.

Checking the state of sensation is vital for good diabetic foot health. The loss of sensation – neuropathy – is often an insidious process, not being fully appreciated by the patient until they are aware of “funny feelings” in their feet. Patients describe sensations of “pins and needles,” “shooting pains,” “ants running over my feet,” “I thought my sock was folded over under my foot, but it wasn’t,” “it feels like I’m walking on cotton wool” and many others. This could be the first step to damaging the foot and developing an ulcer.

People with diabetes get all the conditions that affect the rest of us. However, if not identified and managed properly an area of callus(which indicates increased local pressure) can easily develop into an ulcer. Various nail conditions are common amongst people with diabetes, especially fungal infections and they are difficult to get rid of.

They structure of any foot affects its function and so in the diabetic foot assessment we look at the alterations in shape that could cause load increases and potential blister or ulcer sites. In addition disorders such as gout are very often associated with diabetes.

Footwear is responsible for at least 50% of foot ulcers, so this is examined very carefully. Unfortunately, many people do not have suitable footwear, so it’s important to check it  and give good advice.

Diabetes is a life-threatenting disease, but modern medicine has moved to early diagnosis and treatment and an important part of this is recognition by podiatrists of the signs in the feet. However for the person with diabetes one of the simplest acts to ensuring long life is to have your feet examined annually and know your foot status or risk.

Sweaty Feet

Sweaty feet affect everybody at some time of their lives. The complaint can be seasonal -worse in the warmer months – but can be present at any time of year. The medical term is hyperhidrosis (excessive sweat production) and if there is an accompanying bad odour, it is called bromidrosis.

There are many causes. The most common is poor foot hygiene associated with footwear with a high synthetic material content. Socks, stockings or tights made of nylon also cause the feet to sweat excessively. In teenage years glandular changes are a frequent cause amongst males and is made worse by poor hygiene and footwear. Occasionally, there is a systemic problem which shows in increased sweating of the hands and other body parts. Whenever we exercise, we develop sweaty feet, which is is quite normal, but it does lead to the smelly foot and shoe syndrome.

An excessively sweaty foot is susceptable to the development of fungal infections and because it is important to differentiate between sweating and fungal infections, I’ll write in detail about fungal infections in the future.

Treating sweaty feet needs patience and perserverence. Daily washing with soap and water is essential. Then dry feet thoroughly. Try to avoid wearing shoes with synthetic uppers and soles. Make sure your socks contain high percentages of cotton or wool. Read the labels to see what the socks are made of. Try using an anti-perspirant under the arches of your feet. There are some products advertised specifically for this application. Podiatrists usually recommend ‘Spiritus Pedibus’ also called Foot Spirit. It contains 3% Salicylic Acid in Ethyl Alcohol. Occasionally a weak solution of Formalin can be prescribed. Obviously any opportunity to have your feet bare in fresh air will help. So wear sandals whenever possible. However, beware of plastic and synthetics, go for leather if you can. If the condition is really severe, a change of socks may be necessary during the day.

There is a surgical procedure called a sympathetomy – which must be performed by a specialist surgeon – for very severe sweating of the hands and feet.

Smelly feet are usually caused by the bacteria which live on our feet normally, not being washed off thoroughly. They can of course be caused by the materials themselves, especially some rubbers. Washing and drying is a good start followed by any of the above treatments. Naturally if you favourite trainers make your feet smell, but your normal shoes don’t, you have a hard choice to make!

Powder is often used for sweaty feet, but be careful since it tends to solidify between the toes.

Sweaty feet are a common complaint and they can be embarassing. However, treatment is often very simple, starting with an intensive foot hygiene routine.

Podiatry and the Child with Arthritis

In podiatry, for the child with arthritis, we find that foot problems are not necessarily caused by the arthritis alone. Before the disease is correctly diagnosed, swelling, pain and lack of mobility are the main signs and symptoms. This usually affects the hands, knees, feet and ankles. Malfunctions of the foot, ankle and leg as a result of painful joints usually respond to medication. However, many structural problems [what podiatrists call biomechanical anomalies] remain, because they were present before the arthritis developed.

I have found that podiatric intervention is necessary and effective during the painful stages at the start of medication and after the disease has gone into remission following medication. The intention is to balance or control foot function, thereby reducing the load on the painful foot joints. This counteracts the effects of these underlying anomalies and aims to protect the feet from long-term damage.

Even children without foot pain but with significant biomechanical anomalies are prescribed foot orthotics. This is at present only an opinion, but we are recording all interventions at our clinic in an attempt to collect some meaningful data.

However, often the initial treatment involves making sure that the footwear is a correct fit. Many children that I see choose to wear soft slippers because their feet are painful and school shoes hurt. Slippers make matters worse as they give neither support or protection to the feet. Fortunately we can request that these children be allowed to wear trainers and so far teachers have been co-operative. For the really poor patients we actually buy an appropriate trainer.

The use of foot orthotics always stimulates debate. There is published research to show the benefits of prescription foot orthotics for adults with rheumatoid arthritis, but to date evidence for children is scarce. By using foot orthotics for all children with biomechanical anomalies with or without pain, we hope to prevent them from developing serious foot function problems as adults.

In some cases, we start by using a very basic treatment of figure 8 crepe bandage to support painful ankle joints. This can be easily taught to family members and starts to get the family involved in treatment – especially when they experience a reduction in pain and improved foot function.

I read in the June 2008 edition of PodiatryNow (the monthly Journal of the Society of Chiropodists and Podiatrists, in the UK), that “a 3-year trial is to commence aimed at reducing pain, stiffness and deformity in the feet of up to 60 children and young people.” The study is a cooperation between academic podiatrists from Glasgow Caledonian University, the Royal Hospital for Sick Children in Yorkhill and the Centre for Rheumatic Diseases at the University of Glasgow.

They have been awarded nearly 90,000 British Pounds, about 1.3 million SA Rands. Is there anybody reading this who would like to fund similar research at our clinic at Chris Hani Baragwanath Hospital in Soweto? (Subject to all the necessary protocols)!!

This type of research will enable us to be much more accurate in our interventions for foot problems in the child with arthritis.

Diabetic Foot Congress: Johannesburg 2008

Tomorrow morning sees the start of the first Diabetic Foot Working Group (DFWG) Congress in Johannesburg. In South Africa it is also a long weekend – meaning that Monday June 16 is a National Holiday, when we remember the youth of SA and their part in the struggle against apartheid. Especially the riots which broke out on June 16 1976.

For those of us dedicated to another great cause, we will spend the next 3 days learning, sharing and discussing the causes and effects of the diabetic foot, with a special emphasis on our local problems and solutions. We have speakers from Cameroon, the UK and USA, in addition to a variety of local speakers. The benefit of this type of congress is that you get to meet the members of the wider multidisciplinary team and the exchange of ideas and information will help to increase the core of health professionals available to manage the feet of people with diabetes in South Africa.

Recently I have been requested to try to assist with the development of training in foot health in Nigeria and have a new contact with an orthopaedic surgeon in Iraq. There are no podiatrists in Nigeria at all, where the population is more than 140 million. Furthermore there is no government support for foot care either.

I am very pleased to report that the lady featured in the ‘bean bag’ blogs, is making fantastic progress, thanks to the skill of my associate Tshidi Tsubane. We are also very proud of the fact we have had a paper published in a new journal – Wound Healing Southern Africa – Volume 1 No 1. visit www.woundhealingsa.co.za

Currently we are working onpapers concerning nail surgery for people with diabetes and the costs of ulcer care from a podiatrist.

Finally for Friday 13th! I spent the day as an examiner for the podiatry students at the University of Johannesburg. I’m not sure who was more tired the students or me. At the end of two sessions of assessing competency in clinical skills you actually feel quite sorry for them.

Have a great weekend.