Diabetics who smoke cigarettes beware

Smoking releases a molecule known as norepinephrine, which triggers blood vessels to constrict, or narrow. When the already small vessels in the foot constrict, oxygen and the cells that fight infection and aid in healing are unable to reach tissues. Each cigarette smoked has been shown to cause oxygen levels to fall and remain low for 30 to 50 minutes. This is of great concern in those with a foot wound or incision after surgery, in which blood flow and oxygen are vital to skin healing.    

Each cigarette contains more than 4,000 natural and synthetic chemicals. Some of these chemicals include carbon monoxide, methanol (which is found in rocket fuel), ammonia, and nicotine.  Nicotine has been shown to decrease the molecules that are responsible for growth of new blood vessels and development of osteoblasts, or bone building cells. Carbon monoxide further contributes to the decrease in tissue oxygen caused by vessel constriction, by taking oxygen away from the molecule it is normally transported in in the blood. It is for these reasons that quitting smoking is imperative for individuals with foot problems. Studies have shown that there is a 2.7 times higher risk of bone not healing in smokers compared to non-smokers undergoing foot surgery.  

Prior to foot surgery involving bone, smoking should be stopped at least 6 weeks prior to the procedure if possible and then take that opportunity to stop smoking indefinitely. 

In individuals with diabetes or other disorders affecting their blood vessels, smoking is even more dangerous.  Pressure ulcers develop when sensation is diminished and the normal feeling of pain associated with a wound is not present. Tissue healing is impaired and there is a heightened risk of infection developing. Combined with smoking, such risks are furthered increased. Individuals with diabetes who notice a foot wound, whether they are smokers or not, should contact their podiatrist immediately. Early treatment can prevent infection and worsening of the wound that can potentially lead to a need for amputation.  Bill’s story in the smoking ad is a scary one, but by sharing it he may be able to prevent others from suffering a similar fate of amputation. 

The Lover's Fracture

The calcaneus bone, or heel bone, is among the most commonly fractured tarsal bone in the foot.  Calcaneus fractures account for 1-2% of fractures in the body.  

Calcaneus fractures are also known as the Lover’s fracture.  

Calcaneal fractures often occur due to a jump from a height, which is how the term “Lover’s fracture” was coined because a lover may jump from great heights to escape from a lover’s spouse or boyfriend.

Calcaneal fractures are generally traumatic fractures occurring from motor vehicle accidents, muscular stress, or falls from a height.  We usually see these injuries in worker's injury claim cases, whereby someone has fallen off of a ladder or rooftop. 

Calcaneal fractures are categorized based on whether the fracture is displaced (greater than 2mm displacement), open (with soft tissue or bony structure exposed), closed (with skin and soft tissue intact), or comminuted (3 or more pieces).  Treatment for calcaneal fractures varies based on the type of fracture.  Standard radiographs and CT scan are used to diagnose calcaneal fractures, and determine the severity of the injury.  Pain over the heel, inability to walk, or a hematoma that extends to the sole of the foot are all signs of a calcaneal fracture.  

Presence of a hematoma on the sole is known as the “Mondor Sign”.  In a non-displaced fracture nonsurgical treatment may be sufficient.  Displaced or comminuted fractures typically require surgical treatment consisting of some type of fixation with metal plates or screws or more recently we have used multiplanar external fixation for restoration of height, the angle, and joint space of the posterior facet in the subtalar joint. 

In closed fractures surgical treatment is often postponed until swelling has subsided.  In open (exposed soft tissue or bone) or avulsion fractures (when a tendon pulls off a piece of bone), more urgent treatment is required.  Open fractures are exposed to the environment and need to be cleaned and then surgically corrected within a short time period to prevent infection which is another advantage of external fixation. 

 

Minor calcaneal fractures usually heal within a few months, and cause minimal long-term limitations.  More severe fractures may take years to heal, and never return to the previous condition.  

Long-term complications may include pain, limb length discrepancies, and changes in gait with chronic swelling, and reduced endurance and strength.  

Early treatment by the foot and ankle surgeon (ie Family Foot and Leg Center)  is the key to minimizing long-term complications. 

-Dr Timm

4 Tips to Reduce Diabetes Risk

Diabetes Mellitus affects more than 230 million people worldwide!  

That is equivalent to approximately 10 times the number of people living in the state of Florida alone.  

One out of every three people with diabetes is unaware they have the disease.  

There are three types of diabetes: type 1 diabetes, type 2 diabetes, and gestational diabetes.  The number of Americans with diabetes is expected to double or triple by the year 2050.  While these statistics are grim, there are many things that can be done to prevent type 2 diabetes. 

Here are some simple lifestyle changes that can prevent diabetes:

• Stay at a healthy weight.  Type 2 diabetes and obesity are closely linked, and maintaining a healthy weight can really make a difference!  The goal is to maintain a BMI less than 25.
• Eating well is also important in prevention.  Surprisingly, studies have shown that women that consume processed red meat are at increased risk of developing type 2 diabetes.  Eating less meat may be preventative as well as avoiding foods high in saturated fats, cholesterol, and sugar.  Eating whole grains, nuts and citrus fruits have also shown to be preventative.  Having a diet high in fiber can also help control blood sugar, thus lowering the risk of developing diabetes.  Stay away from fad diets, and make it a goal to simply make healthier choices.
• Ditch the soda for coffee!  Drinking soda can increase your diabetes risk by 26%, but drinking more than 1 cup of coffee a day can be preventative. 
• Be active.  Walking for just a few minutes about half an hour after dinner has shown to be helpful by lowering blood sugar levels.  Weight lifting can also lower blood sugar better than aerobic exercise can, while maintaining muscle mass and speeding metabolism.  However, a good mix of aerobic exercise and weight training is ideal for maximum benefit.

These are just a few tips for a healthier lifestyle that may aid in the prevention of developing type 2 diabetes.  Type 2 diabetes has some genetic components, but developing the disease is greatly affected by lifestyle.  It is never too late to start living a healthier lifestyle, and if you are at increased risk of developing diabetes it is important to talk to your doctor and get screened for diabetes.

-Dr Timm

CROW Brace to treat severe deformity in high risk patients.

CROW - Charcot Restraint Orthotic Walker

What is a CROW Brace?

​​

The Charcot Restraint Orthotic Walker, or CROW, is a stable boot designed to accommodate and support a foot with Charcot neuroarthropathy. The CROW consists of a fully enclosed ankle/foot orthotic with a rocker-bottom sole.  It is a common treatment used after the acute charcot foot has calmed down.

 

What is Charcot deformity?

This occurs when bones and joints in the foot fracture, break up or pop out of place with minimal or no known direct injury. In the United States, this deformity is most commonly seen in people with diabetes. The foot first enters an acute stage of swelling, warmth and redness, which eventually diminish. Broken bones and dislocations can occur, causing severe deformities of the foot and ankle. Some patients develop pain or ulcers when the affected foot becomes deformed. CN can affect the other foot or happen again in the same foot. The foot does not regain its normal shape. 

What is a CROW made of?

The boot is custom made for each patient’s foot. The outer shell consists of two plastic or fiberglass clamshell pieces that fit and are strapped together with Velcro. It is sturdy and can prevent other bones from cracking or breaking and can be walked on. The bottom of the boot has a rounded rocker-bottom shape. The boot contains a custom, removable foam insole. Each insole is adjusted to distribute weight equally and also to support the ankle joint.

 

What does the boot do?

The CROW functions by providing even support to the entire foot, especially to areas that are overstressed due to the neuroarthropathy. These deformities often cause the foot to bend out of shape. The resulting stress on the foot can cause ulcers, which can develop into severe infections if left untreated. By distributing pressure equally throughout the leg and foot, the CROW removes excessive forces and gives the foot time to heal. It is easier to use than a cast, can be removed for wound care and washing, and is more durable.

 

Which patients can use the CROW?

Patients with acute Charcot can begin using the CROW after the swelling has receded. This can take months.  Patients with mild to moderate deformities will benefit most from the CROW. Patients with severe  deformities or extreme foot/ankle instability may need surgery instead of using the CROW.

 

How does it affect daily life?

Fortunately, the CROW is adaptable to daily life. Because of the clamshell design, the patient can easily remove the boot in order to keep the foot clean and sleep better. In addition, its fitted shape and good support allow people to return to walking, standing and driving more normally.

 

What are typical outcomes?

The most important outcome is that patients are able to continue to bear weight while minimizing pressure and giving the foot a chance to heal. Healing may require many months. However, the disease process may return and/or affect the other foot, so regular and lifelong monitoring of the condition is necessary.

 

What are the possible complications?

Despite the sturdiness of the boot and the distribution of forces, the bones of the foot could still break. The foot could develop open sores, though the boot is designed to prevent it. As always with Charcot deformity, some joints may heal incorrectly or not at all. Unfortunately, other factors such as poor glucose control and bad nutrition can prevent healing despite use of a CROW.

 

Frequently Asked Questions

What options do I have when my foot is still swollen?Patients often wear special casts until their feet stop swelling enough for them to use a CROW. The cast serves to stabilize the foot and prevent unstable motion, similar to the CROW. However, unlike the CROW, these casts cannot be removed.

Limb Preservation: Total Contact Casting

Diabetics with neuropathic ulcers affect at least one quarter of all diabetics in the United States, and according to Wounds Research, approximately 1 in 5 of these individuals will eventually require an amputation of their foot. Total contact casting has recently become more popular as an option for foot protection, and to mediate the excessive wear and tear that some diabetic foot sores suffer.

What is total contact casting?

As the name suggests, this technique, which is used by many diabetic foot specialists, is a thin cast that is applied to the entire plantar surface area of the foot, as well as the lower leg. Based on its design, the cast can take up as much at 92 percent of the pressure from the ulcer site. Since ulcers often occur on parts of the foot or leg that are repeatedly impacted through daily movement, it is important that they receive as much padding as possible without affecting an individual’s normal walking patterns. Although total contact casting provides relief from certain pressures, the cast works with the natural human gait to make sure that no section of the foot or leg is required to take on excessive weight or pressure.

Does it always work?

Total contact casting has been shown to be effective in the healing of foot and lower leg ulcers, but only those that are noninfected. According to current research, the success rate is between 72 and 100 percent in most patients. A study conducted at the University Hospital Maastricht in the Netherlands examined how total contact casts would fare on infected patients, and of the 28 patients in the study group, only 36 percent showed signs of healing. The study group recommended that individuals with infected diabetic ulcers look toward alternative treatments for healing, according to the American Diabetes Association.

Surgery may become necessary in conjunction with acute infections.

Overview of the Charcot disease

What is it?

Charcot arthropathy, also known as Charcot foot and ankle, is a syndrome in patients who have neuropathy or loss of sensation. It includes fractures and dislocations of bones and joints that occur with minimal or no known trauma.​

Symptoms and Clinical Presentation

​Initially, there may be swelling, redness and increased warmth of the foot and ankle. Later, when fractures and dislocations occur, there may be severe deformities of the foot and ankle, including collapse of the midfoot arch (often called rocker bottom foot) or instability of the ankle and hindfoot. The syndrome progresses through three general stages:

•Stage 1 (acute, development-fragmentation): marked redness, swelling, warmth; early radiographs show soft tissue swelling, and bony fragmentation and joint dislocation may be noted several weeks after onset
•Stage 2 (subacute, coalescence): decreased redness, swelling and warmth; radiographs show early bony healing
•Stage 3 (chronic, reconstruction-consolidation): redness, swelling, warmth resolved; bony healing or nonunion and residual deformity are frequently present.

Cause (including risk factors) 

Charcot foot occurs in patients with peripheral neuropathy resulting from diverse conditions including diabetes mellitus, leprosy, syphilis, poliomyelitis, chronic alcoholism or syringomyelia. Repetitive microtrauma that exceeds the rate of healing may cause fractures and dislocations. Changes in circulation may cause resorption of bone, weakening the bone and increasing susceptibility to fracture and dislocation. 

Anatomy 

Charcot arthropathy may affect any part of the foot and ankle, including (in decreasing order of frequency) the midfoot, hindfoot, ankle, heel and forefoot.  Multiple regions may be involved concurrently.  Fractures and dislocations frequently involve several bones and joints, with extensive fragmentation and deformity. 

Diagnosis 

Time between onset of symptoms and diagnosis may be several weeks or months. Delay in diagnosis may or may not affect the end result because gross instability may occur even if prompt diagnosis is made. Diagnosis is based on a high index of suspicion for this problem in patients with neuropathy. Increased redness, swelling and warmth may be the only early signs. Some patients have pain. Early radiographs may show soft tissue swelling with no bony changes, but repeat radiographs several weeks later may show bone and joint changes.

Treatment Options 

Non-Surgical: Non-operative treatment includes a protective splint, walking brace, orthosis or cast. Early weightbearing is allowed in stage 1 by 41 percent of specialists and in stage 2 by 49 percent of specialists, and other specialists recommend non-weightbearing. After stable healing is noted in stage 3, treatment includes accommodative footwear with protective orthoses.Surgical: Selected patients with instability in the early stages may be treated with open reduction and internal fixation and fusion. In the later stages, surgical options may include realignment osteotomy and fusion (correction of deformity) or ostectomy (removal of bony prominence that could cause an ulcer ). 

* Sometimes the surgery can fail, and this is commonly because of improper or inadequate fixation, poor glucose management, obesity, noncompliance, and even infection. 

Charcot and you.

Many diabetic patients may have heard warnings to look out for “charcot foot” but they may not know exactly what this means.  Different from diabetic charcot foot is an inherited disease with another characteristic foot type called Charcot-Marie-Tooth disease.  As a part of September’s Charcot-Marie-Tooth (CMT) disease awareness month, it is critical for patients to understand the differences between these two neurological disorders. 

CMT

Charcot-Marie-Tooth disease is caused by a gene defect that is often inherited.  If CMT is seen in other family members, parents should be on the lookout for the development of slowly progressing muscle weakness in the lower extremities before age 20.  Individuals with CMT have nerves that lose their myelin covering, which normally allows signals to be sent to and from skin and muscles at a normal speed allowing sensation and muscle contraction.  Patients will not usually complain of any numbness because their sensation was likely never completely normal.  As a result of the weakness and loss of sensation, first in the legs then typically seen in the upper extremities, kids with CMT may seem clumsy and have difficulty walking without tripping or rolling their ankles. The feet will often have a high arch appearance and may be prone to ulcers from damage caused by lack of ability to sense pain. 

Diabetic Charcot Foot

Patients with diabetes need to be concerned about charcot arthropathy when they develop areas of the foot where they can no longer feel anything.  The combination of lack of sensation allowing damage to the foot that patient cannot feel and an increased blood flow supplying mediators of the inflammatory process allows a “charcot joint” to develop.  In the charcot joint, the repeated small injuries occurring cause bones to gradually fracture and dislocate.   This causes deformity (often an extreme flat foot) which typically places the diabetic patient’s foot at a greatly increased risk of developing ulcers and subsequent infection with severe consequences.  The most common signs of the development of charcot arthropathy are swelling and increased temperature of the affected area of the foot, redness, pain and the feeling of a “loose bag of bones” when the joint is moved. 

In both diabetes with loss of sensation, and Charcot-Marie-Tooth, foot self-exams are immeasurably important in preventing ulceration and further complications.  Protective shoe gear and custom made orthotics can provide additional protective measures for the foot.  As shown by these two disease processes, loss of sensation in the foot is a major problem that should always be evaluated by your foot and ankle specialists here in Naples Florida.