Foot and Ankle Doctor Blog Space

Emergent Gas Gangrene

Gas gangrene is an emergent case where a bacterium, most commonly Clostridium perfringens grows inside the body and produces harmful toxins and gas causing tissue death. It can be caused by other bacteria such as Group A streptococcus, Staphylococcus aureus and Vibro vulnificus.

Gas gangrene most often occurs at a wound site, recent surgical site or trauma site. It can develop suddenly and rapidly accelerate causing irreversible tissue damage.

Symptoms of Gas Gangrene

 Change in color of the skin to a pale to brownish-red color


 Crepitus– gas can be felt as a cracking sensation when pressing on the swollen area


 Brown fluid filled blisters


 Fever


 Sweating

If not treated immediately a person can go into shock which will lead to kidney failure and eventually lead to death.


Gas Gangrene can be diagnosed by clinical examination. To confirm the presence of Clostridium bacteria a tissue culture may be taken. Blood cultures can also be used to determine a bacteria infection. X-rays can be used to identify the presence of gas in the soft tissue.


Gas gangrene is an emergent case and surgical intervention is required. Surgical debridement of the damaged and infected tissue must be removed. In severe cases partial amputation may be required to prevent further spread of the infection. IV antibiotics will be prescribed. In some cases hyperbaric oxygen (HBO) treatment may be implemented. Clostridium bacteria cannot survive in an oxygen rich environment and therefore HBO can be used to kill the bacteria.

Dr. Farshid Nejad

Pediatric Clubfoot

Every 1 in 1,000 births a child is born with a clubfoot, which can be devastating to parents. Pediatric clubfoot is curable and if the deformity is corrected early, children born with clubfoot are indistinguishable from other children with normal feet.


What is Clubfoot?


Clubfoot occurs when a child’s foot is turned inwards and the heel points downwards. In 50% of cases the deformity can occur in both feet. The calf muscles of the affected side are smaller than normal. Clubfoot is a congential deformity, meaning the child is born with the condition.




 Clubfoot is most often idiopathic (no apparent cause)


 Associated with genetic syndromes and birth defects


 Result from a neuromuscular disorder




The “Ponseti” casting method is the preferred method for treating pediatric clubfoot. Treatment should begin within the first month of life for best results. The child’s foot is manipulated into the correct position through a serious of casting. 6-8 leg casts are applied every 5-7 days to slowly correct the deformity overtime. In some cases a small cut may be made to the heel cord to release contracture of the Achilles tendon. After the casting series is completed a special brace is required to be worn during naps and at night until the age of 4.


Clubfoot is visible at birth and can be detected by fetal ultrasound. If your child has been diagnosed with clubfoot come see us at Foot& Ankle Doctors, Inc for more information.


Dr. Dardashti

Neuropathic Joints

Charcot is a condition in patients who have neuropathy or loss of sensation. Charcot can lead to fractures and dislocations in the foot and ankle. As the disease progresses the joints collapse and the foot can take an abnormal shape known as a rocker-bottom foot. Diabetes is the most common cause of Charcot because diabetes is associated with poor blood flow, causing weakening of bones, and neuropathy, which is the main cause of Charcot. Other causes and risk factors include repetitive microtrauma and patients with peripheral neuropathy secondary to:

– Chronic alcoholism

– Leprosy

– Syphilis

– Poliomyelitis


There are various stages of Charcot and symptoms will vary depending on the stage of the deformity.

Stage 1: Red, hot, swollen foot/ankle.

X-rays show soft tissue edema and bony fragments

Stage 2: Decreased local edema foot/ankle

X-rays reveal coalesence of bony fragments

Stage 3: No local edema

X-rays show consolidation and remodeling of the bone


In addition to reviewing your overall health, symptoms and discussing your medical history, our physicians at Foot& Ankle Doctors, Inc may order various imaging tests for further detailed pictures of your foot or ankle.


In early stages of Charcot, x-rays may appear normal. As the disease progresses the bones may fracture or dislocate. As a result repeat x-rays may be taken several weeks later.


Ordered to evaluate soft tissue and when a bone infection is suspected

Bone Scans:

Helpful to differentiate between Charcot and infection. Charcot and an infection are positive on a technetium bone scan, however infection will only produce a hot spot on an indium bone scan and Charcot will not.

Non-Surgical Treatment

– Immobilization is important in the early stages of Charcot to protect the bones

from stress and shear forces that can further damage the bones

– Total contact cast changed every 1-2 weeks for 2-4 months

– Charcot restraint orthotic walker (CROW) boot

Custom Shoes designed to decrease the risk of ulcers

– Rocker bottom shoes will help reduce the risk of ulceration

Surgical Treatment

Depending on the type and extent of the deformity surgery may be recommended

Dr. Dardashti

Melanoma of the Foot

Melanoma is a serious skin cancer that can affect people of all ages.  Exposure to UV radiation from the sun or tanning beds can increase your risk of developing melanoma. However, melanoma can occur anywhere on the body, even on less sun-exposed areas such as the soles of your feet.

Signs and Symptoms

  • Change in an existing mole

  • Development of a new pigmentation that grows over time  – predominately brown, black or blue in color and in some cases red


To help identify characteristics of unusual moles or spots on the body use the mnemonic ABCDE:

  • Asymmetry – Melanoma is asymmetric

  • Border – Melanoma is will have an irregular border or edge that is typically ragged

  • Color – Melanoma is typically a mix or colors rather than one solid color

  • Diameter – Melanoma grows in diameter where benign moles remain the same size. A mole larger than 5mm, the size of a pencil eraser should be seen by a physician

  • Evolving over time – change in color, size, shape or symptoms (itching tenderness or bleeding)


Diagnosing Melanoma

To accurately diagnose melanoma a biopsy should be taken and analyzed by a pathologist

  • Punch biopsy – a tool with a circular blade is pressed into the skin around the suspicious mole or pigmented area to remove a round piece of skin

  • Excisional biopsy – the entire mole or pigmented area is removed

  • Incisional biopsy – only parts of the irregular mole or pigmented area is taken for analysis



  • Use adequate sunscreen on areas of the body not covered by clothes or shoes

  • Wear a wide brimmed hat and sunglasses

  • Wear water shoes that provide protection

  • Inspect your feet daily

  • Remove nail polish to inspect the toenails


Early detection of malignant melanoma is key. If you notice any changes in size of a mole on your foot or new pigmentations/discolorations come see us at Foot& Ankle Doctors, Inc.


Dr. Nejad

Extensor Hallucis Longus Tendon Injury

We all have our clumsy moments where we accidentally drop something on our foot. The top of the foot lacks a lot of fat or padding to protect vital structures such as arteries, nerves and tendons which makes dropping a piece of glass, metal or plastic worrisome. Pain, swelling, bruising and bleeding are common symptoms of injury to the foot. If you notice the inability to move your big toe up towards the ceiling you may have severed your extensor hallucis longus (EHL) tendon and should come to see one of our physicians at Foot& Ankle Doctors, Inc.


Severing the EHL can be treated conservatively or surgically depending on the severity of the injury. If the EHL tendon ends are close enough to each other conservative care would include a non-weight bearing cast for 6 weeks. This would allow the two torn tendon ends to heal together.


If the tendon ends are far apart surgery will be required to sew the two ends together or a tendon graft may be necessary to bridge the gap and restore tendon alignment and function.


Dr. Dardashti

Avoid Overuse Injuries This Spring

Spring is around the corner and many of us are ready to get back into shape and hit the pavement with the first spring thaw.  Many of us haven’t hit the gym for months and it’s important to get back into the routine of working out slowly to prevent overuse injuries.

Overuse injuries occur over time with repetitive microtrauma to tendons, bones and joints. Common overuse injuries in the lower extremities include runner’s knee, jumper’s knee, Achilles tendinitis and shin splints.

Causes of overuse injuries include

  • Training errors – over training or increasing acceleration, intensity, duration or frequency too quickly instead of gradually over time

  • Form error – improper technique or shoe gear can lead to injury overtime

  • Returning to a sport or activity too soon after injury

  • Biomechanical and individual factors – body alignment and foot structure can predispose individuals to overuse injuries

Treatment of overuse injuries can be remembered by the mnemonic RICE-AR

  • Rest – complete rest from the activity may be necessary or cross training with a different sport/activity

  • Ice – apply ice to injured area for 15 minutes a day

  • Compression – apply an ACE bandage or elastic wrap after icing to prevent further swelling

  • Elevation – elevate the injured extremity above the level of the heart when resting

  • Anti-inflammatory medication – ibuprofen or Tylenol can be taken to reduce inflammation

  • Re-condition – stretching and strength training are important steps in rehabilitation and preventing future injury

If you suspect you have an overuse injury, consult one of our doctors at Foot& Ankle Doctors, Inc.

Dr. Nejad

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