When it comes to foot health, not all infections are limited to the skin. In some cases, bacteria can spread deep into the bone, causing a condition known as osteomyelitis. This is a potentially serious infection that requires prompt diagnosis and treatment to prevent permanent damage, amputation, or even life-threatening complications.
Podiatrists are experts in diagnosing and treating foot and ankle infections, including osteomyelitis. Early intervention can make the difference between saving and losing a limb.
What Is Osteomyelitis?
Osteomyelitis is an infection of the bone. It most commonly occurs when bacteria enter the bone through:
- An open wound or ulcer
- A puncture injury (such as stepping on a nail)
- A surgical incision
- A fracture with broken skin
- Spread of infection from nearby soft tissues
- Less commonly, bacteria traveling through the bloodstream
The bones of the foot are particularly vulnerable in people with diabetes, poor circulation, or peripheral neuropathy because small wounds may go unnoticed and become infected.
Who Is at Risk?
Anyone can develop osteomyelitis, but certain individuals are at much higher risk, including those with:
- Diabetes mellitus
- Peripheral neuropathy
- Peripheral arterial disease (PAD)
- Chronic foot ulcers
- Previous foot infections
- Weakened immune systems
- Kidney disease
- Smoking history
- Previous foot surgery
- Traumatic foot injuries
Diabetic foot ulcers are one of the leading causes of osteomyelitis in the foot.
Symptoms of Osteomyelitis
Symptoms can vary depending on the severity and location of the infection. Common signs include:
- Persistent foot pain
- Swelling
- Redness
- Warmth over the affected area
- Drainage from a wound
- A wound that will not heal
- Fever or chills (not always present)
- Difficulty walking
- Foul odor from an ulcer
People with diabetic neuropathy may experience little or no pain despite having a severe infection.
Why Osteomyelitis Is Dangerous
Bone infections do not usually resolve on their own. Without treatment, osteomyelitis can lead to:
- Bone destruction
- Chronic infection
- Non-healing wounds
- Tissue death
- Abscess formation
- Sepsis (a life-threatening bloodstream infection)
- Partial foot amputation
- Major limb amputation
The earlier treatment begins, the better the chances of preserving the foot.
How Podiatrists Diagnose Osteomyelitis
A podiatrist will perform a thorough evaluation that may include:
Physical Examination
The foot is carefully examined for:
- Ulcers
- Drainage
- Swelling
- Bone exposure
- Signs of poor circulation
- Areas of tenderness
Imaging Studies
Imaging may include:
- X-rays
- MRI (the most sensitive imaging study for detecting bone infection)
- CT scan
- Nuclear medicine bone scans in selected cases
Laboratory Testing
Blood work may include:
- Complete blood count (CBC)
- C-reactive protein (CRP)
- Erythrocyte sedimentation rate (ESR)
These tests help determine the severity of inflammation and infection.
Bone Biopsy
In some cases, obtaining a sample of bone is the best way to identify the bacteria causing the infection. This allows treatment with the most effective antibiotic.
How Podiatrists Treat Osteomyelitis
Treatment depends on the severity of the infection, the patient’s overall health, and how much bone is involved.
Antibiotic Therapy
Many patients require:
- Intravenous (IV) antibiotics
- Oral antibiotics
- Several weeks of treatment
The specific medication is selected based on culture results whenever possible.
Surgical Debridement
If infected or dead bone is present, surgery may be necessary to remove it.
Debridement helps:
- Eliminate infected tissue
- Reduce bacterial burden
- Improve healing
- Increase the effectiveness of antibiotics
Wound Care
For patients with diabetic ulcers or open wounds, podiatrists provide:
- Regular wound debridement
- Advanced wound dressings
- Negative pressure wound therapy (wound VAC) when appropriate
- Skin substitutes or biologic grafts in selected cases
Offloading
Reducing pressure on the affected foot is essential.
Treatment may include:
- Surgical shoes
- Walking boots
- Custom braces
- Total contact casting
- Custom orthotics
Improving Blood Flow
Poor circulation can prevent healing. When necessary, podiatrists coordinate care with vascular specialists to evaluate and improve blood flow before wounds can heal.
Can Osteomyelitis Be Prevented?
Many cases can be prevented with proper foot care.
Tips include:
- Inspect your feet every day.
- Wear properly fitting shoes.
- Never ignore cuts, blisters, or puncture wounds.
- Keep diabetes under good control.
- Stop smoking.
- Seek medical attention promptly for wounds that are not improving.
- Attend routine diabetic foot examinations.
Early treatment of even a small foot wound can prevent a serious bone infection.
Why Early Treatment Matters
The sooner osteomyelitis is diagnosed, the more treatment options are available. Delayed care often results in larger surgeries, longer courses of antibiotics, prolonged wound healing, and an increased risk of amputation.
If you have diabetes or poor circulation, do not wait for severe pain to develop. Many serious infections occur with minimal discomfort due to nerve damage.
When Should You See a Podiatrist?
Schedule an evaluation immediately if you experience:
- A foot wound that has not healed within two weeks
- Increasing redness or swelling
- Drainage from an ulcer
- Bone visible through a wound
- Fever associated with a foot infection
- A puncture wound, especially if you have diabetes
- New foot pain with redness and warmth
Prompt treatment can help prevent complications and preserve your mobility.
The Bottom Line
Osteomyelitis is a serious bone infection, but it is highly treatable when recognized early. Podiatrists play a vital role in diagnosing bone infections, performing advanced wound care, coordinating imaging and laboratory testing, prescribing appropriate treatments, and, when necessary, performing surgery to remove infected tissue while preserving as much healthy foot structure as possible.
If you have diabetes, a chronic foot wound, or signs of infection, don’t ignore the warning signs. Early evaluation by a podiatrist can help protect your health, save your foot, and prevent life-threatening complications.
Need Expert Foot Care?
If you have a foot wound that isn’t healing or you’re concerned about infection, the team at Hollowbrook Foot Specialist, P.C. is here to help. We provide comprehensive diabetic foot care, advanced wound management, infection treatment, and limb preservation services. Contact our office today to schedule an evaluation and take the first step toward healing.
By Dr. Yavor Geshev, DPM, FACPM, DABFAS, DABPM
