A spinal cord infection refers to inflammation or damage within the spinal region caused by bacterial, fungal, or viral pathogens. These infections can affect the bones, discs, or surrounding tissues of the spine. Depending on the severity and location, symptoms may range from mild back pain to nerve-related complications that impact mobility and function.
What Are Spinal Cord Infections?
A spinal cord infection is a medical condition involving the presence of harmful organisms such as bacteria, fungi, or viruses within the spinal canal or nearby tissues. These infections can develop in the vertebrae (osteomyelitis), intervertebral discs (discitis), or within the protective layers around the spinal cord (epidural abscess).
While relatively uncommon, spinal infections can progress quickly and may lead to inflammation, swelling, or pressure on the spinal cord and nerves. In some cases, untreated infections may result in neurological deficits or spinal instability. Early diagnosis and appropriate treatment are important to manage symptoms and limit complications.
Types of Spinal Cord Infections
There are several types of spinal cord infections, each affecting a different part of the spine or surrounding structures. Understanding the nature of the infection helps determine the most suitable treatment.
Vertebral Osteomyelitis
This infection affects the spinal bones (vertebrae) and is commonly caused by bacteria entering the bloodstream. It may lead to pain, fever, and potential spinal instability if untreated.
Discitis
Discitis refers to inflammation of the intervertebral discs, often seen in children or older adults. It can be caused by infection or post-surgical complications and usually results in severe, localised back pain.
Epidural Abscess
An epidural abscess occurs when pus collects between the bones of the spine and the outer layer of the spinal cord. This condition can compress nearby nerves and may cause weakness or loss of bladder and bowel control.
Meningitis
Though more commonly linked to the brain, meningitis can affect the spine when the meninges (protective membranes) become inflamed. This can result in back pain, stiffness, and neurological symptoms.
Symptoms of A Spinal Cord Infection
The symptoms of a spinal cord infection can vary depending on the location and severity of the infection, as well as whether nearby nerves or the spinal cord are affected. Some people may initially experience mild back discomfort, while others may present with more serious neurological symptoms. Common signs to look out for include:
- Persistent or worsening back or neck pain
- Localised tenderness around the spine
- Fever, chills, or general malaise
- Numbness or tingling in the arms or legs
- Muscle weakness or reduced coordination
- Difficulty walking or maintaining balance
- Loss of bladder or bowel control in severe cases
Causes of Spinal Cord Infections
A spinal cord infection may be caused by bacteria, fungi, or, in rare cases, viruses that enter the spinal region. These pathogens may reach the spine through the bloodstream, direct trauma, or surgical procedures.
Infections often start in another part of the body, such as the skin, lungs, or urinary tract, and spread to the spine through circulation. Once present, the infection may settle in the bones, discs, or epidural space and begin to multiply, causing inflammation or abscess formation.
In some cases, surgical implants or injection-based procedures may introduce infection directly into the spinal area. Individuals with weakened immune systems or chronic illnesses are more vulnerable to spinal infections and may experience more aggressive symptoms or delayed healing.
Identifying the underlying cause can help direct timely treatment and minimise long-term risks to spinal and neurological function.
Risk Factors for Spinal Cord Infections
Certain health and lifestyle conditions may increase the likelihood of developing a spinal cord infection. Awareness of these risk factors can support prevention and early recognition.
Common Risk Factors:
Weakened Immune System
Conditions such as diabetes, cancer, or HIV may reduce the body’s ability to fight infection.
Recent Surgery or Injections
Spinal procedures, including surgery or epidural injections, can introduce bacteria into the spinal region if not properly managed.
Chronic Illnesses
Kidney disease, heart disease, and long-term use of steroids or immunosuppressants may make individuals more susceptible to infection.
Existing Infections
Infections in other parts of the body—such as the urinary tract, lungs, or skin—can travel through the bloodstream and reach the spine.
Age and Hospitalisation
Older adults and individuals recently hospitalised for other conditions may face higher risks due to reduced mobility or multiple medical interventions.
Monitoring for early symptoms is recommended in high-risk individuals.
Diagnosing Spinal Cord Infections
Diagnosing a spinal cord infection requires a careful combination of medical history, physical examination, imaging, and laboratory testing. Timely diagnosis helps prevent long-term complications such as spinal instability, abscess formation, or permanent nerve damage.
Physical Examination
A spine specialist will begin with a physical evaluation, looking for signs such as localised pain, swelling, restricted movement, or tenderness along the spine. Neurological assessments may be conducted to detect changes in reflexes, strength, balance, or sensation, especially if there are concerns about nerve compression or spinal cord involvement.
Blood Tests
Blood tests are used to detect inflammation or infection. Common indicators include elevated white blood cell counts, increased C-reactive protein (CRP), or erythrocyte sedimentation rate (ESR). Blood cultures may help isolate the specific organism causing the infection, which is essential for guiding treatment.
MRI or CT Scans
MRI scans are typically preferred for evaluating spinal cord infection, as they provide detailed images of soft tissues, discs, and spinal fluid spaces. They are particularly useful in detecting abscesses or inflammation near the spinal cord. CT scans may be used to examine bone damage or vertebral involvement.
Biopsy or Fluid Aspiration
In some cases, a sample of infected material may be collected using needle-guided biopsy or aspiration under imaging guidance. This allows for laboratory testing to confirm the organism and determine antibiotic or antifungal sensitivity.
A multi-step diagnostic approach is often necessary to accurately assess and manage spinal infections. Regular follow-up may also be required during treatment.
Treatment for Spinal Cord Infections
Treatment for a spinal cord infection depends on the severity, location, and type of organism involved. A timely response helps reduce the risk of nerve damage or long-term disability. Both non-surgical and surgical options are available.
Non-Surgical Treatments
1. Antibiotic or Antifungal Therapy
The primary approach involves targeted antibiotics or antifungal medication, usually administered intravenously. Treatment may continue for several weeks to fully eliminate the infection.
2. Bed Rest and Immobilisation
In some cases, patients may be advised to rest and limit movement to prevent strain on the infected spinal area. A brace may be used for added support.
3. Pain Management
Pain relief may be provided through oral medication or nerve-specific treatments while the infection is being managed.
Surgical Treatments
1. Minimally Invasive Endoscopic Spine Surgery
When infection leads to abscess formation, spinal compression, or poor response to medication, minimally invasive endoscopic spine surgery may be recommended. This approach uses small incisions to drain infected material or relieve pressure on the spinal cord.
2. Debridement and Stabilisation
In more severe infections, surgery may involve removing infected tissue (debridement) and stabilising the spine using hardware or bone grafts to prevent further collapse or deformity.
Treatment plans are developed based on the individual’s condition and recovery goals.
Summary: Spinal Cord Infection at a Glance
A spinal cord infection occurs when bacteria, fungi, or viruses reach the spinal region, causing inflammation or abscesses. These infections can affect the vertebrae, discs, or epidural space and may lead to pain, neurological symptoms, or spinal instability if untreated.
Early diagnosis and appropriate treatment are essential. At Achieve Spine & Orthopaedic Centre, we offer a range of non-surgical options and, when necessary, minimally invasive endoscopic spine surgery to manage spinal infections.
Wu Pang Hung
ABOUT AUTHOR
Dr. Wu Pang Hung is an experienced orthopaedic and spine surgeon in Singapore, specialising in both uniportal and biportal endoscopic spine procedures for complex cervical, thoracic, and lumbar spinal conditions. With over 10 years in the field, he is actively involved in numerous spine societies and contributes to several international journals and textbooks. Dr. Wu has also received specialised training in spine surgery across Canada, South Korea, Japan, and Germany.
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