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Vertebroplasty / Kyphoplasty

Vertebroplasty and Kyphoplasty: Restoring Spine Stability and Relieving Pain

Vertebroplasty and kyphoplasty are minimally invasive surgical procedures designed to treat painful vertebral compression fractures, commonly caused by osteoporosis, trauma, or tumors. These procedures aim to stabilize fractured vertebrae, reduce pain, and restore spinal alignment, thereby improving patients’ quality of life. Given the aging population and the prevalence of osteoporosis, vertebroplasty and kyphoplasty have become important interventions in spine care, offering rapid pain relief and functional recovery.

Anatomy / Background

The human spine consists of 33 vertebrae stacked to form the vertebral column, which protects the spinal cord and supports body weight. Each vertebra has a thick, cylindrical body anteriorly and a vertebral arch posteriorly. The vertebral bodies bear most of the axial load. In conditions like osteoporosis, the vertebral bodies become porous and fragile, increasing the risk of compression fractures. These fractures can cause vertebral collapse, spinal deformity (such as kyphosis), and chronic pain.

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Causes / Etiology

  • Osteoporosis: The leading cause, characterized by decreased bone density and strength, making vertebrae susceptible to fractures even with minor trauma.
  • Trauma: High-impact injuries such as falls, motor vehicle accidents, or sports injuries can cause vertebral fractures.
  • Metastatic cancer: Tumors that spread to the spine weaken vertebral integrity.
  • Multiple myeloma: A cancer of plasma cells that can cause lytic lesions in vertebrae.
  • Other bone diseases: Conditions like osteomalacia or Paget’s disease may also predispose to fractures.

Symptoms / Clinical Presentation

Patients with vertebral compression fractures typically present with:

  • Sudden onset of localized back pain, often severe and worsened by movement.
  • Pain that may radiate around the ribs or abdomen depending on the fracture level.
  • Height loss and spinal deformity (kyphosis or “dowager’s hump”) in chronic cases.
  • Limited spinal mobility.
  • In rare cases, neurological symptoms such as numbness or weakness if spinal cord or nerve roots are compressed.

Diagnosis

  • Clinical examination: Assessment of pain location, spinal tenderness, posture, and neurological status.
  • X-rays: Initial imaging to detect vertebral height loss or fractures.
  • Magnetic Resonance Imaging (MRI): Provides detailed images of bone marrow edema, fracture age, and spinal cord involvement.
  • Computed Tomography (CT): Useful for detailed bony anatomy and procedural planning.
  • Bone density testing: To evaluate underlying osteoporosis.

Treatment Options

Non-Surgical Treatments
  • Pain management: Analgesics including NSAIDs, acetaminophen, or opioids.
  • Bracing: Spinal orthoses to immobilize and support the spine.
  • Physical therapy: To strengthen back muscles and improve mobility.
  • Osteoporosis treatment: Calcium, vitamin D, bisphosphonates, or other medications to improve bone density.
Surgical Treatments

When conservative measures fail or fractures cause significant pain and disability, vertebroplasty or kyphoplasty may be indicated.

  • Vertebroplasty: Injection of bone cement into the fractured vertebra to stabilize it.
  • Kyphoplasty: Similar to vertebroplasty but involves balloon inflation to restore vertebral height before cement injection.

Procedure Details

Vertebroplasty
  1. The patient is positioned prone on the operating table.
  2. Under local anesthesia and fluoroscopic guidance, a needle is inserted percutaneously into the fractured vertebral body.
  3. Polymethylmethacrylate (PMMA) bone cement is injected into the vertebra to stabilize the fracture.
  4. The needle is removed, and the patient is monitored for complications.
Kyphoplasty
  1. Similar initial steps as vertebroplasty.
  2. A balloon tamp is inserted and inflated inside the vertebral body to create a cavity and restore height.
  3. The balloon is deflated and removed.
  4. Bone cement is injected into the cavity to stabilize the vertebra.
  5. The procedure is completed under fluoroscopic guidance.

Both procedures typically take about 30 to 60 minutes and are performed on an outpatient basis or with a short hospital stay.

Postoperative Care / Rehabilitation

  • Patients are usually observed for a few hours post-procedure.
  • Most experience rapid pain relief and can resume activities within days.
  • Physical therapy may be recommended to improve posture and strengthen back muscles.
  • Continued management of osteoporosis is essential to prevent future fractures.
  • Follow-up imaging may be performed to assess cement placement and vertebral stability.

Risks and Complications

Though generally safe, potential risks include:

  • Cement leakage causing nerve root or spinal cord compression.
  • Infection at the injection site.
  • Bleeding or hematoma.
  • Allergic reaction to cement.
  • New fractures in adjacent vertebrae.
  • Rarely, pulmonary embolism from cement migration.

Prognosis

Vertebroplasty and kyphoplasty provide significant pain relief in approximately 70-90% of patients. Kyphoplasty may offer additional benefits in restoring vertebral height and reducing spinal deformity. Early intervention can improve mobility, reduce opioid use, and enhance quality of life. However, underlying bone health must be addressed to prevent recurrence.

When to See a Doctor

  • Sudden, severe back pain without obvious cause.
  • Height loss or spinal deformity.
  • Persistent pain despite conservative treatment.
  • Neurological symptoms such as numbness, weakness, or bowel/bladder dysfunction.
  • History of cancer with new back pain.

Conclusion

Vertebroplasty and kyphoplasty are effective minimally invasive procedures for managing painful vertebral compression fractures, especially in osteoporotic patients. Understanding the causes, symptoms, and treatment options empowers patients to seek timely care. If you experience symptoms suggestive of a vertebral fracture, consult a healthcare professional to explore appropriate diagnostic and therapeutic options. With proper management, many patients regain pain-free mobility and improved quality of life.

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