Kyphoplasty or Vertebroplasty  (inserting a tube into the defect in a  cancerous bone and injecting in bone cement/ see review article here

X-ray appearance of a collapsed vertebrae (on left) and same patient with visible white cement in bone after the procedure

Kyphoplasty is a minimally invasive spinal surgery procedure. It is used to treat painful progressive vertebral body collapse/fracture (VCFs). The VCFs may be caused by osteoporosis or the spread of tumor to the vertebral body.

Osteoporosis is age related softening of bones. It causes the building blocks of the spine to weaken and collapse. This results in severe pain and a progressive hunchback. Certain forms of cancer also weaken the bone and cause the same problems.

 

1
Treating osteoporotic and neoplastic vertebral compression fractures with vertebroplasty and kyphoplasty.

Hacein-Bey L,  J Palliat Med. 2005 Oct;8(5):931-8.

Division of Neuroradiology, Department of Radiology, Medical College of Wisconsin, Milwaukee, Wisconsin, USA.

Compression fractures are common in patients with osteoporosis and cancer. In particular, vertebral compression fractures are crippling, and pose an additional risk of cord compression. Although a number of nonmedical options such as bracing and exercise programs may help these patients, the combination of constant, severe pain and spinal instability was until recently almost invariably synonymous with painful gradual deterioration and a poor quality of life. Vertebroplasty, and more recently kyphoplasty, are minimally invasive procedures that aim at limiting or reversing painful collapse of the vertebrae, while providing stability to the treated segment of the spine. As these new options are highly effective and involve minimal risk, it is important that physicians be familiar with them. OBJECTIVE: This paper reviews the demographics of vertebral compression fractures, both osteoporotic and neoplastic, the technical aspects of vertebroplasty and kyphoplasty, and current results and outcomes.

RESULTS: Pain relief rates in excess of 90% have been reported with both vertebroplasty and kyphoplasty in patients with vertebral compression fractures. Procedural complication rates should be very low, in the 1%-2% range at most with proper technique. CONCLUSIONS: Until the advent of vertebroplasty, almost no effective therapeutic option could be offered to patients suffering from neoplastic or osteoporotic vertebral compression fractures, which are relatively common and often crippling. The technical feasibility of these procedures is high, the risk low, and the effectiveness high. Therefore, it is important that physicians consider vertebroplasty and kyphoplasty as viable and strong options.

Percutaneous vertebroplasty and kyphoplasty performed at a cancer center: refuting proposed contraindications.

Hentschel SJ, . J Neurosurg Spine. 2005 Apr;2(4):436-40.

Department of Neurosurgery and Anesthesiology-Pain Management, The University of Texas M D Anderson Cancer Center, Houston, Texas 77030-4009, USA.

OBJECT: The purpose of this study was to examine a group of patients with cancer who underwent a vertebroplasty or a kyphoplasty for a vertebral body (VB) fracture, even though the procedure may have been considered contraindicated based on previous reports in the literature. METHODS: The electronic database maintained by the Departments of Neurosurgery and Anesthesiology-Pain Management at the University of Texas M. D. Anderson Cancer Center was searched for patients who underwent vertebroplasty or kyphoplasty between January 2001 and July 2003. The criteria defining a contraindicated procedure were based on a review of the literature. Group I consisted of patients who did not undergo a contraindicated vertebroplasty or kyphoplasty, whereas Group II consisted of patients who underwent one of these procedures even though it may have been considered contraindicated. There were 53 patients with fractures at 132 levels who met the criteria for the study. Of these, 17 patients with fractures at 18 levels (14% of total) were considered to have undergone a contraindicated vertebroplasty or kyphoplasty (Group II). There were 12 complications (11%) in the 114 levels in Group I and seven complications (39%) in the 18 levels in Group II (p = 0.03). The most common complication was cement extrusion from the anterior VB that did not involve the venous system. No patient required an open surgical procedure to remove extruded cement. CONCLUSIONS: Vertebroplasty and kyphoplasty appear to be safe and effective in the setting of severe back pain caused by VB fracture that is unresponsive to other therapies, even in the presence of relative contraindications to the procedures.