Percutaneous kyphoplasty for the treatment of spinal metastases

Chen,Feng; Xia,Yong‑Hui; Cao,Wen‑Zhen; Shan,Wei; Gao,Yang; Feng,Bo; Wang,Difei

doi:10.3892/ol.2016.4121

Percutaneous kyphoplasty for the treatment of spinal metastases

Authors:
- Feng Chen
- Yong‑Hui Xia
- Wen‑Zhen Cao
- Wei Shan
- Yang Gao
- Bo Feng
- Difei Wang
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Affiliations: Department of Interventional Radiology, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China, Department of Intensive Care Unit Department, Qianfoshan Hospital Affiliated to Shandong University Jinan, Shandong 250014, P.R. China, Department of Geriatrics, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
Published online on: January 18, 2016 https://doi.org/10.3892/ol.2016.4121
Pages: 1799-1806

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Abstract

The bones are the most common location for metastases, which may cause severe pain and damage, including osteolytic destruction and fractures. Pathological fractures of the spine are extremely painful and cause significant disability and morbidity in patients. Traditional open surgery has numerous complications, and radiation therapy may take weeks to become effective. To avoid the trauma and complication of open surgery, percutaneous kyphoplasty (PKP) is a minimally invasive procedure that has played a great role in the treatment of spinal metastases over the past several years. To evaluate the efficacy and safety of the treatment of spinal metastasis using PKP, the present study evaluated 282 patients who had received PKP between April 2009 and June 2014. The efficacy of PKP was evaluated using the visual analog scale for pain (VAS), Karnofsky performance score (KPS) and quality of life (QOL) score (short form with 36 questions). The KPS and QOL were measured pre‑operatively and 3 months post‑operatively. In addition, radiographical data, including the degree of restoration of the kyphotic angle and the anterior vertebral height, and leakage of bone cement, were measured. The safety of the surgery was assessed by complications and side effects reported during or subsequent to surgery. The present study measured the parameters prior to the surgery and at 24 h, 3 months, 6 months and 1 year post‑surgery, as well as at the last follow‑up date. The range of the follow‑up time was between 105 days and 15 months (mean, 401 days). The 282 patients underwent successful operations and the pain felt by the patients prior to the surgery was significantly alleviated. In addition, the analgesic intake of patients greatly decreased following PKP. KPS improved prior to and 3 months after the surgery. QOL also improved prior to and 3 months after the surgery. Radiographical data demonstrated that the kyphotic angle decreased following PKP, and the anterior vertebral height increased. Paravertebral leakage of bone cement occurred in 10 patients through a cortical defect, but without spinal cord compression or pulmonary embolism. Therefore, as a minimally invasive procedure, PKP may not only rapidly relieve the pain and disability experienced by patients, but it may also restore the kyphotic angle observed at the 1‑year follow‑up. Notably, PKP may safely improve the QOL of patients.

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