Purpose
To evaluate long term efficacy of percutaneous balloon kyphoplasty for osteoporotic compressive vertebral fracture.
Materials and Methods
Percutaneous balloon kyphoplasty was performed to 52 vertebral bodies, for 42 patients with compression fracture from March 2003 to October 2007. During observation, 32 patients (39 vertebral bodies) were followed over 5 years except 8 patients (19.0%) who have expired. Pre operational, post operational and final observational radiologic evaluation (vertebral height, compression ratio, kyphotic angle) and clinic evaluation(VAS score) were checked. And correlation with bone cement leakage, fracture of adjacent vertebral body, gender, age, bone mineral density and medication was analyzed.
Result
Average age was 71.3 years old and average observation period was 74.3 months. Average interval from injury to operation was 24.1 days. Vertebral compression ratio recovered 29.7% to 17.4% (12.3%), kyphotic angle improved 11.6 degree to 9.0 degree (2.6 degree) and there was no significant change until final observation. VAS score got better 7.60 to 3.57 (4.03) after operation. Bone cement leakage occurred in 5 cases (12.8%) and fracture of adjacent vertebral body occurred in 10 cases (25.6%), there was no correlation between two groups (p=1.000). Fracture of adjacent vertebral body showed meaningful correlation with bone mineral density only.
Conclusion
Percutaneous balloon kyphoplasty relieve the pain after compression fracture of vertebral body and is safe and efficient procedure to correct sagittal deformity. After 5 year follow up, the effect of procedure was maintained clinically. Bone cement leakage did not increase risk of fracture of adjacent vertebral body which occurred frequently in low bone mineral density.