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Height Maintenance of the Augmented Vertebral Body: a Longitudinal Study of Patients Treated with Vertebral Augmentation for Painful Osteoporotic Vertebral Compression Fractures. 2012

Interventional Spine

Carla, A., de Venecia, MD
A. Orlando, Ortiz, Non ASSR Member

Paper/Mentor

Purpose

To assess the stability of height maintenance over time in the augmented vertebral bodies of patients treated for painful osteoporotic compression fractures.

Methods & Materials

A series of patients who were treated with vertebral augmentation for painful osteoporotic compression fractures and who were followed for at least 6 months were included in the study. All patient imaging encounters were evaluated. An endplate to endplate cement fill pattern was observed in the treated vertebrae. The augmented vertebral body height was measured and compared to a reference vertebral body from the same date of service. The measurements were then repeated for the same augmented and reference vertebrae at an imaging follow-up time point. A ratio of the augmented vertebral body height to the reference vertebral body height was calculated and used to compare height maintenance over time. A trained observer, blinded to the nature of the vertebral augmentation procedure and to the patient's bone density status, performed all measurements.

Results

40 vertebral augmentation procedures were evaluated among 38 patients, including 36 females and 2 males. The average patient age was 80 years, with patient ages ranging from 60 to 100 years. The mean and median length of time between date of service and follow-up imaging was 3.7 years and 3.8 years, respectively, ranging from 0.5 to 9.5 years. The measurements demonstrated no statistically significant difference (P=0.34) in the height of the augmented vertebral body over time.

Conclusion

There is no statistically significant change in the height of an augmented vertebral body over time. Vertebral augmentation with acrylic bone cement is a durable treatment.

References/Financial Disclosures

Kim MJ, Lindsey DP, Hannibal M, Alamin TF. Vertebroplasty versus kyphoplasty: biomechanical behavior under repetitive loading conditions. Spine (Phila Pa 1976). 2006 Aug 15;31(18):2079-84. Disclosures for A. Orlando Ortiz, MD, MBA, FACR: Speakers Bureau: Medtronic Spine, Inc. Orthovita, Inc.