Minimally Invasive Stent Screw-Assisted Internal Fixation Technique Corrects Kyphosis in Osteoporotic Vertebral Fractures with Severe Collapse: A Pilot "Vertebra Plana" Series.

Cianfoni, A; Delfanti, R L; Isalberti, M; Scarone, P; Koetsier, E; Bonaldi, G; Hirsch, J A; Pileggi, M (2022). Minimally Invasive Stent Screw-Assisted Internal Fixation Technique Corrects Kyphosis in Osteoporotic Vertebral Fractures with Severe Collapse: A Pilot "Vertebra Plana" Series. AJNR. American journal of neuroradiology, 43(5), pp. 776-783. American Society of Neuroradiology 10.3174/ajnr.A7493

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BACKGROUND AND PURPOSE

Fractures with "vertebra plana" morphology are characterized by severe vertebral body collapse and segmental kyphosis; there is no established treatment standard for these fractures. Vertebroplasty and balloon kyphoplasty might represent an undertreatment, but surgical stabilization is challenging in an often elderly osteoporotic population. This study assessed the feasibility, clinical outcome, and radiologic outcome of the stent screw-assisted internal fixation technique using a percutaneous implant of vertebral body stents and cement-augmented pedicle screws in patients with non-neoplastic vertebra plana fractures.

MATERIALS AND METHODS

Thirty-seven consecutive patients with vertebra plana fractures were treated with the stent screw-assisted internal fixation technique. Vertebral body height, local and vertebral kyphotic angles, outcome scales (numeric rating scale and the Patient's Global Impression of Change), and complications were assessed. Imaging and clinical follow-up were obtained at 1 and 6 months postprocedure.

RESULTS

Median vertebral body height restoration was 7 mm (+74%), 9 mm (+150%), and 3 mm (+17%) at the anterior wall, middle body, and posterior wall, respectively. Median local and vertebral kyphotic angles correction was 8° and 10° and was maintained through the 6-month follow-up. The median numeric rating scale score improved from 8/10 preprocedure to 3/10 at 1 and 6 months (P < .001). No procedural complications occurred.

CONCLUSIONS

The stent screw-assisted internal fixation technique was effective in obtaining height restoration, kyphosis correction, and pain relief in patients with severe vertebral collapse.

Item Type:

Journal Article (Original Article)

Division/Institute:

04 Faculty of Medicine > Department of Radiology, Neuroradiology and Nuclear Medicine (DRNN) > Institute of Diagnostic and Interventional Neuroradiology

UniBE Contributor:

Cianfoni, Alessandro

Subjects:

600 Technology > 610 Medicine & health

ISSN:

1936-959X

Publisher:

American Society of Neuroradiology

Language:

English

Submitter:

Pubmed Import

Date Deposited:

25 Apr 2022 16:55

Last Modified:

05 Dec 2022 16:19

Publisher DOI:

10.3174/ajnr.A7493

PubMed ID:

35450859

BORIS DOI:

10.48350/169468

URI:

https://boris.unibe.ch/id/eprint/169468

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