Histopathologic Findings of Retrieved Specimens of Vertebroplasty with Polymethylmethacrylate Cement: Case Control Study

Overview

Journal Spine (Phila Pa 1976)

Specialty Orthopedics

Date 2005 Oct 6

PMID 16205333

Citations 22

Authors

Kuo-Yuan Huang

Jing-Jou Yan

Ruey-Mo Lin

Affiliations

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Abstract

Study Design: Case control study.

Objective: To investigate the histopathologic findings of 2 retrieved specimens from failed vertebroplasty with polymethylmethacrylate (PMMA) cement.

Summary Of Background Data: Vertebroplasty using PMMA cement has been commonly used to treat debilitating back pain from compression fracture, angiomas, and metastatic cancer. However, there was concern about the unpredictable future results with PMMA cement. The histopathologic changes were rarely reported.

Methods: There were 2 PMMA augmented and 3 nonaugmented fractured vertebral bodies retrieved for histopathologic study. Between the 2 groups, we compared the findings of bone necrosis, foreign body reaction, fibrotic wall formation, and neovascularization.

Results: Bone necrosis was noted in the periphery of PMMA cement, which was surrounded by fibrotic tissues. In contrast, no fibrotic wall formation could be found in the nonaugmented control group. Foreign body reaction was only noted in PMMA augmented cases, and neovascularization was only noted in the control cases.

Conclusion: PMMA cement might not be as bioinert as we considered. Therefore, the long-term safety of vertebroplasty should be further evaluated.

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