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Insufficient Penetration of Bone Cement Into the Trabecular Bone: A Potential Risk for Delayed Bone Cement
Yeong Ho Jeong1, Chul Joong Lee, Jei Taick Yeon
1From the *Zeropain Clinic, Seoul; and †Seoul National University Bundang Hospital, Seongnam, Korea.
Objective:
Balloon kyphoplasty is a minimally invasive procedure used in the treatment of vertebral compression fractures. Although cement leakage is a well-known complication of the procedure, delayed displacement of the injected bone cement material, occurring several weeks after kyphoplasty, is a rare occurrence. In this report, we describe a case of delayed dislodgement of the bone cement occurring 4 weeks after successful kyphoplasty for an osteoporotic compression fracture of L4.
Case Report:
A balloon kyphoplasty was successfully performed for the clinical management of an osteoporotic compression fracture of the L4 vertebral body in a 74-year-old patient with Kummel disease. However, further progression of the collapse of L4 vertebra was identified on radiographic imaging obtained 4 weeks after the kyphoplasty. A cystic filling pattern of the bone cement was observed, rather than the expected matrix-like pattern, which contributed to the continued progression of the collapse of the vertebral body.
Conclusions:
As delayed displacement of bone cement can result in progression of an osteoporotic compression fracture of the vertebrae, we propose that sufficient penetration of bone cement into the microstructure of the trabecular bone of the vertebral body during kyphoplasty could reduce the risk of this phenomenon.
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