The Efficacy of Hydroxyapatite for Screw Augmentation in Osteoporotic Patients

The stability of screw constructs is of considerable importance in determining the outcome, especially in spinal osteoporosis. Polymethylmethacrylate (PMMA) has been proven as an effective material for increasing the pullout strength of pedicle screws inserted into the osteoporotic bones. However, P...

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Published inNeurologia medico-chirurgica Vol. 53; no. 12; pp. 875 - 881
Main Authors JANG, Sang Hoon, LEE, June Ho, CHO, Ji Young, LEE, Ho-Yeon, LEE, Sang-Ho
Format Journal Article
LanguageEnglish
Published Japan The Japan Neurosurgical Society 2013
THE JAPAN NEUROSURGICAL SOCIETY
Subjects
Aged
Anthropometry
Biocompatible Materials
Bone Cements
Bone Screws
Durapatite
Female
fusion
Humans
hydroxyapatite
Internal Fixators
Ketones
Lumbar Vertebrae - diagnostic imaging
Lumbar Vertebrae - surgery
Male
Middle Aged
Original
osteoporosis
Osteoporosis - complications
Osteoporosis - surgery
pedicle screw
Polyethylene Glycols
Radiography
Retrospective Studies
screw augmentation
Spinal Fusion - instrumentation
Spondylolisthesis - complications
Spondylolisthesis - surgery
Treatment Outcome
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Summary:The stability of screw constructs is of considerable importance in determining the outcome, especially in spinal osteoporosis. Polymethylmethacrylate (PMMA) has been proven as an effective material for increasing the pullout strength of pedicle screws inserted into the osteoporotic bones. However, PMMA has several disadvantages, such as its exothermic properties, the risk of neural injury in the event of extravasation, and difficulties in performing revision surgery. In the current study, we used hydroxyapatite (HA) cement for screw augmentation in spinal osteoporosis. We conclude that HA cement is a useful tool for screw augmentation and recommend it as a promising option for spinal instrumentation in osteoporotic patients.
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This study was sponsored by a fund from the Wooridul Spine Foundation. None of the authors have a financial interest in the procedure under discussion. No benefits in any form have been or will be received from a commercial party related directly or indirectly to the subject of this manuscript.
Conflicts of Interest Disclosure
ISSN:0470-8105
1349-8029
DOI:10.2176/nmc.oa2012-0346