The efficacy of hydroxyapatite for screw augmentation in osteoporotic patients

Neurol Med Chir (Tokyo). 2013;53(12):875-81. doi: 10.2176/nmc.oa2012-0346. Epub 2013 Nov 8.

Abstract

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.

Publication types

  • Case Reports
  • Evaluation Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Aged
  • Anthropometry
  • Benzophenones
  • Biocompatible Materials
  • Bone Cements*
  • Bone Screws*
  • Durapatite*
  • Female
  • Humans
  • Internal Fixators
  • Ketones
  • Lumbar Vertebrae / diagnostic imaging
  • Lumbar Vertebrae / surgery*
  • Male
  • Middle Aged
  • Osteoporosis / complications
  • Osteoporosis / surgery*
  • Polyethylene Glycols
  • Polymers
  • Radiography
  • Retrospective Studies
  • Spinal Fusion / instrumentation*
  • Spondylolisthesis / complications
  • Spondylolisthesis / surgery*
  • Treatment Outcome

Substances

  • Benzophenones
  • Biocompatible Materials
  • Bone Cements
  • Ketones
  • Polymers
  • polyetheretherketone
  • Polyethylene Glycols
  • Durapatite