Locally administered bisphosphonate in hip stem revisions using the bone impaction grafting technique: a randomised, placebo-controlled study with DXA and five-year RSA follow-up

Research output: Contribution to journalArticle

Abstract

Background: Bisphosphonates have previously been shown to increase the density of impacted graft bone. In the present study we hypothesise that bisphosphonates also reduce early stem subsidence. We examined the effect of locally applied bisphosphonate to allografts on prosthetic micromotion and bone density in femoral stem revision with impaction grafting. Methods: 37 patients were randomised to either clodronate or saline as local adjunct to the morsellised allograft bone. 24 patients were finally analysed per protocol and evaluated by dual-energy x-ray absorptiometry (DXA) during the first year and with radiostereometric analysis (RSA) for 5 years. Results: There were no significant differences neither in bone density, nor in migratory behaviour between the groups. The femoral stems had subsided 3.6 mm in both groups (p = 0.99) at 5 years and there was no difference as measured over time with mixed models analysis. The clinical outcome was good in both groups. Conclusion: Clodronate as a local addendum to allograft bone in hip revision did not increase bone density or reduce micromotion of the implant.

Details

Authors
Organisations
External organisations
  • Skåne University Hospital
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Orthopedics

Keywords

  • Arthroplasty, bisphosphonates, bone graft, hip, radiostereometric analysis, revision
Original languageEnglish
Pages (from-to)26-34
JournalHIP International
Volume29
Issue number1
Early online date2018 Jun 28
Publication statusPublished - 2019 Jan
Publication categoryResearch
Peer-reviewedYes