HSS Journal ®

, Volume 9, Issue 2, pp 166–170 | Cite as

Use of Imatinib in the Prevention of Heterotopic Ossification

  • Clément M. L. Werner
  • Stefan M. Zimmermann
  • Carola C. Würgler-Hauri
  • Joseph M. Lane
  • Guido A. Wanner
  • Hans-Peter Simmen
Original Article



Heterotopic ossification (HO) is a common complication following orthopedic and trauma surgery, which may have substantial negative effects on the postoperative outcome. Angiogenesis appears to play a critical role in heterotopic ossification. One of the involved signaling molecules is platelet-derived growth factor (PDGF) which may be inhibited by imatinib.


Our goal was to prevent HO by pharmacologically interfering with the molecular signaling pathways involved in the developmental process. We hypothesized that by administering a proven inhibitor of PDGF expression, heterotopic bone formation may be prevented.


The effect of imatinib on HO formation was studied in a murine model which reliably produces islets of HO within the soft tissue following Achilles tenotomy. The control group underwent Achilles tenotomy only. The imatinib group received imatinib mesylate. After trial completion, the limbs were harvested and scanned by micro-CT. Heterotopic bone volume was then identified and quantified.


The mean volume of heterotopic bone formed in the control group was 0.976mm3 compared to 0.221 mm3 in the imatinib group. The volume of HO in the treatment group was reduced by 85% compared to the control group.


The administration of imatinib was associated with a significantly reduced volume of HO. This may be due to the inhibitory effect of imatinib on the PDGF signaling pathway during development of HO.

Clinical Relevance

The successful reduction of HO formation following imatinib administration has led to further insight concerning the pathogenesis of HO which in the future may lead to new clinical approaches towards the prevention of HO.


heterotopic ossification prevention imatinib mesylate murine PDGF 

Supplementary material

11420_2013_9335_MOESM1_ESM.pdf (344 kb)
ESM1(PDF 344 kb)


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Copyright information

© Hospital for Special Surgery 2013

Authors and Affiliations

  • Clément M. L. Werner
    • 1
    • 3
  • Stefan M. Zimmermann
    • 1
  • Carola C. Würgler-Hauri
    • 1
  • Joseph M. Lane
    • 2
  • Guido A. Wanner
    • 1
  • Hans-Peter Simmen
    • 1
  1. 1.Department of TraumatologyUniversity HospitalZurichSwitzerland
  2. 2.Hospital for Special SurgeryNew YorkUSA
  3. 3.Klinik für UnfallchirurgieUniversitätsSpital ZürichZürichSwitzerland

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