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Knee Surgery, Sports Traumatology, Arthroscopy

, Volume 25, Issue 6, pp 1884–1891 | Cite as

Statin-induced calcific Achilles tendinopathy in rats: comparison of biomechanical and histopathological effects of simvastatin, atorvastatin and rosuvastatin

  • Ferda Kaleağasıoğlu
  • Ercan OlcayEmail author
  • Vakur Olgaç
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Abstract

Purpose

Accumulating clinical evidence indicates the risk of tendinopathy and spontaneous and/or simultaneous tendon ruptures associated with statin use. This experimental study was designed to evaluate and compare the biomechanical and histopathological effects of the three most commonly prescribed statins (simvastatin, atorvastatin and rosuvastatin) on the Achilles tendon in rats.

Methods

Statins were administered by gavage to rats at daily doses of 20 and 40 mg/kg for 3 weeks. One week later, the Achilles tendons were dissected and their biomechanical properties, including ultimate tensile force, yield force and elastic modulus, were determined. The samples were stained with haematoxylin–eosin and examined under a light microscope. The biomechanical properties of the tibia were tested by three-point bending test. Bone mineral density (BMD) and the lengths of tibias were measured by computed tomography.

Results

All the statins caused deterioration of the biomechanical parameters of the Achilles tendon. Histopathological analysis demonstrated foci of dystrophic calcification only in the statin-treated groups. However, the number and the total area of calcific deposits were similar between the statin groups. The biomechanical parameters of tibias were improved in all the statin groups. BMD in the statin-treated groups was not significantly different from the control group.

Conclusion

All the statins tested are associated with calcific tendinopathy risk of which full awareness is required during everyday medical practice. However, statin-associated improvement of bone biomechanical properties is a favourable feature which may add to their beneficial effects in atherosclerotic cardiovascular disease, especially in the elderly.

Keywords

Simvastatin Atorvastatin Rosuvastatin Biomechanics Calcific tendinopathy Achilles tendon Bone density 

Notes

Acknowledgments

The funding support from Turkish Society of Orthopaedics and Traumatology (TOTBID) for this work is gratefully acknowledged.

Author contribution

This research project was designed and conducted by F. Kaleağasıoğlu and E. Olcay who also interpreted the data, drafted the paper and revised it critically. V. Olgac conducted and interpreted the pathological analysis.

Compliance with ethical standards

Conflict of interest

The authors declare that there are no conflicts of interest.

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Copyright information

© European Society of Sports Traumatology, Knee Surgery, Arthroscopy (ESSKA) 2015

Authors and Affiliations

  • Ferda Kaleağasıoğlu
    • 1
  • Ercan Olcay
    • 2
    • 3
    Email author
  • Vakur Olgaç
    • 4
  1. 1.Department of Pharmacology, Faculty of MedicineUniversity of YeditepeIstanbulTurkey
  2. 2.Department of Orthopaedic Surgery, Faculty of MedicineUniversity of KafkasKarsTurkey
  3. 3.Department of Orthopaedic SurgeryKanuni Sultan Suleyman Educational HospitalIstanbulTurkey
  4. 4.Department of Pathology, Institute of OncologyUniversity of IstanbulIstanbulTurkey

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