Age is a risk factor for contralateral tendon rupture in patients with acute Achilles tendon rupture

  • Young Hwan Park
  • Tae Jin Kim
  • Gi Won Choi
  • Hak Jun KimEmail author



Rupture of the contralateral Achilles tendon following Achilles tendon rupture can lead to devastating outcomes. However, despite the clinical importance, the risk factors and incidence of contralateral Achilles tendon rupture have not been well studied. This study aimed to determine the incidence of contralateral tendon rupture after Achilles tendon rupture and to identify associated patient characteristics.


Medical records for 226 consecutive patients with Achilles tendon rupture were retrospectively reviewed. The occurrence of contralateral Achilles tendon rupture and patient characteristics were determined through review of medical records and telephone surveys.


The cumulative incidences of contralateral Achilles tendon rupture at 1, 3, 5, and 7 years after Achilles tendon rupture were 0.4%, 1.8%, 3.4%, and 5.1%, respectively. The only statistically significant risk factor was age between 30 and 39 years at the time of initial Achilles tendon rupture (hazard ratio = 4.9).


Patients who sustain Achilles tendon rupture in their 30 s have significantly increased risk for contralateral tendon rupture.

Level of evidence



Achilles tendon rupture Contralateral tendon rupture Age Risk factor 


Author contributions

YHP: lead investigator and first author. TJK: data analysis and manuscript review. GWC: data analysis and manuscript review. HJK: corresponding author, primary surgeon. No benefits in any form have been received or will be received from a commercial party related directly or indirectly to the contents of this study.


There is no funding source.

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

Ethical approval

Institutional review board approval was obtained, and the requirement for informed consent was waived.


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Copyright information

© European Society of Sports Traumatology, Knee Surgery, Arthroscopy (ESSKA) 2019

Authors and Affiliations

  • Young Hwan Park
    • 1
  • Tae Jin Kim
    • 1
  • Gi Won Choi
    • 2
  • Hak Jun Kim
    • 1
    Email author
  1. 1.Department of Orthopaedic SurgeryKorea University Guro HospitalSeoulSouth Korea
  2. 2.Department of Orthopaedic SurgeryKorea University Ansan HospitalAnsanSouth Korea

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