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Clinical risk factors for Achilles tendinopathy: a systematic review
  1. Arco C van der Vlist1,
  2. Stephan J Breda2,
  3. Edwin H G Oei2,
  4. Jan A N Verhaar1,
  5. Robert-Jan de Vos1
  1. 1Department of Orthopedic Surgery, Erasmus MC University Medical Center, Rotterdam, The Netherlands
  2. 2Department of Radiology & Nuclear Medicine, Erasmus MC University Medical Center, Rotterdam, The Netherlands
  1. Correspondence to Arco C van der Vlist, Department of Orthopedic Surgery, Erasmus MC University Medical Center, Rotterdam, CA 3000, The Netherlands; a.vandervlist{at}erasmusmc.nl

Abstract

Background Achilles tendinopathy is a common problem, but its exact aetiology remains unclear.

Objective To evaluate the association between potential clinical risk factors and Achilles tendinopathy.

Design Systematic review.

Data sources The databases Embase, MEDLINE Ovid, Web of Science, Cochrane Library and Google Scholar were searched up to February 2018.

Eligibility criteria To answer our research question, cohort studies investigating risk factors for Achilles tendinopathy in humans were included. We restricted our search to potential clinical risk factors (imaging studies were excluded).

Results We included 10 cohort studies, all with a high risk of bias, from 5111 publications identified. There is limited evidence for nine risk factors: (1) prior lower limb tendinopathy or fracture, (2) use of ofloxacin (quinolone) antibiotics, (3) an increased time between heart transplantation and initiation of quinolone treatment for infectious disease, (4) moderate alcohol use, (5) training during cold weather, (6) decreased isokinetic plantar flexor strength, (7) abnormal gait pattern with decreased forward progression of propulsion, (8) more lateral foot roll-over at the forefoot flat phase and (9) creatinine clearance of <60 mL/min in heart transplant patients. Twenty-six other putative risk factors were not associated with Achilles tendinopathy, including being overweight, static foot posture and physical activity level.

Conclusion From an ocean of studies with high levels of bias, we extracted nine clinical risk factors that may increase a person’s risk of Achilles tendinopathy. Clinicians may consider ofloxacin use, alcohol consumption and a reduced plantar flexor strength as modifiable risk factors when treating patients with Achilles tendinopathy.

Trial registration number CRD42017053258.

  • tendon
  • aetiology
  • causality

This is an open access article distributed in accordance with the Creative Commons Attribution 4.0 Unported (CC BY 4.0) license, which permits others to copy, redistribute, remix, transform and build upon this work for any purpose, provided the original work is properly cited, a link to the licence is given, and indication of whether changes were made. See: https://creativecommons.org/licenses/by/4.0/.

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Footnotes

  • Contributors AvdV and R-JdV: study conception/design, data acquisition, data analysis and interpretation, and drafting and revision of manuscript. SJB and EHGO: data acquisition and critical revision. JANV: study conception/design, critical revision. All authors: final approval.

  • Funding This research is funded by the Dutch Arthritis Association and the Anna Foundation. Both are non-commercial organizations and were not involved in the content of this publication.

  • Competing interests None declared.

  • Provenance and peer review Not commissioned; externally peer reviewed.

  • Correction notice This article has been corrected since it first published online. The open access licence type has been amended.

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