Objective: The primary purpose of this study was to assess the relationship between muscle-tendon function and symptoms in patients with Achilles tendinopathy using a validated test battery.
Design: A prospective non-randomized trial.
Setting: Orthopaedic Department, University Hospital
Patients: Thirty-seven patients with clinical diagnosis of Achilles tendinopathy in the midportion of the tendon, with symptoms for more than 2 months, were evaluated at the initiation of the study and after one year.
Intervention: The patients were treated with a rehabilitation program, under the supervision by a physical therapist, for 6 months.
Main outcome measurements: The patients were evaluated with the Swedish version of the Victorian Institute of Sports Assessment – Achilles questionnaire (VISA-A-S) for symptoms and a test battery for the evaluation of lower leg muscle-tendon function.
Results: There were significant improvements in the VISA-A-S score (p<0.00, n=37) and the test battery (p<0.02, n=19) at the one-year follow-up. The VISA-A-S questionnaire had an effect size of 2.1 and the test battery had an effect size of 0.73. A low correlation (r=0.178, p>0.05) was found between the VISA-A-S score and the test battery. A high correlation (r=0.611, p<0.05) was found between the Drop CMJ and the VISA-A-S score. All other tests in the test battery had low correlations (r=-0.305-0.155, p>0.05) with the VISA-A-S score. Only 25 % (4 out of 16) of the patients who had full symptomatic recovery had achieved full recovery of muscle/tendon function as measured with the test battery.
Conclusion: Full symptomatic recovery in patients with Achilles tendinopathy does not ensure full recovery of muscle/tendon function. The VISA-A-S questionnaire and the test battery are sensitive to clinically relevant changes with treatment and can be recommended to be used in both the clinic and in research.
- Achilles tendon
- Victorian Institute of Sports Assessment Achilles questionnaire
- functional evaluation
- test battery
Statistics from Altmetric.com
If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.