Effectiveness of progressive tendon-loading exercise therapy in patients with patellar tendinopathy: A randomised clinical trial

Stephan J. Breda*, Edwin H.G. Oei, Johannes Zwerver, Edwin Visser, Erwin Waarsing, Gabriel P. Krestin, Robert Jan De Vos

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

49 Citations (Scopus)
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Abstract

Objective To compare the effectiveness of progressive tendon-loading exercises (PTLE) with eccentric exercise therapy (EET) in patients with patellar tendinopathy (PT). Methods In a stratified, investigator-blinded, block-randomised trial, 76 patients with clinically diagnosed and ultrasound-confirmed PT were randomly assigned in a 1:1 ratio to receive either PTLE or EET. The primary end point was clinical outcome after 24 weeks following an intention-to-treat analysis, as assessed with the validated Victorian Institute of Sports Assessment for patellar tendons (VISA-P) questionnaire measuring pain, function and ability to play sports. Secondary outcomes included the return to sports rate, subjective patient satisfaction and exercise adherence. Results Patients were randomised between January 2017 and July 2019. The intention-to-treat population (mean age, 24 years, SD 4); 58 (76%) male) consisted of patients with mostly chronic PT (median symptom duration 2 years). Most patients (82%) underwent prior treatment for PT but failed to recover fully. 38 patients were randomised to the PTLE group and 38 patients to the EET group. The improvement in VISA-P score was significantly better for PTLE than for EET after 24 weeks (28 vs 18 points, adjusted mean between-group difference, 9 (95% CI 1 to 16); p=0.023). There was a trend towards a higher return to sports rate in the PTLE group (43% vs 27%, p=0.13). No significant between-group difference was found for subjective patient satisfaction (81% vs 83%, p=0.54) and exercise adherence between the PTLE group and EET group after 24 weeks (40% vs 49%, p=0.33). Conclusions In patients with PT, PTLE resulted in a significantly better clinical outcome after 24 weeks than EET. PTLE are superior to EET and are therefore recommended as initial conservative treatment for PT.

Original languageEnglish
Pages (from-to)501-509
Number of pages9
JournalBritish Journal of Sports Medicine
Volume55
Issue number9
DOIs
Publication statusPublished - 1 May 2021

Bibliographical note

Funding Information:
Acknowledgements The authors thank the National Basketball Association (NBA) and GE Healthcare Orthopaedics and Sports Medicine Collaboration for providing the research grant and GE Healthcare for providing the ultrasound equipment. We also thank Jill Cook and Ebonie Rio for sharing their experience with PTLE during the design phase of the study.

Publisher Copyright:
© Author(s) (or their employer(s)) 2021. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.

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