[논문]Effects of pulsed electromagnetic field therapy at different frequencies and durations on rotator cuff tendon-to-bone healing in a rat model

Huegel, Julianne; Choi, Daniel S.; Nuss, Courtney A.; Minnig, Mary C.C.; Tucker, Jennica J.; Kuntz, Andrew F.; Waldorff, Erik I.; Zhang, Nianli; Ryaby, James T.; Soslowsky, Louis J.

doi:10.1016/j.jse.2017.09.024

Effects of pulsed electromagnetic field therapy at different frequencies and durations on rotator cuff tendon-to-bone healing in a rat model 원문보기

Journal of shoulder and elbow surgery, v.27 no.3, 2018년, pp.553 - 560

Huegel, Julianne (Reprint requests: Louis J. Soslowsky, PhD, McKay Orthopaedic Research Laboratory, 110 Stemmler Hall, 3450 Hamilton Walk, Philadelphia, PA 19104-6081, USA. (L.J. Soslowsky).) , Choi, Daniel S. , Nuss, Courtney A. , Minnig, Mary C.C. , Tucker, Jennica J. , Kuntz, Andrew F. , Waldorff, Erik I. , Zhang, Nianli , Ryaby, James T. , Soslowsky, Louis J.

Abstract ▼ AI-Helper

Background Rotator cuff tears affect millions of individuals each year, often requiring surgical intervention. However, repair failure remains common. We have previously shown that pulsed electromagnetic field (PEMF) therapy improved tendon-to-bone healing in a rat rotator cuff model. The purpose of this study was to determine the influence of both PEMF frequency and exposure time on rotator cuff healing. Methods Two hundred ten Sprague-Dawley rats underwent acute bilateral supraspinatus injury and repair followed by either Physio-Stim PEMF or high-frequency PEMF therapy for 1, 3, or 6 hours daily. Control animals did not receive PEMF therapy. Mechanical and histologic properties were assessed at 4, 8, and 16 weeks. Results Improvements in different mechanical properties at various endpoints were identified for all treatment modalities when compared with untreated animals, regardless of PEMF frequency or duration. Of note, 1 hour of Physio-Stim treatment showed significant improvements in tendon mechanical properties across all time points, including increases in both modulus and stiffness as early as 4 weeks. Collagen organization improved for several of the treatment groups compared with controls. In addition, improvements in type I collagen and fibronectin expression were identified with PEMF treatment. An important finding was that no adverse effects were identified in any mechanical or histologic property. Conclusions Overall, our results suggest that PEMF therapy has a positive effect on rat rotator cuff healing for each electromagnetic fundamental pulse frequency and treatment duration tested in this study.

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Effects of pulsed electromagnetic field therapy at different frequencies and durations on rotator cuff tendon-to-bone healing in a rat model 원문보기

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