Journal of Sports Science and Medicine
Journal of Sports Science and Medicine
ISSN: 1303 - 2968   
Ios-APP Journal of Sports Science and Medicine
Androit-APP Journal of Sports Science and Medicine
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©Journal of Sports Science and Medicine ( 2017 ) 16 , 1 - 5

Research article
Distribution of Platelet-rich Plasma after Ultrasound-Guided Injection for Chronic Elbow Tendinopathies
Gi-Young Park1, Dong Rak Kwon1, Hee Kyung Cho1, Jinyoung Park2, Jung Hyun Park2, 
Author Information
1 Department of Rehabilitation Medicine, Catholic University of Daegu School of Medicine, Daegu, Korea
2 Department of Rehabilitation Medicine, Gangnam Severance Hospital, Rehabilitation Institute of Neuromuscular Disease, Yonsei University College of Medicine, Seoul, Korea

Jung Hyun Park
✉ Department of Rehabilitation Medicine, Gangnam Severance Hospital, Yonsei University, 211 Eonjuro, Gangnam-gu, Seoul, Korea, 06219
Email: rmpjh@yuhs.ac
Publish Date
Received: 21-07-2016
Accepted: 16-08-2016
Published (online): 1-03-2017
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ABSTRACT

Characteristics of the spreads of platelet-rich plasma (PRP) are not widely known despite commonly use. This study aims to evaluate whether PRP stays within the injected area by using ultrasonography, to improve understanding of the spreads of intratendinous injected PRP. Thirty-nine patients (15 males, 24 females; mean age, 49.3 years), who had symptoms on their elbows (> 6 months) and diagnosed as lateral (25 elbows) or medial (14 elbows) tendinopathies of elbow, were included. The severity of tendon pathology was assessed by ultrasonography as tear or no tear. Immediately after ultrasound-guided PRP injection, ultrasound images were evaluated to assess the area of PRP distribution, which was defined as the presence of fluid or microbubbles. Ultrasound revealed that 13 elbows had tendon tear and 26 had no tear, respectively. Post-injection ultrasound confirmed the injected PRP was within the tendon in all cases. The mean distance of distribution from the injection site was 12.6 mm (5.0–26.0 mm). There was no difference in the distance of PRP distribution between tendon tear and no tear. Injected PRP spread to soft tissue outside the tendon in 20 of 39 cases. Intra-articular extension of PRP was observed in 5 cases. Although PRP remained intratendinous after the injection in all cases, some portion tended to spread outside from the injection site in a short space of time. Postinjection ultrasonographic imaging has a value for observing the spreading patterns of intratendinous PRP injection.

Key words: Tendons, tennis elbow, sports, pain, inflammation


           Key Points
  • This study aims to evaluate whether PRP stays within the injected area by using ultrasonography, to improve understanding of the spreads of intratendinous injected PRP.
  • Although PRP remained intratendinous after the injection in all cases, some portion tended to spread outside from the injection site in a short space of time.
 
 
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