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Clinical Trial Summary

This study evaluates the effect of platelet-rich plasma (PRP) use during needling of the extensor carpalis radialis brevis tendon, after failure of proper reeducation including focal extra-corporal shockwave therapy (ESWT). Half of the patients with receive PRP and needling, and half of the patients will receive needling alone. During the reeducation, the clinical evaluation will be monitored and reported as in a case series.


Clinical Trial Description

The conservative management of lateral epicondylitis is known to be a difficult-to-treat annoying condition. The first-line conservative management includes physical therapies with adjuvant painkillers and orthotics, and usually extracorporal shockwave therapy (ESWT). In clinical practice, infiltrative therapies a performed either before or after shockwave therapies. In the author's point of view, they represent a second-line conservative treatment. The success rate of ESWT for lateral epicondylitis depends mainly of the protocol used. Especially, poor results were observed with too low energy. Both radial and focal ESWT are effective, and focal ESWT has been showed as being as effective as surgical tenotomy. Concerning infiltrative therapies, it has been well established that corticosteroids are efficient in short-term but deleterious in long-term, likely for degenerative purposes. Prolotherapy, autologous blood, and botulinic toxin injections and others infiltrative therapies are less studied and therefore nowadays not clearly supported by the literature. Stem cells might be an alternative in the future. Platelet-rich-plasma (PRP) is nowadays widely used, but the results of clinical trials are discordant. Even if the superiority of PRP over corticosteroids is well established, the superiority of PRP on tendon needling or peppering is still controversial. Martin et al. 2019 found in a partially blinded randomized controlled trial (RCT) involving 71 patients no clinical differences at 6 months of follow-up between 2 sessions of peppering with saline + local anesthetic and PRP + local anesthetic. In a similar unblended RCT involving 50 patients, Schöffl et al. 2017 found no clinical differences at 6 months of follow-up. Montalvan et al. 2016 found in a RCT involving 50 patients between 2 infiltrations of PRP and saline no clinical differences at 6 months of follow-up. Rehabilitation was not allowed during the trial and the tendon was not peppered. Mishra et al. found in a blinded RCT involving 119 patients a positive clinical effect of PRP on saline solution, using a single injection with peppering. Behera et al. found similar results in a small RCT on 25 patients. Some factors has been advocated to influence the outcomes. The most relevant are: direct mechanic action of the needle and fenestration (peppering) technique, number of PRP injections, cells count (platelets, white blood- and red blood cells), activation of the platelets, concomitant local anesthetic use, peri-interventional use of NSAIDs and corticosteroids, concomitant rehabilitation or a contraria immobilization. Whether the positive results observed into the previous selected studies are due to either PRP, peppering, or any of the confounding factors described above remains to debate. The first aim of this study is to determine the proportion of patients, which would need an infiltrative technique after a proper rehabilitation protocol involving physical therapies, orthotics and ESWT. Our second aim is to establish whether PRP as adjuvant therapy to peppering would increase clinical outcomes. Details of sample size calculation (58 overall, 29 per group): 58 patients are required to have a 95% chance of detecting, as significant at the 5% level, an increase in the primary outcome measure from 50 in the control group to 60 in the experimental group, considering a standard deviation of 10% and a dropout rate of 10%. After the inclusion of 40 patients, the standard deviation will be re-evaluated and the sample size corrected accordingly if necessary. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT03987256
Study type Interventional
Source Hôpital de la Providence, Switzerland
Contact Adrien Schwitzguébel, MD
Phone +4179 762 05 62
Email adrien.schwitzguebel@gmail.com
Status Recruiting
Phase N/A
Start date January 1, 2020
Completion date July 2022

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