[en] INTRODUCTION: Jumper's knee is a frequent chronic overuse syndrome of the upper part of the patellar tendon. Platelets contain lots of growth factors which could enhance the healing process of tendons. METHODS: Twenty patients with chronic upper patellar tendinopathy were enrolled. Assessments were made before infiltration of PRP, and 6 weeks and 3 months after the infiltration, using a 10--point Visual Analogic Scale, clinical examinations with a pressure algometer, algofunctional scores (IKDC and VISA--P), functional assessments (isokinetic and optojump evaluations) and imagery (ultrasounds and MRI). The PRP was obtained with an apheresis system (COM.TEC, Fresenius). Six millilitres of PRP were injected without local anaesthetic. One week after infiltration, patients started a standardised sub--maximal eccentric reeducation. RESULTS: Pain during daily activities significantly decreased with time. During functional evaluation, it decreased as well, but without significant functional improvement. No improvements in the imagery measurements were observed. Younger patients seemed to be more susceptible to have an improvement of pain by the PRP infiltration. CONCLUSION: This study demonstrates that a local infiltration of PRP associated with a submaximal eccentric protocol can improve symptoms of chronic jumper's knee in patients non--responsive to classical conservative treatments.
Disciplines :
Orthopedics, rehabilitation & sports medicine
Author, co-author :
Kaux, Jean-François ; Université de Liège - ULiège > Département des sciences de la motricité > Département des sciences de la motricité
Croisier, Jean-Louis ; Université de Liège - ULiège > Département des sciences de la motricité > Kinésithérapie générale et réadaptation
Bruyère, Olivier ; Université de Liège - ULiège > Département des sciences de la santé publique > Santé publique, Epidémiologie et Economie de la santé
Rodriguez de la Cruz, Carlos
Forthomme, Bénédicte ; Université de Liège - ULiège > Département des sciences de la motricité > Rééducation du membre supérieur
Brabant, Gautier
Lapraille, Stuart
Lonneux, Vincent
Noel, David
Le Goff, Caroline ; Université de Liège - ULiège > Département de pharmacie > Département de pharmacie
Gothot, André ; Université de Liège - ULiège > Département des sciences biomédicales et précliniques > Biologie de la coagulation et de l'hémostase
COLLETTE, Julien ; Centre Hospitalier Universitaire de Liège - CHU > Chimie médicale
Crielaard, Jean-Michel ; Université de Liège - ULiège > Département des sciences de la motricité > Evaluation et entraînement des aptitudes physiques
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