Int J Sports Med 2014; 35(08): 714-722
DOI: 10.1055/s-0033-1358674
Review
© Georg Thieme Verlag KG Stuttgart · New York

Jumper’s Knee or Lander’s Knee? A Systematic Review of the Relation between Jump Biomechanics and Patellar Tendinopathy

H. Van der Worp
1  University of Groningen, University Medical Center, Center for Sports Medicine, Groningen, Netherlands
,
H. J. de Poel
2  University of Groningen, University Medical Center, Center for Human Movement Sciences, Groningen, Netherlands
,
R. L. Diercks
1  University of Groningen, University Medical Center, Center for Sports Medicine, Groningen, Netherlands
,
I. van den Akker-Scheek
1  University of Groningen, University Medical Center, Center for Sports Medicine, Groningen, Netherlands
,
J. Zwerver
1  University of Groningen, University Medical Center, Center for Sports Medicine, Groningen, Netherlands
› Author Affiliations
Further Information

Publication History



accepted after revision 08 October 2013

Publication Date:
27 February 2014 (eFirst)

Abstract

Patellar tendinopathy (jumper’s knee) is a common injury in sports that comprise jump actions. This article systematically reviews the literature examining the relation between patellar tendinopathy and take-off and landing kinematics in order to uncover risk factors and potential prevention strategies. A systematic search of the Pubmed, Embase and Amed databases was performed to identify studies that reported kinematics of sport specific jumps in relation to patellar tendinopathy. A quantitative analysis was performed on 4 indentified studies. Differences were found only between controls and asymptomatic subjects with patellar tendon abnormalities. Most differences were found during horizontal landing after forward acceleration. A synthesis of the literature suggests that horizontal landing poses the greatest threat for developing patellar tendinopathy. A stiff movement pattern with a small post-touchdown range of motion and short landing time is associated with the onset of patellar tendinopathy. Accordingly, employing a flexible landing pattern seems to be an expedient strategy for reducing the risk for (re-) developing patellar tendinopathy. Together, these findings indicate that improving kinetic chain functioning, performing eccentric exercises and changing landing patterns are potential tools for preventive and/or therapeutic purposes.