Strain patterns in the patellar tendon and the implications for patellar tendinopathy.

Published

Journal Article

This study investigated the strain pattern in human patellar tendon in an area of the tendon where changes commonly associated with patellar tendinitis are found. Eight fresh frozen human knees were instrumented with strain gauges on both the anterior and posterior side of the proximal patellar tendon. Both static and dynamic measurements were carried out in a range from 0 degrees to 60 degrees of flexion. We found uniform tensile strain in the tendon with the knee in full extension. However, as the knee was brought into flexion, the tensile strain increased on the anterior side but decreased on the posterior side in the central, proximal location of the tendon. The posterior side of the proximal patellar tendon is most commonly affected in patellar tendinopathy. This study indicates that this area of the tendon may not subjected to the highest tensile loads in the functional flexion range. It is possible that stress shielding is more important etiological factor in insertional tendinopathy as opposed to repetitive tensile loads.

Full Text

Duke Authors

Cited Authors

  • Almekinders, LC; Vellema, JH; Weinhold, PS

Published Date

  • January 2002

Published In

Volume / Issue

  • 10 / 1

Start / End Page

  • 2 - 5

PubMed ID

  • 11819013

Pubmed Central ID

  • 11819013

Electronic International Standard Serial Number (EISSN)

  • 1433-7347

International Standard Serial Number (ISSN)

  • 0942-2056

Digital Object Identifier (DOI)

  • 10.1007/s001670100224

Language

  • eng