...Ryan J. Leiphart; Snehal S. Shetye; Stephanie N. Weiss; Nathaniel A. Dyment; Louis J. Soslowsky Tendon injuries increase with age, yet the age-associated changes in tendon properties remain unexplained. Decorin and biglycan are two matrix proteoglycans that play complex roles in regulating tendon...

... for childbirth and affect peripheral joint laxity. Calcium demands also rise during pregnancy and lactation, resulting in reduced bone mineral density (BMD) and maternal bone loss. Altered tendon properties and bone loss during pregnancy and lactation may impact tendon insertion sites, such as rotator cuff...

...) requires full knowledge of the constitutive equations describing the material. Tendons may exhibit local tearing when cut and other diffuse damage when stretched, but because of structural and compositional complexity, their local mechanical behavior is not yet fully described in terms of constitutive...

... manuscript posted February 6, 2014, published online April 10, 2014. Assoc. Editor: Kristen Billiar. 16 08 2013 17 01 2014 06 02 2014 Tears on the bursal and articular sides of the rotator cuff tendons are known to behave differently and strain is thought to play a role...

.... 67 – 76 . 10.1016/j.orthres.2004.06.002 [2] Woo , S. L. , Debski , R. E. , Zeminski , J. , Abramowitch , S. D. , Saw , S. S. , and Fenwick , J. A. , 2000 , “ Injury and Repair of Ligaments and Tendons ,” Annu. Rev. Biomed. Eng. , 2 , pp. 83 – 118 . 10.1146...

...Jaclyn Kondratko; Sarah Duenwald-Kuehl; Roderic Lakes; Ray Vanderby References [1] Lochner , F. K. , Milne , D. W. , Mills , E. J. , and Groom , J. J. , 1980 , “ In Vivo and In Vitro Measurement of Tendon Strain in the Horse ,” Am. J. Veterinary Res. , 41 ( 12 ), pp. 1929...

...Sarah Duenwald-Kuehl; Hirohito Kobayashi; Roderic Lakes; Ray Vanderby, Jr. The viscoelastic behavior of tendons has been extensively studied in vitro. A noninvasive method by which to acquire mechanical data would be highly beneficial, as it could lead to the collection of viscoelastic data in vivo...

... accuracy of the individual connective tissue components for whole joint FE simulations subjected to static and dynamic loading regimes. finite element nonlinear viscoelasticity Prony series tendon Despite its historical popularity, the linear time dependence assumption of QLV theory limits...

... reconstruction (ACL-R). Our device is intended to simulate rehabilitation motion and exercise post ACL-R to optimize physical rehabilitation treatments for the improved healing of tendon graft ligament reconstructions. The device was validated for repeatability of the knee kinematic motion by measuring the force...

... strain measurement in vivo is difficult to perform. The goal of this in vitro study is to determine the efficacy of digital image correlation (DIC) methods to measure strain in B-mode ultrasound images. The Achilles tendons of eight male Wistar rats were removed and mechanically cycled between 0 and 1...

...Martin L. Tanaka; Charles A. Weisenbach; Mark Carl Miller; Laurel Kuxhaus Developing appropriate mathematical models for biological soft tissues such as ligaments, tendons, and menisci is challenging. Stress-strain behavior of these tissues is known to be continuous and characterized...

...Cyril J.F. Kahn; Xiong Wang; Rachid Rahouadj Although the mechanical properties of ligament and tendon are well documented in research literature, very few unified mechanical formulations can describe a wide range of different loadings. The aim of this study was to propose a new model, which can...

... as an equine superficial digital flexor tendon (SDFT) in static condition. We also performed measurements during mechanical testing of three SDFTs, obtaining the CSA variations until tendon rupture. The system was revealed to be very fast with acquisition times in the order of 0.1 s and interacquisition time...

... by similar response features. Here, this and related issues were studied in the tendon as a prototype for other soft tissues. Sheep digital tendons were preconditioned under strain that was higher by 1% than the one used in subsequent testing. Each specimen was then subjected to stress relaxation, and quick...

...Paul S. Robinson; Tung-Fu Huang; Elan Kazam; Renato V. Iozzo; David E. Birk; Louis J. Soslowsky Evaluations of tendon mechanical behavior based on biochemical and structural arrangement have implications for designing tendon specific treatment modalities or replacement strategies. In addition...