Tensile properties of the supraspinatus tendon

Itoi, Eiji; Berglund, Lawrence J.; Grabowski, John J.; Schultz, Fredrick M.; Growney, Eríc S.; Morrey, B.F.; An, Kai‐Nan ‐N

doi:10.1002/jor.1100130413

Cited by 229 publications

(109 citation statements)

References 24 publications

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“…Scaffold mechanical properties are directly related to fiber alignment and while they decreased as the polymer degraded, both the elastic modulus (Fig. 4) and ultimate tensile strength remain within range of those reported for the native supraspinatus tendon 128 .…”

Section: Stratified Scaffold For Tendon-bone Interface Tissue Engsupporting

confidence: 69%

Orthopedic Interface Tissue Engineering for the Biological Fixation of Soft Tissue Grafts

Moffat¹,

Wang²,

Rodeo³

et al. 2009

Clinics in Sports Medicine

100

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Interface tissue engineering is a promising new strategy aimed at the regeneration of tissue interfaces and ultimately enabling the biological fixation of soft tissue grafts utilized in orthopaedic repair and sports medicine. Many ligaments and tendons with direct insertions into subchondral bone exhibit a complex enthesis consisting of several distinct yet continuous regions of soft tissue, noncalcified fibrocartilage, calcified fibrocartilage and bone. Regeneration of this multi-tissue interface will be critical for functional graft integration and improving long term clinical outcome. This review will highlight current knowledge of the structure-function relationship at the interface, the mechanism of interface regeneration, and the strategic biomimicry implemented in stratified scaffold design for interface tissue engineering and multi-tissue regeneration. Potential challenges and future directions in this emerging field will also be discussed. It is anticipated that interface tissue engineering will lead to the design of a new generation of integrative fixation devices for soft tissue repair, and it will be instrumental for the development of integrated musculoskeletal tissue systems with biomimetic complexity and functionality.

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Section: Stratified Scaffold For Tendon-bone Interface Tissue Engsupporting

confidence: 69%

Orthopedic Interface Tissue Engineering for the Biological Fixation of Soft Tissue Grafts

Moffat¹,

Wang²,

Rodeo³

et al. 2009

Clinics in Sports Medicine

100

View full text Add to dashboard Cite

show abstract

“…The importance of the supraspinatus tendon and rotator cable in maintaining normal glenohumeral abduction torque has been suggested biomechanically 5,19 . Additionally, the anterior aspect of the supraspinatus tendon has been shown to have the highest tensile strength compared to the middle and posterior regions of the tendon 7 . Mesiha et al demonstrated the importance of the anterior supraspinatus insertion noting increased gapping, stiffness and regional tendon strains in experimental tears of the anterior supraspinatus tendon compared to tears isolated to the rotator crescent 16 .…”

Section: Discussionmentioning

confidence: 99%

Patterns of tear progression for asymptomatic degenerative rotator cuff tears

Keener

Hsu

Steger-May

et al. 2015

Journal of Shoulder and Elbow Surgery

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Background The purpose of this study is to examine patterns of rotator cuff tear size progression in degenerative rotator cuff tears and to compare tear progression risks for tears with and without anterior supraspinatus tendon disruption. Methodology Asymptomatic full-thickness rotator cuff tears with minimum 2-year follow-up were examined with annual shoulder ultrasounds. Integrity of the anterior 3mm of the supraspinatus tendon determined classification of cable-intact versus disrupted tears. Tear enlargement was defined as an increase of 5mm or greater in width. Tear propagation direction was calculated from measured changes in tear width in reference to the biceps tendon on serial ultrasounds. Results The cohort included 139 full-thickness tears with a mean subject age of 63.3 years and follow-up duration of 6.0 years. Ninety-six (69.1%) of the tears were considered cable-intact. Cable-disrupted tears were larger at baseline (median 19.0mm vs. 10.0mm, p<0.0001) than cable-intact tears. There was no difference in the risk of enlargement (52.1% vs. 67.4%, p=0.09) or time to enlargement (3.2 vs. 2.2 years, p=0.37) for cable-intact compared to cable-disrupted tears. There was no difference in the magnitude of enlargement for cable-intact and cable-disrupted tears (median 7.0mm vs.9.0mm, p=0.18). Cable-intact tears propagated a median of 5mm anteriorly and 4mm posteriorly, whereas cable-disrupted tears propagated posteriorly. Conclusions The majority of degenerative rotator cuff tears spare the anterior supraspinatus tendon. Although tears classified as cable-disrupted are larger at baseline than cable-intact tears, tear enlargement risks are similar for each tear type.

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“…This prevention of tendon injury may be related to decrease in the elastic modulus of the tendon. On the other hand, a tear of the supraspinatus tendon typically starts at the anterior one-third of the tendon (Tuite et al 1998, Matsen et al 2004), where the elastic modulus is greater than in the middle third or the posterior third (Itoi et al 1995). Based on these findings, it is likely that the greater the modulus of elasticity, the greater the risk of tendon rupture.…”

Section: Discussionmentioning

confidence: 99%

Alteration of the material properties of the normal supraspinatus tendon by nicotine treatment in a rat model

Ichinose¹,

Sano²,

Kishimoto³

et al. 2010

Acta Orthopaedica

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Background and purposeSeveral studies have shown that nicotine has a detrimental effect on the development of rotator cuff tear. However, little is known about its mechanism. We evaluated the effect of nicotine on the maximum tensile load, the maximum tensile stress, and the elastic modulus of the supraspinatus tendon in a rat model.Methods27 rats were randomly assigned to 3 groups. Subcutaneously implanted osmotic pumps delivered two different concentrations of nicotine solution (high dose: 45 ng/mL; low dose: 22.5 ng/mL) or saline solution (controls) over a 12-week period. The level of serum cotinine, a breakdown product of nicotine, was evaluated. We performed tensile testing using the left supraspinatus tendon in each rat. The maximum load of the supraspinatus tendon was measured, and the maximum tensile stress and elastic modulus were calculated.ResultsSerum cotinine levels showed controlled systemic release of nicotine. The maximum tensile load and stress were similar in the three groups. The elastic modulus was, however, higher in the nicotine groups than in the control group.InterpretationIn a rat model, ncotine caused a change in the material properties of the supraspinatus tendon. This change may predispose to a tear in the supraspinatus tendon.

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Tensile properties of the supraspinatus tendon

Cited by 229 publications

References 24 publications

Orthopedic Interface Tissue Engineering for the Biological Fixation of Soft Tissue Grafts

Orthopedic Interface Tissue Engineering for the Biological Fixation of Soft Tissue Grafts

Patterns of tear progression for asymptomatic degenerative rotator cuff tears

Alteration of the material properties of the normal supraspinatus tendon by nicotine treatment in a rat model

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