The biomechanics of cerclage placement: The effect of cerclage position and stress relaxation on cervical stress

House, Michael; Paskaleva, Anastassia; Myers, Kristin M.; Craigo, Sabrina; Socrate, Simona

doi:10.1016/j.ajog.2005.10.056

Cited by 3 publications

(3 citation statements)

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“…One therapeutic intervention for membrane prolapse is to perform a rescue cervical cerclage, whereby a suture is placed to close the cervix after the prolapsed membrane has been replaced into the uterus. 20,21 The procedure can be accompanied by amniocentesis to remove fluid thus facilitating replacement of the prolapsed membrane. 22 The clinical controversy surrounding cervical insufficiency and the use of cerclage sutures is complicated because it is difficult to separate the relative contribution of uterine contractions and cervical insufficiency.…”

Section: Cervical Insufficiencymentioning

confidence: 99%

Section: Risk Factors For Prom and Pprommentioning

confidence: 99%

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Microstructure and Mechanics of the Chorioamnion Membrane with an Emphasis on Fracture Properties

Calvin

Oyen

2007

Annals of the New York Academy of Sciences

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The normal mechanical functioning of an intact chorioamnion (CA) membrane is essential to successful human reproduction. The amnion and the chorion, separately and together as the bilayer chorioamnion, serve barrier and container functions throughout gestation, and these two important roles are required from conception to birth. The event associated with the "breaking of waters" is a landmark event in labor and delivery. Mechanical rupture of the CA membrane is part of the natural sequence of term delivery, but has serious implications when rupture occurs prior to term; preterm premature rupture of the CA membrane (PPROM) is associated with one-third of premature births. The current manuscript reviews PPROM from a clinical, anatomical, and mechanical perspective with a special focus on the clinically relevant fracture properties of these membranes. Emphasis is given to the link between membrane structure and properties at macroscopic and microscopic length scales. Because it has been demonstrated that the mechanical properties of prematurely failed membranes are not different from membranes of the same gestational age that have remained intact, membrane failure is a local process that must be explored in terms of local changes in structure and properties of isolated portions of the membrane. Future diagnostic techniques aimed at detection of changes in membrane structure (including thickness) and altered mechanical stiffness or strength may allow for prefailure diagnosis of membrane weak spots, thus opening the door for potential intervention and treatment techniques for preterm membrane rupture.

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Section: Cervical Insufficiencymentioning

confidence: 99%

Section: Risk Factors For Prom and Pprommentioning

confidence: 99%

Microstructure and Mechanics of the Chorioamnion Membrane with an Emphasis on Fracture Properties

Calvin

Oyen

2007

Annals of the New York Academy of Sciences

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show abstract

“…The rationale for cerclage placement is to reinforce the tissue with a strong, load‐bearing suture. However, in many cases, the cerclage is probably not load‐bearing24. Most of the cervical load is concentrated at the internal os while many cerclages are placed in the middle of the cervix, which may not be close enough to support the load.…”

Section: Clinical Correlates To a Structural Paradigm Of Cervical Funmentioning

confidence: 99%

The cervix as a biomechanical structure

House

Socrate

2006

Ultrasound in Obstet & Gyne

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Cervical Insufficiency

Iams¹

2009

Creasy and Resnik's Maternal-Fetal Medicine: Principles and Practice

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The biomechanics of cerclage placement: The effect of cerclage position and stress relaxation on cervical stress

Cited by 3 publications

References 0 publications

Microstructure and Mechanics of the Chorioamnion Membrane with an Emphasis on Fracture Properties

Microstructure and Mechanics of the Chorioamnion Membrane with an Emphasis on Fracture Properties

The cervix as a biomechanical structure

Cervical Insufficiency

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