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01.10.2012 | General Gynecology

Functional interactions between the fossa ischioanalis, levator ani and gluteus maximus muscles of the female pelvic floor: a prospective study in nulliparous women

verfasst von: Irina Soljanik, Udo Janssen, Florian May, Helga Fritsch, Christian G. Stief, Ernst R. Weissenbacher, Klaus Friese, Andreas Lienemann

Erschienen in: Archives of Gynecology and Obstetrics | Ausgabe 4/2012

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Abstract

Purpose

We evaluated the role of the fossa ischioanalis (FI) in functional relations between the levator ani (LA) and gluteus maximus muscles (GM) in healthy female volunteers.

Methods

Twenty-three nulliparae were examined. Electromyogramms of LA and GM were simultaneously recorded during voluntary contraction of the pelvic floor muscles (PFM) and at rest in six body positions. The surface areas of LA (LAA), FI (FIA) and GM (GMA) were evaluated using MRI.

Results

Simultaneous LA and GM contractions were electromyographically observed irrespectively of body position in 97.2 %. MRI revealed synchronous movement of all structures: while LAA (−7.4 %) reduced, GMA increased (+6.8 %), FIA changed significantly (+3.4 %).

Conclusions

The LA, FI and GM are morphologically and functionally connected. We recommend considering these structures as the ‘LFG-Complex’, emphasising the importance of this unit for functional integration of the pelvic floor. The findings of this study may contribute to understanding of urinary continence mechanism and disorders after pelvic floor surgery and obstetrical trauma.

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Titel: Functional interactions between the fossa ischioanalis, levator ani and gluteus maximus muscles of the female pelvic floor: a prospective study in nulliparous women
verfasst von: Irina Soljanik
Udo Janssen
Florian May
Helga Fritsch
Christian G. Stief
Ernst R. Weissenbacher
Klaus Friese
Andreas Lienemann
Publikationsdatum: 01.10.2012
Verlag: Springer-Verlag
Erschienen in: Archives of Gynecology and Obstetrics / Ausgabe 4/2012
Print ISSN: 0932-0067
Elektronische ISSN: 1432-0711
DOI: https://doi.org/10.1007/s00404-012-2377-4

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Functional interactions between the fossa ischioanalis, levator ani and gluteus maximus muscles of the female pelvic floor: a prospective study in nulliparous women

Abstract

Purpose

Methods

Results

Conclusions

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Purpose

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