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FILIERA PELVI-GENITAL

Filiera pelvi-genital este reprezentat de ansamblul elementelor materne, strbtute de ft in momentul na terii.

Este alctuit din pr i osoase (bazin osos) i pr i moi (bazin moale).

Bazinul osos este format prin unirea celor dou oase coxale (ilion, ischion si pube) cu sacrul si coccisul.Solidarizarea acestor

form iuni osoase se face prin doua articulatii sacro-iliace, simfiza pubiana si ligamente sacro-sciatice(sacro-spinos si sacro-

tuberal)

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Bazinul osos

Bazinul mare

Este delimitat de fata interna a aripilor osoase iliace, care formeaza fosele iliace.Sustine organele abdominale si dirijeazafatul spre bazinul mic.re o importanta mai redusa din punct de vedere obstetrical.

!iametrele externe ale bazinului , care se masoara prin pelvimetrie externa cu pelvimetrul, sunt"

!iametrul bitrohanterian (uneste trohan terele drept si stang)" #$-#% cm&

!iametrul bicret (uneste extremitatile crestelor iliace) " %'-% cm

!iametrul bispinos (uneste spinele iliace antero-superioare "%#-% cm

!iametrul antero-posterior (distanta de la marginea superioare a simfizei pubiene pana la apofiza spinoasa a

celei de-a * +a

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Bazinul mic

Se mai numeste bazin obstetrical.re o poarta de intrare + stramtoarea superioara- , o poarta de iesire- stramtoarea

inferioara- , intre ele existand excavatia si stramtoarea mijlocie.

Stramtoarea superioara este un contur osos delimitat de " promotoriu, marginile si fata anterioara a aripoarelor sacrului,

linia nenumita, eminenta ilio-pectinee, marginea superioara a ramurii superioara a ramurii orizontale a pubelui si simfiza

pubiana.

!in cauza proeminentei pe care o face promontoriul, stramtoarea superioara are forma unei inimi de carte de joc, dar

aceasta forma poatevaria.

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Diametrele stramtorii superioare sunt:

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