PELVISPELVISandandRELATEDRELATEDSTRUCTURESSTRUCTURESPELVISPELVISComponents:Components:HipBonesHipBonesSacrumSacrumCoccyxCoccyxLandmarks:Landmarks:a)PelvicInletorSuperiorPelvicAperturea)PelvicInletorSuperiorPelvicApertureBoundaries:SacralPromontoryBoundaries:SacralPromontoryPectinealLinePectinealLineArcuateLineArcuateLineSymphysisPubisSymphysisPubisb)PelvicOutletb)PelvicOutletBoundaries:CoccyxBoundaries:CoccyxIschiopubicRamiIschiopubicRamiSymphysisPubisSymphysisPubisIschialIschialTuberositiesTuberositiesSacrotuberousLigamentsSacrotuberousLigamentsPELVISPELVISDivisions:Divisions:a)GreaterPelvis(FalsePelvis)a)GreaterPelvis(FalsePelvis)-expandedareaabovepelvicinlet-expandedareaabovepelvicinlet-lowermostpartoftheabdominalcavity-lowermostpartoftheabdominalcavityb)LesserPelvis(TruePelvis)b)LesserPelvis(TruePelvis)-narrowedportionbelowpelvicinlet-narrowedportionbelowpelvicinlet-closedbyPELVICDIAPHRAGM-closedbyPELVICDIAPHRAGMPELVISPELVISMeasurements:Measurements:a)TrueConjugateDiametera)TrueConjugateDiameter(ObstetricConjugateDiameter)(ObstetricConjugateDiameter)-anteroposteriormeasurement-anteroposteriormeasurement-superiorborderofsymphysispubis&sacral-superiorborderofsymphysispubis&sacralpromontorypromontoryb)ObliqueDiameterb)ObliqueDiameter-iliopubiceminence&oppositesacroliacjoint-iliopubiceminence&oppositesacroliacjointPELVISPELVISMeasurements:Measurements:c)TransverseDiameterc)TransverseDiameter1)PelvicInlet–between2arcuatelines1)PelvicInlet–between2arcuatelines2)PelvicOutlet–between2ischialspines2)PelvicOutlet–between2ischialspines(smallestdiameter)(smallestdiameter)d)DiagonalConjugateDiameterd)DiagonalConjugateDiameter-lowerborderofsymphysispubis&sacral-lowerborderofsymphysispubis&sacralpromontorypromontory-2cmsmorethanthetrueconjugatediameter-2cmsmorethanthetrueconjugatediameter-estimatedmanuallyduringinternalvaginal-estimatedmanuallyduringinternalvaginalexaminationexaminationPELVICDIAPHRAGMPELVICDIAPHRAGMFunction:MainsupportofthepelvicorgansFunction:MainsupportofthepelvicorgansStructure:Structure:1.LevatorAniMuscle1.LevatorAniMuscle-maintainsintegrityofpelvicfloor-maintainsintegrityofpelvicfloor-maybedamagedduringchildbirth-maybedamagedduringchildbirth-alsomaintainsurinarycontinence-alsomaintainsurinarycontinenceComponents:Components:a)PubococcygeusMusclea)PubococcygeusMuscleAnteriorComponent-surroundsbaseofprostateorAnteriorComponent-surroundsbaseofprostateorlowerlowerendofvaginaendofvaginaPosteriorComponent-fuseswithoppositesideatPosteriorComponent-fuseswithoppositesideatanococcygealligamentanococcygealligamentInferiorComponent(PuborectalisMuscle)–slingsInferiorComponent(PuborectalisMuscle)–slingsaroundanorectaljunctionaroundanorectaljunctionPELVICDIAPHRAGMPELVICDIAPHRAGMComponents:Components:a)PubococcygeusMusclea)PubococcygeusMuscleAnteriorComponentAnteriorComponent-surroundsbaseofprostateorlowerendof-surroundsbaseofprostateorlowerendofvaginavaginaPosteriorComponentPosteriorComponent-fuseswithoppositesideat-fuseswithoppositesideatanococcygealanococcygealligamentligamentInferiorComponent(PuborectalisMuscle)InferiorComponent(PuborectalisMuscle)––slingsaroundanorectaljunctionslingsaroundanorectaljunctionb)IliococcygeusMuscleb)IliococcygeusMuscle2.IschiococcygeusMuscle2.IschiococcygeusMusclePELVICFASCIAPELVICFASCIACharacteristics:Characteristics:-linesthefloor&w...
