5. This type of pelvis is in tall women with
narrow hips and in African women.
heart-shaped brim and is quite narrow in
front.
In this pelvis babies lie with their back
against their mothers’ back and may
experience longer labour
6. women take an active role during their
labour and need to squat and move
around as much as possible.
7. INLET
Shape: triangular
Ant. & post. Segment: narrow/
short
Sacrum: SA <90⁰ inclined forward &
straight
CAVITY
Narrow & deep sacrosciatic joint
Convergent : side walls
OUTLET
Prominent : ischial spines
Long and straight : pubic arch
Narrow: subpubic angle
Short: bituberous diameter
FEATURES
8. INLET
Position : OL/ oblique OP
Transverse /oblique diameter of
engagement with delayed & difficult
engagement
CAVITY
Internal rotation :difficult ant
rotation
Doesnt occurs early above
ischial spine,chance of arrest
OULET
Delivery: difficult with increase
chance of perineal injuy
OBSTETRIC
OUTCOME
9. HISTORY
Bad obstetric history- prolonged labour leads to:
*difficult forceps
*CS
*Still birth
*Early neonatal death
*Late neurological symptoms
Evidence of maternal injuries(complete
perineal tear)
PHYSICAL EXAMINATION:
Tall stature
DIAGNOSIS
10. *Dystocia dystrophia syndrome:
Short , Stockily built, Bull neck, Broad shoulders
Short thigh ,Obese, Male distribution of hairs
Delayed menarche
Sub fertile having dys-menorrhea / oligo-menorrhea
/irregular periods
Increase incidence of pre-eclampsia,tendency of
postmaturity ,android type of pelvis
*OP position is common
*During labor inertia is common
11. *tendency of deep transverse arrest or
outlet dystocia....
*Chance of lactation failure
ABDOMINAL EXAMINATION:
Inspection :pendulous abdomen in primi
Obstetrical :
may be malpresentation in primigravidae
non engagement of head :in last 3 to 4 weeks in primigravidae
Pelvimetry: bimanual /radio-pelvimetry/CT/MRI
12. Timing:
Procedure:Empty the bladder, Position:
Aseptic precautions
Features to be noted: Cervix ,
Station
,Engagement if not
then CPD
Elasticity of
perineal muscle
Steps:
CLINICAL PELVIMETRY
