Define obestructed labour.What are the causes of obstructed labour

Casues of obstructed labour

A.Maternal condition :
1.Contracted pelvis
2.Pelvic tumors
  *uterine fibroids
  *ovarian tumors
 *Tumors of rectum,bladder or pelvic bones
3.Abnormalities of uterus or vagina
*stenosis of the cervix or vagina
*Contraction ring of uterus

B.Fetal conditions :
1.large fetus
2.Malpresentation
*Persistent occipito posterior or transverse position
*Mento -Posterior position
*Brow presentation
*Breech presentation
*Shoulder presentation
*Compound presentation
                                                    Ref- D.C Dutta