<prompt> Deep transverse arrest is most commonly seen in which type of pelvis?Anthropoid pelvisAndroid pelvisGynaecoid pelvisPlatypelloid pelvis  <response>: Deep transverse arrest is most commonly encountered in android pelvis. Deep transverse arrest occurs when the fetal head lies in the transverse diameter, deep in the pelvis and there is a considerable delay. Android pelvis is a pelvis with converging side walls, straight sacrum and a narrow sub pubic arch. 