<prompt> Pelvis with only one ala is known as: March 2010Rachitic pelvisNaegeles pelvisScoliotic pelvisRobes pelvis  <response>: Ans. B: Naegeles Pelvis If ala is absent on one side, it is Naegeles pelvis. If alae of both the sides are absent, it is known as Robes pelvis Delivery in both the condition is done by caesarean section. 