This women doesn't appear to be in a semi-sitting position but ....you get the idea.Many hospitals will usually position laboring mothers in a semi-sitting position, with the hospital bed partly reclined. They will also put the mother's legs in stirrups as you would do at an ob/gyn appointment. While many tired mothers report that they are very comfortable birthing in this position, it is not the most effective position for opening the pelvis for birth. However if a woman has the shakes as is common, it can be comforting to have her legs supported by stirrups. Additionally if you have an epidural, it may be hard to get into any other position.
Benefits: Easy for attendant to see birth, not tiring, holds trembling legs still, works well with an epidural.Drawbacks: Doesn't make use of gravity, can increase instance of tears and interventions, back pain.