"S" Posture

S-Posture is Characterized by too much thoracic kyphosis combined with excessive lumbar lordosis. This Can be due to the player sticking their tail bone out too much in their setup position or from postural dysfunction (Lower Crossed Syndrome) that is evident even in their standing posture. This recessive lordosis already sets the player into a lumbar extension. This faulty posture and potential deactivation of the core muscle can cause a loss of posture or reverse spine angle during the backswing. This, in turn, puts the lower body off of potion on the downswing and will affect the swings' sequence of motion

We typically find that the player can not extend the hips and thorax spine.

Sawy

A Sway is any excessive lower body lateral movement away from the target during the backswing. The Sway swing characteristic can lead to hip complications due to the simple fact that it directly influences the pelvic side bend and even pelvic tilt. The more a player sways, the fighter their right hip usually becomes, creating an excessive side bend of the pelvis. This is usually accompanied by the excessive anterior tilt of the pelvis as well. Both of these, as discussed earlier, will dramatically reduce the intraarticular space in the hip.

We typically find trail hip internal rotation mobility issues and thorax rotation in the direction of the backswing. 

Slide

A Slide is any excessive lower body lateral movement towards the target during the downswing. Just like a sway did the for the trail hip, the Slide swing characteristic can lead to lead hip complications. The more a player slides, the higher their lead hip usually becomes, creating an excessive side bend of the pelvis. This is usually accompanied by an excessive anterior tilt of the pelvis as well. Both of these, as discussed with the sway, will dramatically reduce the intraarticular space in the hip.  

We typically find lead hip internal mobility limitation and thorax rotation in the directions of the downswing.