Pelvic stabilization exercises are a great way to help strengthen the hips, pelvis, and general core area. These should also help for things like SI joint dysfunction, leg length discrepancies, and other pelvic issues.
If you’ve already mastered the beginner pelvic stabilization exercises and moderate pelvic stabilization exercises, these are a great next step. Some of exercises are similar, but adding another component to make it a little harder.
The first three are going to be an advanced clamshell with a bigger range of motion, a side plank leg lift also with a bigger range, and a side plank with a hip drop. These are great for your gluteus medius muscles and core muscles, as well as your hip rotators.
The next few exercises use a Swiss ball or therapy/stability ball and a stability disc. The ball adds a balance component which makes the smaller muscles work much harder as well as your core and glutes.
Finally there is the single leg squat. This time, try to put your other foot out in front of you instead of behind you. This will help keep your pelvis and hips in alignment while doing the exercise.