I have found that with my lower back pain im in need of opening my pelvic muscles not placing pressure on my pelvis by moving the legs back and forth. Instead due to sciatica I stand with a support or something to hold to the side of me and bend my knees comfortably. The legs are slightly apart and ...

Hi there have you tried massage? Perhaps the tendons or nerves need some manipulation or the blood flow is caught up because of this and keeps releasing intermittently?