Comparison of Psoas Major Muscle Thickness During Active Straight Leg Raise in Subjects With and Without Uncontrolled Lumbopelvic rotation

The psoas major (PM) is important for stabilizing lumbopelvic region during active straight leg raising (ASLR). Uncontrolled lumbopelvic rotation (ULPR) frequently occurs during ASLR in subjects with poor lumbo-pelvic stability and may contribute to asymmetric symptoms including pain in lumbopelvic region.

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