Ortho Dx: Low back, pelvic pain following childbirth

A patient, aged 45 years, presented to the office with a 5 year history of lower back and pelvic pain. The pain started a few months after childbirth.

The pain increased and the patient reported feeling muscle weakness in the groin while walking. She denied any numbness or tingling in the lower extremities.

On exam, compression of the pelvis ...