Hip bone, pubic bone and sacrum form pelvic bone which surrounded by ligaments and tendons. Pregnancy and childbirth can damage the soft tissues including muscles and connective tissue of the pelvis, causing pelvic pain for women after they give birth. The clinically persistent pelvic pain from the postpartum stage to 2 years after childbirth has a reported incidence of 5% to 8.5%. A research involved in 114 participants, half of them reported a current (18%) or resolved (26%) episode of genital or pelvic pain lasting 3 or more months. 9% mothers continued to experience pain that had begun after they last gave birth. Clinical examination showed tenderness in the muscles and ligaments in the low back and the pelvis. Tenderness to deep palpation of the suprapubic and sacroiliac area along the course of the long posterior sacroiliac and sacrotuberous ligaments, as well as a palpable step of the pubic symphysis joint were found indicating signs of local inflammation (erythema, oedema, warmth). Laboratory blood tests are usually normal, with a nonspecific mild elevation of the acute phase reactants (C-reactive protein, erythrocyte sedimentation rate) in a number of cases.
Acupuncture can help reduce postpartum pelvic pain by reducing inflammation.
Paterson LQ et al (2009) J Sex Med 6:215-21
Hansen A et al (2005) Acta Obstet Gynecol Scand 84:170-6