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Back pain during pregnancy

Back pain during pregnancy

Half of all pregnant women develop moderate to severe back pain.

This pain can be from hormonal changes that alter the flexibility of ligaments and joints in the pelvis, or simply the mechanical problem of the added weight in the pelvis. The pressure on the supporting structures in the pelvis or a marked increase in the lumbar curve (lordosis), strains the supporting muscles. In the nonpregnant state there is practically no motion in the joints of the pelvis, the front of the pelvis and sacroiliac joints. However, during pregnancy, a hormone, relaxin, is produced and it allows increased motion of the pelvic joints, and this causes tension in the relaxed capsule and ligaments. Increased lordosis also increases the weakness of the abdominal muscles and puts greater strain on the muscles near the spine. Active movement such as climbing stairs increases the strain.

Being physically fit before pregnancy may cut your risk of developing back pain. If a pregnancy is in your future, a physical fitness program with aerobic and strengthening exercises is helpful. If you are already pregnant and have back pain, exercises and external supports can be helpful to you.