Sacroiliac Joint Pain - FYI
When I was pregnant with my daughter, right around 4 months I started dealing with excruciating back pain. Stabbing, often debilitating pain. My midwife referred me to a chiropractor who specialized in care for expectant mothers. Turns out, I had sacroiliac joint dysfunction, caused by my pregnancy. I'd never heard of it before, and it's one of those things that just doesn't get talked about all that much. Sure enough, I'm 4 months along now, and I'm starting to deal with that familiar old pain again. I thought I'd share what I know about it, just in case there are other moms out there who are dealing with this pain, who might not be getting any advice or relief from their doctors.
Stretched-out sacroiliac joints are the most common cause of lower back pain during pregnancy, but it's often misdiagnosed. It's often incorrectly diagnosed as sciatica, or just blamed on the weight of the growing belly.
Location and Function of Sacroiliac (SI) Joint
The sacroiliac joints, or SI joints, join the sacrum (located at the base of the spine) and the ilium of the pelvis. People have one on the left and one on the right, about an inch from either side of the spine at the small of the back.
SI joints are critical weight-bearing joints in the body. They absorb shock while walking, provide stability during the initial "push off" step, and maintain balance by locking and unlocking as weight is transferred from one leg to the other.
Lower Back Pain in Pregnancy
Most women experience some degree of back pain during pregnancy, and assume that it is due to the weight of the baby pulling the back forward.
But it is estimated that 20% of all pregnant women suffer from back pain due to hormonal changes to their SI joints. Pregnant women's bodies release a hormone called relaxin, which loosens the ligaments (including those around the SI joints) in the pelvis in preparation for delivery.
Signs and Symptoms of SI Joint Pain
Women with sacroiliac joint problems describe a sharp, stabbing pain felt in the lower back or hip during weightbearing activities. It may feel like one leg suddenly "goes out" when walking and makes it impossible to go on without limping.
Staying in one position for too long may cause a dull aching sensation. SI joint problems usually appear during the second trimester, are concentrated on one side of the body, and get worse as the day goes on.
Activities that cause sharp back pain include climbing stairs, rolling over in bed, walking (especially across uneven surfaces or downhill,) getting up from a sitting position, sitting down from a standing position, jogging or running (even for just a few seconds,) and getting into and out of the car.
Misdiagnoses of Sacroiliac Dysfunction: Hip Problems and Sciatica
Sacroiliac joint pain can be extremely hard to diagnose, even for health professionals. Since it is often felt in the hips, doctors may end up searching for a nonexistent hip problem.
SI joint pain often radiates through the thigh and leg, causing it to be mistaken for sciatica. True sciatica, however, is very rare in an otherwise healthy pregnant woman with no previous history of back problems.
Practically every motion of the human body involves the sacroiliac joint, which means that a stretched-out SI joint can be extremely debilitating.
Relieving Sacroiliac Pain during Pregnancy
Temporary at-home back pain relief in pregnancy could come from using a heating pad or taking acetaminophen (Tylenol.) Doctors can also prescribe a special sacroiliac belt that holds the pelvis tightly together.
The following self-care lifestyle modifications can also help:
Most pregnancy related SI pain symptoms go away after the pregnancy is over.
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