A sacral stress fracture is a small break in the sacrum. The sacrum is a large triangular bone at base of the spine. The sacrum connects to the pelvis.
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Sacral stress fractures can be caused by repetitive stress or weakened bones.
Sacral stress fractures are most common in young athletes and older women with
osteoporosis. Other factors that may increase your chance of a sacral stress fracture include:
Certain diseases or conditions that result in bone or mineral loss, such as abnormal or
menstrual cyclesHaving gone through menopauseAdolescents with incomplete bone growthPlaying certain sports that may result in collisions or falls, such as gymnastics, football, or other high-impact sportsLong-distance runningWeight-bearing activities, such as weight lifting or military trainingRadiation therapy
hyperparathyroidism, osteopenia, or
The most common symptom of a sacral stress fracture is low back pain. If you have unexplained lower back pain, talk to your doctor. Prompt treatment can prevent the injury from causing further problems.
Other symptoms may include: Pain in hip or pelvisPain in buttocks or groinIncrease in pain during exerciseLower back tenderness Swelling at lower back
You will be asked about your symptoms and medical history. A physical exam will be done. You may be referred to a spine specialist or a surgeon who specializes in bone problems.
Imaging tests evaluate your bones and other structures. These may include: X-raysCT scanMRI scanBone scan
In general, treatment depends on the cause and severity.
Treatment options for a sacral stress fracture include:
Extra support may be needed to protect, support, and keep your back in place while it heals. Supportive steps may include a
Fractures due to
osteoporosis are treated with partial weight bearing.
or other device
will be used for this.
Medications to treat sacral stress fracture include: Over-the-counter medications to reduce inflammation and painPrescription pain relievers
If you have osteoporosis, your doctor will recommend medications that will increase bone density and reduce your risk of another fracture.
Aspirin is not recommended for children with a current or recent viral infection. Check with your doctor before giving your child aspirin.
Fractures caused by physical
rest, but complete rest is rarely required. Ice may be recommended to help with discomfort and swelling.
Gentle massage, heat, and transcutaneous electrical stimulation (TENS)
also be used to
As you recover, you may be referred to physical therapy or rehabilitation for strengthening exercises.
There are some treatments that are not invasive that may help reduce healing time by stimulating bone growth. These treatments include: Electrical stimulation—Electrical and magnetic impulses stimulate enzymes to increase bone cell formation.
Extracorporeal shock wave therapy—High-energy shock waves are passed through body tissues. The waves stimulate growth factors to increase bone cell formation.
Vertebroplasty—Small amounts of bone cement are injected into fracture lines guided by CT scan. It is not known what the long-term side effects of the cement are. Because of this, vertebroplasty is used on a limited basis.
If other treatment does not work, surgery may be required. Surgery is generally indicated if the break is unstable, there are nerve problems, or the sacrum is not properly aligned. Bones are reconnected and held in place with screws or a plate.
To help reduce your chance of a sacral stress fracture, take these steps: Make gradual changes in intensity when exercising.Use proper equipment and technique when playing sports.Talk to your doctor about how to prevent osteoporosis.
To help reduce falling hazards at work and home, take these steps: Clean spills and slippery areas right away.Remove tripping hazards such as loose cords, rugs, and clutter.Use non-slip mats in the bathtub and shower.Install grab bars next to the toilet and in the shower or tub.Put in handrails on both sides of stairways.Walk only in well-lit rooms, stairs, and halls.Keep flashlights on hand in case of a power outage.
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http://orthoinfo.aaos.org/topic.cfm?topic=A00053. Updated October 2007. Accessed August 5, 2015.
Stress fractures. American Academy of Orthopaedic Surgeons Ortho Info website. Available at:
http://orthoinfo.aaos.org/topic.cfm?topic=A00112. Updated October 2007. Accessed August 5, 2015.
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Last reviewed August 2015 by Warren A. Bodine, DO, CAQSM
Please be aware that this information is provided to supplement the care provided by your physician. It is neither intended nor implied to be a substitute for professional medical advice. CALL YOUR HEALTHCARE PROVIDER IMMEDIATELY IF YOU THINK YOU MAY HAVE A MEDICAL EMERGENCY. Always seek the advice of your physician or other qualified health provider prior to starting any new treatment or with any questions you may have regarding a medical condition.
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