Sacral fracture

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Sacral fractures are breaks or cracks in the sacrum, the large, triangular bone at the base of the spine that forms part of the pelvis. These fractures are significant due to their potential impact on the surrounding nervous system and the stability of the pelvis. Sacral fractures can result from a variety of causes, including trauma, osteoporosis, and stress injuries. They are classified based on their location in the sacrum and whether they involve the sacral foramina (holes through which nerves and blood vessels pass) or affect the stability of the pelvis.

Causes and Risk Factors

Sacral fractures often occur due to high-energy trauma such as falls from a height, motor vehicle accidents, or direct blows to the area. In the elderly or those with weakened bones, such as individuals with osteoporosis, lower-energy falls can also result in sacral fractures. Athletes, particularly runners or those involved in sports requiring repetitive stress on the pelvis, may develop stress fractures in the sacrum.

Symptoms

Symptoms of a sacral fracture can vary but typically include pain in the lower back, buttocks, or pelvic area. The pain may worsen with standing or walking and may improve when lying down. In some cases, there may be numbness, tingling, or weakness in the legs if the fracture affects the sacral nerves.

Diagnosis

Diagnosis of a sacral fracture begins with a medical history and physical examination, followed by imaging tests. X-rays of the pelvis are usually the first step, but sacral fractures can be difficult to see on X-rays. A computed tomography (CT) scan or magnetic resonance imaging (MRI) may be necessary to confirm the diagnosis and assess the extent of the fracture.

Treatment

Treatment for sacral fractures depends on the severity of the fracture and whether it is stable or unstable. Stable fractures, where the pelvis remains stable and the fracture does not involve significant displacement, can often be treated non-surgically. This treatment may include pain management, rest, and physical therapy. Unstable fractures, which involve displacement or are associated with other pelvic fractures, may require surgical intervention to realign and stabilize the bones.

Complications

Complications from sacral fractures can include chronic pain, nerve damage, and pelvic instability. In severe cases, there may be bowel or bladder dysfunction if the nerves controlling these functions are affected.

Prevention

Preventing sacral fractures involves minimizing the risk of falls and trauma, particularly in those with osteoporosis or other conditions that weaken the bones. This can include measures such as using assistive devices for walking, ensuring living spaces are free of tripping hazards, and managing bone health through diet and medication.

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