Sacral fractures in the lower spine causes symptoms and treatment

A sacral fracture is one of the injuries that can cause severe pain and have a significant impact on a person's mobility because it affects an important area at the base of the spine that connects the lower back to the pelvis. While some people may assume the pain is simply due to muscle strain or a minor back problem, the reality is that a sacral fracture can sometimes be a serious injury that requires accurate diagnosis and prompt treatment to prevent complications that may affect movement or the nerves.

The severity of this injury varies from one case to another. Some fractures are relatively simple and can heal with rest and conservative treatment, while others are more complex and may require specialized medical care or even surgical intervention. Understanding the causes, symptoms, and treatment options is essential for managing the condition properly from the outset and promoting a faster recovery.

In this Delili Medical article, we will discuss everything you need to know about sacral fractures, including their causes, symptoms, diagnosis, treatment options, and important tips for managing the condition effectively.

What Are Sacral Fractures?

Sacral fractures are breaks in the sacrum, a triangular-shaped bone located at the base of the spine that connects the spinal column to the pelvic bones. These fractures typically heal within 8 to 12 weeks, although treatment varies depending on the severity of the injury. Stable fractures may be managed conservatively with rest and the use of walking aids, while unstable fractures may require surgical intervention to stabilize the bones.

Is a Sacral Fracture Serious?

The severity of a sacral fracture depends on the type and extent of the injury.

Simple fractures are often stable and tend to improve with appropriate treatment and time. However, unstable fractures or those associated with nerve damage can be more serious and may require urgent medical attention.

Can a Sacral Fracture Cause Paralysis?

A sacral fracture rarely causes paralysis. However, it may lead to weakness or neurological symptoms if the surrounding nerves are compressed or injured. Complete paralysis is extremely uncommon and generally occurs only in severe and complex trauma cases.

Can You Walk with a Sacral Fracture?

In some mild cases, patients may still be able to walk, although with discomfort and difficulty.

In many cases, however, reducing physical activity and using crutches or other mobility aids is recommended to prevent further injury and promote healing.

What Is the Best Sleeping Position for a Sacral Fracture?

To minimize discomfort and reduce pressure on the lower back and pelvis, the following sleeping positions are generally recommended:

Sleeping on your back or side
Placing a pillow under the knees when lying on your back
Avoiding excessively hard or uncomfortable sleeping surfaces

Types of Sacral Fractures (Sacrum Fractures of the Lower Spine)

Sacral fractures vary in pattern, severity, and cause. As a result, they are classified into several types to help physicians determine the most appropriate treatment plan and recovery strategy.

1. Longitudinal Fractures

The fracture extends vertically along the sacrum.
Commonly caused by high-impact trauma or severe falls.
May affect pelvic stability in some cases.

2. Transverse Fractures

The fracture runs horizontally across the sacrum.
Can occur in either the upper or lower portion of the bone.
May sometimes be associated with nerve injuries.

3. Sacral Zone Fractures (Denis Classification)

The sacrum is divided into three anatomical zones:

Zone 1

Located on the outer side of the sacrum.
Generally considered the least severe type.

Zone 2

Passes near the nerve foramina.
May cause pain, numbness, or neurological symptoms.

Zone 3

Located close to the spinal canal.
Considered the most serious type because it may affect bladder and bowel function.

4. Stable Fractures

The bones remain properly aligned and stable.
Pain is present, but mobility is often relatively preserved.
Usually treated conservatively without surgery.

5. Unstable Fractures

Associated with loss of pelvic stability.
Cause severe pain and significant difficulty with movement.
Frequently require surgical treatment.

6. Stress Fractures

Develop gradually due to repetitive stress or overuse.
Common among athletes and individuals exposed to excessive physical strain.
Pain typically starts mildly and worsens over time.

7. Insufficiency Fractures

Result from weakened bones, such as those affected by osteoporosis.
Common in older adults and individuals with calcium or vitamin D deficiency.
May occur even without a significant injury or fall.

Causes of Sacral Fractures (Sacrum Fractures of the Lower Spine)

A sacral fracture is an injury affecting the sacrum, the triangular bone located at the base of the spine just above the pelvis. This type of injury can cause significant pain and may interfere with mobility, sitting, and daily activities.

The most common causes of sacral fractures include:

1. Direct Falls

Direct falls are among the most common causes of sacral fractures, particularly in the following situations:

Falling directly onto the lower back or buttocks
Falling from a height
Slipping in the bathroom or on slippery surfaces

2. Motor Vehicle Accidents

High-impact collisions can place significant force on the pelvis and lower spine, potentially resulting in a fracture of the sacrum.

3. Osteoporosis

The risk of sacral fractures increases in older adults and individuals with calcium or vitamin D deficiency because:

Bones become weaker and more fragile
Fractures may occur even after minor falls or simple movements

4. Severe Sports Injuries

Examples include:

Contact sports such as football and wrestling
Forceful jumps or sudden, high-impact movements

5. Tumors or Chronic Medical Conditions

Although less common, sacral fractures may result from:

Bone tumors
Certain chronic infections or medical conditions that weaken the bones

6. Repetitive Stress (Stress Fractures)

Stress fractures develop as a result of repeated strain on the bones, such as:

Long-distance running
Intensive athletic training without adequate recovery periods
Continuous stress placed on the pelvic region

Symptoms of Sacral Fractures (Sacrum Fractures of the Lower Spine)

The symptoms of a sacral fracture vary depending on the severity and cause of the injury. Some cases may present with mild symptoms, while others can be more severe. However, several common symptoms are frequently reported by patients.

1. Severe Pain in the Lower Back or Pelvic Region

The pain may be sharp or persistent.
It often worsens with sitting, standing, or movement.
In some cases, the exact source of the pain may be difficult to identify.

2. Difficulty Moving or Walking

Patients may experience significant discomfort when attempting to move.
Walking may become slow, difficult, or severely limited.

3. Pain While Sitting

Sitting on a chair or bed may become noticeably painful.
The pain often improves when lying down.

4. Swelling or Bruising in the Lower Back or Pelvic Area

Mild swelling may develop around the injured area.
Skin discoloration, including blue or purple bruising, may occur following the injury.

5. Numbness or Weakness in the Legs (in Some Cases)

Tingling or numbness may occur in the lower extremities.
Muscle weakness can develop if nearby nerves are affected.

6. Bladder or Bowel Dysfunction (Rare Cases)

Difficulty controlling urination or bowel movements may occur.
This is considered a medical emergency and requires immediate medical attention.

7. Increased Pain with Coughing or Sneezing

Pain may worsen due to increased pressure on the pelvis and lower spine during coughing or sneezing.

Diagnosis of Sacral Fractures (Sacrum Fractures of the Lower Spine)

Diagnosing a sacral fracture is an important step, as its symptoms can resemble those of lower back pain or sciatica. Therefore, physicians rely on both a thorough clinical examination and imaging studies to establish an accurate diagnosis.

1. Medical History and Clinical Examination

The physician will first obtain a detailed medical history, including:

A recent fall or traumatic accident
The onset of pain (sudden or gradual)
The severity and location of the pain

A physical examination is then performed, which may include:

Palpation of the lower back and pelvic region
Assessment of mobility and walking ability
Evaluation of sensation and muscle strength in the legs

2. X-ray Imaging

Usually the first imaging test performed
May reveal obvious fractures
However, small or subtle fractures can sometimes be missed

3. Computed Tomography (CT) Scan

Considered one of the most accurate methods for identifying the location and pattern of the fracture
Helps determine whether the fracture is stable or unstable
Essential when planning treatment or considering surgical intervention

4. Magnetic Resonance Imaging (MRI)

Used to evaluate nerves and surrounding soft tissues
Can detect nerve compression or spinal canal involvement
Particularly useful when severe pain is present despite inconclusive findings on standard X-rays

5. Neurological Assessment

Additional neurological evaluations may include:

Testing sensation in the lower extremities
Assessing muscle strength
Evaluating bladder and bowel function

Complications of Sacral Fractures (Sacrum Fractures of the Lower Spine)

Although many sacral fractures heal successfully with appropriate treatment, complications can occur, particularly in severe injuries or when treatment is delayed.

1. Chronic Lower Back and Pelvic Pain

Pain may persist even after the fracture has healed
In some cases, it develops into chronic pain that affects sitting, walking, and daily activities

2. Reduced Mobility and Walking Difficulties

Stiffness in the lower back
Weakness of the muscles surrounding the pelvis
Difficulty returning to normal daily activities

3. Nerve Injury

If the fracture affects nearby nerve pathways, patients may experience:

Numbness or loss of sensation in the legs
Weakness of the lower limbs
Radiating pain extending from the lower back into the legs, similar to sciatica

4. Bladder or Bowel Dysfunction

One of the most serious complications
Occurs when the nerves controlling bladder and bowel function are affected
Requires urgent medical evaluation and treatment

5. Pelvic Instability

The fracture may compromise the stability of the pelvis
This can cause pain during movement or when bearing weight on the legs

6. Malunion

The bone heals in an abnormal position
May result in mild deformity or pelvic asymmetry
Can contribute to chronic pain and functional limitations later on

7. Blood Clots

Reduced mobility after injury may increase the risk of deep vein thrombosis (DVT)
In rare cases, blood clots can travel to the lungs and become life-threatening

8. General Deconditioning Due to Immobility

Loss of muscle strength and physical fitness
Joint stiffness
Weight gain and other health problems associated with prolonged inactivity

Medical Treatment of Sacral Fractures (Sacrum Fractures of the Lower Spine)

Medication therapy aims to relieve pain, reduce inflammation, prevent complications, and support bone healing. It is typically part of a comprehensive treatment plan that may also include rest, physical therapy, and, in some cases, surgery.

1. Pain Relievers

Pain management is usually the first step in treatment.

Paracetamol (Acetaminophen)

Commonly used for mild to moderate pain
Generally well tolerated and relatively gentle on the stomach
May be used for short- or long-term symptom control under medical guidance

Nonsteroidal Anti-Inflammatory Drugs (NSAIDs)

Examples include ibuprofen and diclofenac.

Help reduce both pain and inflammation
Should be used cautiously in patients with stomach, kidney, or certain cardiovascular conditions

2. Stronger Pain Medications

Reserved for severe pain that does not respond to standard pain relievers.

Examples include:

Tramadol
Certain opioid medications

These medications:

Are usually prescribed for a short period
Require close medical supervision
May cause side effects such as dizziness, drowsiness, or dependence with prolonged use

3. Muscle Relaxants

Help relieve muscle spasms in the lower back
May reduce pain associated with muscle tension
Typically prescribed for short-term use alongside pain medication

4. Medications That Support Bone Health and Healing

These are particularly important in older adults and patients with osteoporosis.

Calcium and Vitamin D

Support bone strength
Promote the healing process

Osteoporosis Medications (Such as Bisphosphonates)

Help reduce bone loss
Lower the risk of future fractures
Often prescribed as part of long-term osteoporosis management under medical supervision

5. Blood Thinner Medications

May be prescribed to reduce the risk of blood clots caused by prolonged immobility
Particularly important for older adults and patients with unstable fractures

6. Medications for Nerve Pain

When nerve compression or neurological symptoms such as numbness, tingling, or radiating leg pain are present:

Neuropathic pain medications may be prescribed
Examples include gabapentin in selected cases
These medications can help reduce nerve-related pain and improve patient comfort

Surgical Treatment of Sacral Fractures (Sacrum Fractures of the Lower Spine): Types and Procedure Steps

Surgery is an important treatment option for sacral fractures and is typically recommended when the fracture is unstable, when there is nerve compression, when severe pain does not respond to conservative treatment, or when the fracture fails to heal properly. The primary goals of surgery are to stabilize the bones, protect the nerves, relieve pain, and restore mobility.

Types of Surgery for Sacral Fractures

1. Sacroiliac Screw Fixation

This is one of the most commonly performed surgical procedures for sacral fractures.

Procedure Concept

The sacrum is stabilized to the pelvic bones using specialized metal screws.

Indications

Unstable sacral fractures
Pelvic injuries associated with sacral fractures

Procedure Steps

The patient undergoes general anesthesia.
Intraoperative fluoroscopy (C-arm imaging) is used to accurately identify the fracture site.
Long screws are inserted through the pelvis into the sacrum.
Proper fixation is confirmed, and the surgical incision is closed.

Advantages

Minimally invasive compared to open surgery
Reduced blood loss
Faster recovery time

2. Plate and Screw Fixation

Procedure Concept

Metal plates and screws are used to stabilize the fractured bones.

Indications

Complex or multiple fractures
Significant pelvic instability

Procedure Steps

General anesthesia is administered.
A surgical incision is made to access the sacral region.
The fractured bones are repositioned into proper alignment (fracture reduction).
Plates are secured using screws.
The wound is closed, and a surgical drain may be placed if necessary.

3. External Fixation

Procedure Concept

An external metal frame is used to stabilize the pelvis.

Indications

Emergency situations
Severe fractures associated with multiple injuries
Medically unstable patients

Procedure Steps

Pins are inserted into the pelvic or femoral bones.
The pins are connected to external rods outside the body.
The pelvis is adjusted and stabilized to support fracture healing.

Advantages

Rapid and effective in emergency settings
Helps reduce bleeding

Note

External fixation is often used as a temporary measure before definitive internal fixation is performed.

4. Decompression Surgery

Procedure Concept

The goal is to relieve pressure on the nerves or spinal canal.

Indications

Severe numbness or weakness in the legs
Loss of bladder or bowel control
Evidence of significant nerve compression

Procedure Steps

General anesthesia is administered.
A posterior incision is made over the sacral area.
Bone fragments or soft tissues compressing the nerves are removed.
Internal fixation may be performed simultaneously if needed.

5. Lumbopelvic Fixation

Procedure Concept

The lumbar spine is connected to the pelvis using strong rods and screws.

Indications

Severe or highly fragmented fractures
Complete loss of stability in the sacral and pelvic region

Procedure Steps

General anesthesia is administered.
Screws are placed into the lumbar vertebrae.
Additional screws are inserted into the pelvic bones.
Rods are connected to create a stable fixation construct.

Advantages

Provides the strongest form of stabilization
Reserved for the most complex and severe injuries

Recovery After Surgery

Regardless of the surgical technique used, postoperative care generally includes:

Relative rest during the initial recovery period
Use of pain relievers and anti-inflammatory medications as prescribed
Gradual initiation of physical therapy
Avoiding weight-bearing activities for a period determined by the surgeon
Follow-up imaging studies to monitor fracture healing

Tips for Managing Sacral Fractures

1. Rest and Activity Modification

Limit movement during the early stages of recovery.
Avoid prolonged sitting or standing.
Change positions slowly and seek assistance when necessary.

2. Sleeping and Sitting Positions

Sleep on a medium-firm mattress.
Sleep on the back or side as recommended by your physician.
Place a pillow beneath the knees when lying on your back to reduce pressure.
Use a medical cushion while sitting to minimize stress on the sacrum.

3. Safe Mobility

Begin walking only after receiving medical clearance.
Use crutches or a walker if recommended.
Avoid bending, twisting, or sudden movements.
Refrain from lifting heavy objects.

4. Adherence to Medications

Take pain medications as prescribed.
Continue calcium and vitamin D supplements if recommended.
Do not stop medications without consulting your healthcare provider.

5. Nutrition to Support Healing

Consume calcium-rich foods.
Maintain adequate vitamin D levels through sunlight exposure or supplements.
Eat sufficient protein to support bone repair.
Stay well hydrated.

6. Preventing Complications

Move the legs regularly to reduce the risk of blood clots.
Monitor for unusual swelling or worsening pain.
Pay attention to changes in sensation or muscle strength.
Seek medical attention if bladder or bowel problems develop.

7. Physical Therapy

Begin strengthening exercises once the fracture is stable.
Focus on improving balance and mobility.
Gradually increase activity levels under professional supervision.

8. Avoid Common Mistakes

Do not ignore persistent pain.
Avoid returning to normal activities too quickly.
Limit sitting on hard surfaces for extended periods.
Do not rely solely on pain medications without ongoing medical follow-up.

Recovery Time for Sacral Fractures (Sacrum Fractures of the Lower Spine)

Recovery time varies depending on the type and severity of the fracture, as well as whether treatment is conservative or surgical.

1. Simple or Stable Fractures (Non-Surgical)

Recovery Time: Approximately 6–12 Weeks

Pain typically begins to improve within the first 2–4 weeks.
Mobility gradually returns with appropriate rest and treatment.

2. Stress Fractures or Osteoporotic Fractures

Recovery Time: Approximately 8–12 Weeks or Longer

Healing may take longer when bone quality is poor.
Treating the underlying condition, such as osteoporosis, is essential to prevent recurrence.

3. Unstable Fractures Requiring Surgery

Recovery Time: Approximately 3–6 Months

Pain often improves more rapidly after surgical stabilization.
Complete bone healing and return to full activity generally require additional time and rehabilitation.

4. Complex Fractures Associated with Nerve Injury

Recovery Time: Approximately 6–12 Months or Longer

Neurological recovery, including improvement in numbness or weakness, may occur more slowly than bone healing.
These cases require close monitoring and intensive rehabilitation.