Sacral Plexopathy: Symptoms, Causes, Diagnosis and Treatment

Written by Medicover Team and Medically Reviewed by Dr Krishna Haskar Dhanyamraju , Neurologists

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1. Causes 2. Find a Doctor 3. Diagnosis 4. Treatment 5. FAQs

Sacral plexopathy is a neurological disorder caused by damage to the sacral plexus, a network of nerves located in the lower back and pelvis that controls movement and sensation in the buttocks, legs, bladder, bowel, and reproductive organs. Damage to these nerves can interfere with normal muscle function and sensation, resulting in pain, weakness, numbness, and difficulties with bladder or bowel control.

Sacral plexopathy may develop due to trauma, pelvic tumors, diabetes, radiation therapy, infections, inflammatory disorders, or compression of the nerves. The severity of symptoms depends on the extent of nerve involvement. Early diagnosis and treatment of the underlying cause can help relieve symptoms, improve function, and reduce the risk of permanent nerve damage.

What Are the Types of Sacral Plexopathy?

Sacral plexopathy can be classified according to its underlying cause.

Traumatic Sacral Plexopathy: Develops after pelvic fractures, accidents, childbirth injuries, or surgical complications affecting the sacral plexus.
Compressional Sacral Plexopathy: Results from tumors, cysts, enlarged blood vessels, or prolonged pressure on the sacral nerves.
Radiation-Induced Sacral Plexopathy: Occurs as a delayed complication of radiation therapy used to treat pelvic cancers.
Diabetic Sacral Plexopathy: Caused by long-term diabetes damaging the nerves that form the sacral plexus.
Inflammatory or Infectious Sacral Plexopathy: Develops due to autoimmune disorders or infections affecting the peripheral nerves.

What Are the Symptoms of Sacral Plexopathy?

Symptoms vary depending on which nerves are affected and the severity of the nerve damage. They may develop suddenly after trauma or gradually in chronic conditions.

Pain in the lower back, buttocks, pelvis, or legs
Leg or hip weakness
Numbness or tingling in the buttocks, legs, or feet
Difficulty walking or climbing stairs
Loss of balance or coordination
Reduced sensation in the lower limbs
Bowel or bladder dysfunction, including incontinence or urinary retention
Sexual dysfunction
Muscle wasting in severe or long-standing cases

What Causes Sacral Plexopathy?

Sacral plexopathy develops when the sacral plexus nerves become damaged or compressed.

Trauma: Pelvic fractures, falls, motor vehicle accidents, or surgical injuries.
Pelvic tumors: Benign or malignant growths compressing the sacral nerves.
Radiation therapy: Delayed nerve injury following treatment for pelvic cancers.
Diabetes: Chronic high blood sugar causing diabetic neuropathy.
Inflammatory disorders: Autoimmune diseases affecting peripheral nerves.
Infections: Viral, bacterial, or fungal infections involving the sacral plexus.
Pelvic hematoma or abscess: Collections of blood or infection pressing on the nerves.

When to See a Doctor for Sacral Plexopathy?

Medical evaluation by a Neurologist or Physical Medicine and Rehabilitation Specialist is recommended if you experience persistent lower back or pelvic pain, leg weakness, numbness, difficulty walking, or problems with bladder or bowel control. Early diagnosis helps identify the underlying cause and improves the chances of preventing permanent nerve damage.

Consult a healthcare provider if you have:

Persistent pain in the pelvis, buttocks, or legs
Progressive weakness or numbness in one or both legs
Difficulty walking or maintaining balance
Changes in bladder or bowel function

Seek emergency medical care immediately if you develop:

Sudden inability to walk
Complete loss of bladder or bowel control
Rapidly worsening leg weakness or numbness
Severe pelvic pain after trauma

Prompt neurological evaluation can help prevent permanent disability and improve long-term recovery.

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How Is Sacral Plexopathy Diagnosed?

Diagnosis combines a detailed neurological examination with imaging and nerve function tests to determine the cause and severity of nerve damage.

Medical history and physical examination
Complete neurological assessment
Electromyography (EMG)
Nerve conduction studies
MRI of the pelvis and lumbosacral spine
CT scan when bone injury is suspected
Blood tests to identify diabetes, autoimmune diseases, or infections
Lumbar puncture in selected cases when inflammatory or infectious disorders are suspected

How Is Sacral Plexopathy Treated?

Treatment focuses on addressing the underlying cause, relieving symptoms, and restoring nerve function whenever possible.

Pain Management

Pain-relieving medications
Anti-inflammatory medicines
Neuropathic pain medications
Nerve block injections when appropriate

Physical Rehabilitation

Physical therapy to improve strength and mobility
Stretching and balance exercises
Occupational therapy for daily activities
Walking aids when necessary

Treating the Underlying Cause

Diabetes management
Treatment of infections
Management of autoimmune disorders
Treatment of pelvic tumors or cysts

Surgery

Removal of tumors compressing the nerves
Repair of traumatic nerve injuries when feasible
Decompression procedures in selected patients

Lifestyle Measures

Maintaining a healthy weight
Regular exercise as advised by a healthcare professional
Avoiding prolonged sitting when possible
Smoking cessation to improve nerve health

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What Are the Risk Factors for Sacral Plexopathy?

Several conditions increase the likelihood of developing sacral plexopathy.

Diabetes mellitus
Pelvic trauma or fractures
Pelvic or spinal surgery
Radiation therapy for pelvic cancers
Pelvic tumors or cysts
Autoimmune disorders
Chronic infections involving the pelvis or spine

What Are the Complications of Sacral Plexopathy?

If left untreated, sacral plexopathy may lead to permanent neurological problems and reduced quality of life.

Chronic neuropathic pain
Permanent muscle weakness
Difficulty walking
Muscle wasting
Bladder dysfunction
Bowel incontinence
Sexual dysfunction
Permanent nerve damage

Can Sacral Plexopathy Be Prevented?

Not all cases can be prevented. However, maintaining good control of diabetes, preventing pelvic injuries, using proper body mechanics, maintaining a healthy weight, treating infections promptly, and attending regular medical follow-up after pelvic surgery or radiation therapy may reduce the risk of developing sacral plexopathy.

Living With Sacral Plexopathy

Living with sacral plexopathy often requires ongoing rehabilitation and regular follow-up with neurologists, rehabilitation specialists, and physical therapists. Many individuals improve with appropriate treatment, physical therapy, pain management, and treatment of the underlying cause. Staying physically active within recommended limits, using assistive devices when necessary, and managing chronic medical conditions can help maintain mobility, independence, and overall quality of life.

Frequently Asked Questions

1. What are the recommended do's and don'ts for managing Sacral Plexopathy?

Do's: Follow physical therapy, manage pain with medication, and use supportive devices if needed. Treat underlying causes like diabetes or trauma. Do n'ts: Avoid prolonged sitting or pressure on affected areas, excessive physical strain, or ignoring symptoms, as this can worsen nerve damage.

2. Can Sacral Plexopathy lead to other health issues?

Yes, it can cause chronic pain, weakness, bladder and bowel dysfunction, and mobility issues. If untreated, nerve damage may worsen, leading to complications like muscle atrophy or neuropathic pain, significantly affecting quality of life.

3. What is a mnemonic to remember the sacral plexus?

A helpful mnemonic is "Some Irish Sailors Pester Polly" for major branches: Sciatic, Inferior gluteal, Superior gluteal, Posterior femoral cutaneous, and Pudendal nerves.

4. What are the major nerves of the sacral plexus?

The sacral plexus consists of the sciatic, superior gluteal, inferior gluteal, posterior femoral cutaneous, and pudendal nerves. These nerves control lower limb movement and sensation, as well as pelvic organ function.

5. What are common problems associated with the sacral plexus?

Issues include sacral plexopathy, nerve compression, trauma, tumors, or diabetic neuropathy. Symptoms range from pain and weakness in the lower limbs to bowel, bladder, and sexual dysfunction, depending on the affected nerves.