Minimally Invasive Approach
Pelvic Nerve Surgery
Helping to restore a life when nerves are the cause.
At ESSI, we use advanced surgical and nerve-sparing techniques to diagnose and treat complex pelvic nerve conditions that cause pain, numbness, weakness, and bowel and bladder symptoms.
Lumbosacral Plexus
Sciatic Nerve
Obturator Nerve
Sacral Plexus
Pudental Nerve
Expert Care
Nerve Preservation
Personalized Treatment
Advanced Technology
Sciatica
Buttock
Pain
Pelvic
Pain
Painful
Sitting
Numbness or Tingling
Leg Weakness
Bowel or Bladder Changes
Groin Pain
UNDERSTAND THE ORIGIN OF YOUR PAIN
Why pelvic nerve surgery?
Pain, weakness, and loss of function can have a devastating impact on daily life.
When pelvic nerve conditions do not improve with conservative care or when a nerve is compressed by a tumor, scar tissue, endometriosis, or vessels, surgery may be the best path to relief.
Our goal is to precisely identify and safely treat the cause while preserving nerve function and quality of life.
Conditions We Treat
Advanced care for endometriosis and related pelvic nerve and vascular conditions
Nerve Schwannomas
Usually benign tumors that grow from the nerve sheath and can compress nearby nerves. In the pelvis, schwannomas may arise from the sciatic nerve, obturator nerve, sacral plexus, or presacral nerves and may cause pain, numbness, weakness, and bowel or bladder symptoms.
Pelvic Endometriosis
Deep infiltrating endometriosis may involve the sciatic nerve or adjacent pelvic nerves, causing cyclical or chronic pain, numbness, weakness, and pain with sitting.
Neurovascular Compression
Veins or arteries may compress or entrap a pelvic nerve and create chronic irritation and neuropathic pain that can improve with careful decompression.
Why ESSI is Different
Dedicated to delivering exceptional care for complex nerve conditions
Our surgeons are fellowship-trained in complex pelvic surgery with advanced minimally invasive expertise.
- Highly specialized, multidisciplinary team
- Minimally invasive & robotic expertise
- Advanced imaging & navigation
- Focus on nerve preservation
- Personalized care for complex patients
- Long-term support
Access Matters
Minimally Invasive Approach
The ESSI Method
- Smaller incisions
- Less tissue disruption
- Magnified 3D visualization
- Precise nerve dissection
- Faster recovery
- Reduced hospital stay
Traditional Open or Posterior Approach
TRADITIONAL METHOD
- Larger incisions and more tissue disruption
- Limited visualization
- Higher risk to nerves and structures
- Longer hospital stay & recovery
- More postoperative pain
- The best approach always depends on the location, size, and complexity of the lesion as well as your anatomy.
MORE INFORMATION ABOUT
Surgical Approach
We use advanced minimally invasive and robotic techniques to access deep pelvic spaces with precision and care—preserving nerves and surrounding structures.
AM Exceptionally Complex CASE OF STUDY
Sciatic Nerve Schwannomas
Sciatic nerve schwannomas within the pelvis can sit deep near the greater sciatic foramen, major vessels, the rectum, the ureter, and the sacral plexus.
Historically, many of these lesions have been approached from behind because they are difficult to reach. For carefully selected intrapelvic tumors, a robotic pelvic approach may allow precise access through anatomical corridors familiar to advanced pelvic surgeons.
This is where extensive experience in pelvic retroperitoneal surgery can make a meaningful difference.
STEP BY STEP
Our Surgical Approach
Every ESSI patient begins with a comprehensive evaluation
that goes well beyond a standard gynecologic intake.
01. Comprehensive Evaluation
Detailed history, exam, and advanced imaging.
02. Multidisciplinary Planning
Team review and personalized surgical plan.
03. Minimally Invasive Surgery
Precise dissection with nerve-sparing techniques.
04. Nerve-Sparing Focus
Protecting function during tumor or lesion removal.
05. Recovery & Follow-Up
Support for healing and long-term wellness.
Focus of Care
- Pain relief and improved function
- Preservation of nerve function
- Shorter recovery time
- Return to activities
- Personalized support and guidance
Results that matter
Our goal is meaningful, lasting relief.
Outcomes vary depending on the condition, surgical approach, and individual factors, but many patients experience significant improvement in pain, function, and quality of life
- Reduced pain and improved mobility
- Improved bladder, bowel, and sexual function
- Personalized recovery and rehabilitation
FRECUENTLY ASKED QUESTIONS ABOUT
Pelvic Nerve Surgery Q&A
Clear answers for rare conditions that are often misunderstood.
Each question opens into patient-friendly detail for website visitors and referring clinicians.
01 What is a schwannoma?
A schwannoma is a usually benign nerve sheath tumor that grows from Schwann cells, the cells that cover and insulate peripheral nerves. In the pelvis, these tumors may arise from the sciatic nerve, obturator nerve, sacral plexus, lumbosacral trunk, or presacral nerves. Even when benign, a schwannoma can cause serious symptoms by compressing or distorting a nerve in a narrow pelvic space.
02 Is a schwannoma cancer?
Most pelvic schwannomas are benign, meaning they are not cancer and do not typically spread. They are generally treated as benign tumors, but MRI review, surgical evaluation, and pathology are important to confirm the diagnosis. “Benign” does not always mean harmless: a benign tumor can still produce severe pain, numbness, weakness, or bladder and bowel symptoms when it affects a critical nerve.
03 What is sciatic endometriosis?
Sciatic endometriosis occurs when deep infiltrating endometriosis involves the sciatic nerve or nearby pelvic nerve pathways. It may cause cyclical sciatica, buttock pain, burning pelvic pain, numbness, weakness, pain with sitting, or symptoms that worsen around menstruation. As the disease progresses, pain can become constant and may be mistaken for spine, hip, or piriformis disorders.
04 What is vascular nerve entrapment?
Vascular nerve entrapment, also called neurovascular compression, occurs when veins or arteries press on a pelvic nerve and create chronic irritation or neuropathic pain. Symptoms may include burning pelvic pain, sciatica-like pain, pudendal symptoms, rectal or perineal pain, pain with sitting, or bladder and bowel complaints. In carefully selected patients, decompression may relieve pressure on the nerve.
05 Why are these conditions so often missed?
Pelvic nerve disorders live at the intersection of gynecology, neurology, orthopedics, urology, colorectal surgery, pain medicine, and spine care. A single pelvic nerve lesion can cause pelvic pain, leg symptoms, bladder changes, bowel symptoms, and sexual pain at the same time. Because imaging findings can be subtle and the deep retroperitoneum is not routinely explored, these disorders are often overlooked or misdiagnosed.
06 What symptoms suggest a pelvic nerve problem?
Symptoms may include sciatica with normal spine imaging, buttock or groin pain, pain with sitting, burning or electric pelvic pain, numbness, tingling, leg weakness, painful intercourse, rectal pain, bladder urgency or retention, bowel dysfunction, and symptoms that flare with the menstrual cycle. The combination of pelvic pain plus neurologic symptoms deserves a deeper look at the pelvic nerves.
07 Why is laparoscopic or robotic surgery often powerful for selected intrapelvic lesions?
For carefully selected lesions located inside the pelvis, laparoscopic or robotic surgery can provide magnified three-dimensional visualization and direct access to deep retroperitoneal spaces around the sciatic nerve, sacral plexus, ureter, vessels, bowel, and rectum. This may reduce tissue disruption compared with larger open or posterior exposures. The best approach always depends on lesion size, location, anatomy, and whether the lesion is intrapelvic or extrapelvic.
08 What makes sciatic nerve schwannomas especially complex?
The intrapelvic sciatic nerve sits near the greater sciatic foramen, major vessels, ureter, rectum, sacral plexus, and pelvic floor structures. Historically, many sciatic nerve tumors have been approached from behind because they are difficult to reach. For selected tumors primarily inside the pelvis, an anterior laparoscopic or robotic pelvic corridor may allow access through anatomical spaces familiar to advanced pelvic surgeons.
09 Does every schwannoma need to be removed?
Not always. Some small, stable, asymptomatic schwannomas can be observed with imaging and clinical follow-up. Surgery may be considered when a tumor causes pain, neurologic symptoms, organ compression, growth on imaging, diagnostic uncertainty, or functional impairment. The decision should be individualized around symptoms, anatomy, risk, and the likelihood of preserving nerve function.
10 What does nerve-sparing mean?
Nerve-sparing surgery means the operation is planned around nerve preservation from the beginning. This may include careful nerve mapping, neurolysis to free a nerve from scar or compression, removal of endometriosis around the nerve, decompression of vascular entrapment, or tumor excision while preserving uninvolved nerve fibers whenever possible. The goal is precision, not aggression.
11 Will surgery cure pelvic nerve pain?
Surgery can be life-changing for carefully selected patients, but no responsible surgeon should promise a cure. Recovery depends on the diagnosis, duration of nerve compression or infiltration, degree of nerve injury, prior surgery, pelvic floor dysfunction, and postoperative rehabilitation. The goal is meaningful improvement by identifying and treating the anatomical source of nerve irritation whenever it can be safely addressed.
Why ESSI is Different
Scientific References
Selected references supporting pelvic nerve endometriosis, neurovascular entrapment, and minimally invasive approaches to pelvic schwannomas.
- Kale A et al. Comparison of isolated sciatic nerve and sacral root endometriosis. J Minim Invasive Gynecol. 2022.
- Roman H et al. Postoperative outcomes after surgery for deep endometriosis involving the sacral roots and sciatic nerve. J Minim Invasive Gynecol. 2021.
- Lemos N et al. Recognition and treatment of endometriosis involving the sacral plexus. 2016.
- Taner U et al. Robot-assisted laparoscopic management of vascular entrapment of the sacral plexus. 2019.
- Lemos N et al. Superior gluteal vein syndrome: an intrapelvic cause of sciatica. 2019.
- Macciò A et al. Interdisciplinary laparoscopic removal of a retroperitoneal pelvic schwannoma. 2019.
- Wang R et al. Laparoscopic excision for intrapelvic schwannoma of the sciatic nerve. 2022.
- Ohsawa M et al. Laparoscopic excision of a retroperitoneal schwannoma. 2019.
- Consales A et al. Sciatic schwannoma spanning the sciatic notch. 2006.