Robotic Perforating
Cutaneous Nerve
Decompression
Beyond Unexplained Buttock Pain—Identifying a Hidden Nerve Source
Chronic lower buttock pain is often attributed to musculoskeletal conditions or generalized sciatic nerve irritation. However, in many patients, the true source of pain originates from the perforating cutaneous nerve—a small but clinically significant sensory nerve that is frequently overlooked.
At our center, we specialize in robotic-assisted intrapelvic evaluation and decompression of the perforating cutaneous nerve, allowing precise identification and treatment of pathology at its origin and along its deep pelvic course.
What Is the Perforating Cutaneous Nerve?
The perforating cutaneous nerve arises from the sacral plexus (S2–S3) and travels through or around the sacrotuberous ligament, exiting into the lower gluteal region.
It provides sensation to:
- The inferior gluteal (lower buttock) region
- The skin overlying the lower aspect of the buttock
Due to its deep origin and small size, this nerve is rarely evaluated in standard clinical assessments.
Symptoms
Patients with perforating cutaneous nerve involvement may experience:
- Localized pain in the lower buttock region
- Burning, sharp, or aching discomfort
- Pain worsened by sitting
- Focal tenderness near the inferior gluteal fold
- Overlap with sciatic or posterior femoral cutaneous nerve symptoms
Because of symptom overlap, this condition is often misdiagnosed or untreated.
Why This Happens
Common causes include:
- Pelvic neuroinflammation
- Compression at the level of the sacrotuberous ligament
- Fibrosis or adhesions in the greater sciatic region
- Inflammatory adipose tissue encasing the nerve
- Extension of endometriosis into the deep pelvic sidewall
In many cases, this nerve is involved as part of a broader lumbosacral plexus or deep gluteal syndrome.
Why Standard Treatments Often Fail
These treatments frequently fail because they:
- Do not identify the specific nerve involved
- Cannot access the nerve at its deep pelvic origin
- Focus on symptoms rather than underlying pathology
External surgical approaches are limited and may not provide adequate visualization of the nerve’s origin or surrounding disease.
Our Surgical Approach
We utilize a robotic intrapelvic approach, allowing access to the perforating cutaneous nerve at its origin within the sacral plexus and greater sciatic region. This technique provides:
- Safe entry into the retroperitoneal space
- Identification of the sacral plexus branches
- Visualization of the nerve as it courses toward the sacrotuberous ligament
- Precise decompression under high-definition magnification
Comprehensive Access to the
Greater Sciatic Region
A key advantage of this approach is the ability to achieve direct access and excellent visualization of the entire greater sciatic region, where the perforating cutaneous nerve originates and travels. This allows the surgeon to:
- Identify the exact origin and course of the nerve
- Detect fibrosis, adhesions, or inflammatory nodules
- Perform targeted neurolysis with minimal disruption to surrounding structures
Importantly, this approach enables simultaneous evaluation and treatment of adjacent neural structures, including:
- Posterior femoral cutaneous nerve
- Sciatic nerve
- Pudendal nerve
- Inferior gluteal nerve
- Superior gluteal nerve
In addition, the approach provides visibility to:
- The broader lumbosacral plexus
- Deep pelvic sidewall pathology
- Endometriosis or inflammatory disease affecting the region
A Truly Comprehensive Neuroanatomical Approach
Unlike traditional approaches that focus on a single nerve or symptom, this technique allows:
What to Expect
Minimally invasive robotic procedure
High precision with minimal blood loss
Typically outpatient or short hospital stay
Procedure duration varies based on complexity
Recovery & Nerve Healing
Recovery is gradual:
- Early symptom improvement may begin within weeks
- Continued recovery over several months
- Adjunct therapies may support nerve healing
Due to the minimally invasive nature of the approach, patients typically experience:
- Less postoperative pain
- Faster recovery compared to traditional approaches
Who is a candidate?
You may be a candidate if you have:
- Persistent lower buttock pain
- Pain worsened by sitting
- Focal tenderness in the inferior gluteal region
- Symptoms not explained by spine imaging
- Failure of conservative treatment
The Key Difference
This nerve is often overlooked in traditional evaluation.
Our approach allows us to identify and treat even the smallest contributors to complex pelvic and gluteal pain.