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Minimally Invasive Spine Surgery In Mumbai
Keyhole MIS-TLIF, Microdiscectomy, and Navigation-Guided Percutaneous Fixation for Faster Recovery and Less Pain at Shree Hospitals
Minimally invasive spine surgery (MISS) achieves the same surgical goals as open spine surgery - decompressing nerves, stabilising the spine, correcting deformity - through small incisions using specialised tubular retractors, endoscopes, and navigation-guided percutaneous instruments that avoid the muscle damage caused by conventional open surgery. At Shree Hospitals, our specialist spine surgeons perform the full range of MISS procedures: microdiscectomy for lumbar disc herniation, MIS-TLIF (minimally invasive transforaminal lumbar interbody fusion) for spondylolisthesis and degenerative disc disease, XLIF/LLIF (lateral lumbar interbody fusion), OLIF (oblique lumbar interbody fusion), and navigation-guided percutaneous pedicle screw fixation - delivering faster recovery, less blood loss, shorter hospital stays, and lower infection rates compared with conventional open surgery.
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Quick facts
Procedures: Microdiscectomy, MIS-TLIF, XLIF, OLIF, Percutaneous Pedicle Screw Fixation
Conditions treated: Disc Herniation, Spondylolisthesis, Lumbar Stenosis, Degenerative Disc Disease
Anaesthesia: General Anaesthesia with Intraoperative Neuromonitoring
Hospital stay: 1 to 3 days (vs 5 to 7 days for open surgery)
Key technology: O-arm Navigation, Tubular Retractors, Intraoperative Neuromonitoring (SSEP/MEP/EMG)
What is Minimally Invasive Spine Surgery and How Does It Compare with Open Surgery?
Conventional open spine surgery requires long midline incisions and extensive muscle dissection - the paraspinal muscles on each side of the spine must be stripped from the spinous processes and laminae (the bony structures forming the back of the vertebrae) and retracted to provide the surgeon with access. This muscle stripping and prolonged retraction causes significant muscle damage, denervation, and devascularisation - even when the spinal surgery itself is straightforward, the muscle trauma from the approach causes most of the post-operative pain, blood loss, prolonged recovery, and functional disability.
The key technologies enabling MISS are: Tubular retractor systems (e.g., METRx, Quadrant, PIPELINE) that create a working channel of 18 to 26mm diameter; fluoroscopy and intraoperative 3D imaging (O-arm) for real-time spinal navigation and confirmation of implant position; neuronavigation (StealthStation) registered to intraoperative O-arm imaging for navigation-guided percutaneous pedicle screw placement (accurate to under 2mm); intraoperative neurophysiological monitoring (IONM) with somatosensory evoked potentials (SSEP), motor evoked potentials (MEP), and free-running and triggered electromyography (EMG) to detect any nerve root compromise in real-time; and endoscopic systems (uniportal or biportal) for fully endoscopic decompression and discectomy.
At Shree Hospitals, MISS is offered for the full range of lumbar, thoracic, and cervical spinal conditions. The choice between MISS and open surgery is made on an individual basis at the pre-operative consultation, considering the diagnosis, the number of spinal levels affected, the degree of deformity, and the patient's body habitus (MISS is technically more challenging in morbidly obese patients). All patients undergoing spinal surgery at Shree Hospitals have pre-operative MRI and where relevant CT and standing X-rays (for assessment of global spinal alignment and sagittal balance), and are assessed by the spine surgery team to confirm the surgical indication, the approach, and the extent of planned surgery.
Who Needs Minimally Invasive Spine Surgery?
MISS is indicated for:
- Lumbar disc herniation (L4/5 or L5/S1 prolapsed intervertebral disc) causing sciatica (leg pain, numbness, weakness) not resolving with 6 to 12 weeks of conservative treatment - microdiscectomy via tubular retractor
- Lumbar spondylolisthesis (slippage of one vertebra on another) causing back pain and neurogenic claudication - MIS-TLIF or OLIF with percutaneous pedicle screw fixation
- Lumbar canal stenosis causing neurogenic claudication (bilateral leg pain and weakness on walking, relieved by sitting or bending forward) - minimally invasive decompressive laminectomy or laminotomy
- Degenerative disc disease with axial back pain and disc height loss - XLIF or OLIF for lateral interbody fusion
- Adjacent segment disease after previous spinal fusion - extension of fixation using percutaneous screws
- Spinal fracture fixation - percutaneous pedicle screw fixation for thoracolumbar fractures
Is Minimally Invasive Spine Surgery Right for You?
MISS is the right approach when:
- Your spine pathology is confirmed on MRI and conservative treatment (physiotherapy, analgesics, epidural steroid injections) has been trialled for an adequate period and failed
- You have a neurological deficit (weakness, numbness, or bowel/bladder symptoms from spinal cord or nerve root compression) - these may require more urgent surgical decompression
- The surgery involves 1 to 3 spinal levels (MISS is most effective for limited-level fusion; complex multilevel deformity correction often requires open or hybrid approaches)
- You understand that MISS does not mean a minor operation - it is the same surgical goal as open surgery, achieved through a smaller access. Complications, including nerve injury and implant failure, can still occur
- You have had a multidisciplinary assessment including physiotherapy, pain management, and imaging confirming a surgically correctable structural cause for your symptoms
Why MISS Patients Return to Work in Weeks Not Months?
The difference in recovery after MISS vs open spine surgery is explained by what happens to the muscles:
- Open spine surgery: the paraspinal muscles are stripped from the vertebrae and retracted under sustained tension for hours. This causes significant muscle ischaemia (reduced blood flow), denervation (nerve damage to the muscles), and direct myocyte damage. Post-operative MRI studies show significant paraspinal muscle atrophy (shrinkage) after open spine surgery, which contributes to long-term back pain and functional weakness
- MISS: the tubular dilator spreads the muscle fibres along their natural planes without cutting them, and is only in place for the duration of the surgery. Post-operative MRI studies show minimal paraspinal muscle change after MISS approaches
- The result: MISS patients have significantly less post-operative back pain (from approach-related muscle damage), shorter hospital stays, less blood loss and transfusion requirement, lower wound infection rates, and return to work and normal activities significantly faster
MISS at Shree Hospitals achieves the same surgical outcomes as open spine surgery with less blood loss, shorter hospital stay, and return to work in 2 to 4 weeks.
Our spine surgery team at Shree Hospitals uses navigation-guided percutaneous pedicle screw fixation with O-arm intraoperative imaging, tubular retractor systems, and continuous intraoperative neuromonitoring (SSEP, MEP, and EMG) to deliver safe, effective minimally invasive spine surgery for disc herniation, spondylolisthesis, stenosis, and degenerative spinal disease.
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Our Approach to Minimally Invasive Spine Surgery at Shree Hospitals
At Shree Hospitals, the decision for MISS is made on clinical grounds - the right operation for each patient, through the least invasive approach that safely achieves the surgical goal, supported by the complete technology platform for precision and safety.
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Stereotactic Brain Biopsy
All patients undergo MRI of the relevant spinal region as the primary imaging modality - MRI demonstrates the soft tissue anatomy (disc, ligament, nerve roots, spinal cord, epidural fat) and the nature of neural compression. CT scan provides complementary bony anatomy detail, essential for pedicle screw trajectory planning, assessment of spinal instability, and evaluation of bone quality.
Microdiscectomy via Tubular Retractor
For lumbar disc herniation causing sciatica, microdiscectomy is the most common MISS procedure. The patient is positioned prone. A 22mm tubular retractor is inserted through a 2cm skin incision positioned over the affected disc level (confirmed with fluoroscopy). The operating microscope is positioned over the retractor. Through the tube, the ligamentum flavum is removed to expose the nerve root and the herniated disc fragment. The
MIS-TLIF with Navigation-Guided Percutaneous Screws
For spondylolisthesis or degenerative disc disease requiring fusion, MIS-TLIF (minimally invasive transforaminal lumbar interbody fusion) is performed. Two small (2cm) incisions are made bilaterally at the fusion level. Tubular retractors on each side expose the transforaminal corridor - the approach to the disc space that avoids the thecal sac and major nerve roots. The disc space is cleared and a PEEK or titanium interbody cage (packed with bone graft) is inserted to restore disc height and provide an anterior column support for fusion.
Intraoperative Neurophysiological Monitoring (IONM)
All fusion and decompression procedures at Shree Hospitals are performed with continuous IONM by a dedicated neurophysiologist. SSEP (somatosensory evoked potentials) monitor sensory tract function from the periphery to the cortex - a significant change alerts the surgeon to possible nerve or cord compression. MEP (motor evoked potentials) monitor motor tract function from the motor cortex to the periphery - the most sensitive indicator of cord ischaemia or direct cord compression. Free-running EMG from the muscle groups innervated by the nerve roots at the surgical level detects mechanical or thermal irritation of nerve roots in real-time.
Top Neurosurgeons in Mumbai
Every specialist at Shree Hospitals is MCh Neurosurgery board-certified with over 15 years of clinical experience in awake craniotomy, brain tumour surgery, neuronavigation, fluorescence-guided resection, functional brain mapping, and neuro-oncology.
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Dr. Yashwant Shelke
DNB Neurosurgery
Dr. Survendra Rai
Micro-Neurosurgery, Minimally Invasive Spine Surgery
Dr. Medha Vyas
Consultant Neurosurgeon & NeuroSpine Surgeon
Dr. Viswanathan Iyer
Consultant Neurosurgeon & Endovascular
Neurosurgery Services at Shree Hospitals
We provide a comprehensive range of neurosurgery and spine surgery services including minimally invasive spine surgery, complex spinal reconstruction, stereotactic procedures, awake craniotomy, and Gamma Knife radiosurgery.
Step by Step Process of Minimally Invasive Spine Surgery at Shree Hospitals
Step 1 - Clinical Assessment and Imaging Review
The spine surgeon reviews the patient's history (nature and duration of back pain and leg symptoms, response to conservative treatment, red flags), neurological examination, and MRI findings. The level and type of pathology (disc herniation, stenosis, spondylolisthesis) is confirmed. The surgical indication is confirmed: failed conservative treatment for at least 6 to 12 weeks (except for progressive neurological deficit, cauda equina syndrome, or tumour where urgent surgery is indicated). The surgical plan (microdiscectomy, MIS-TLIF, XLIF, etc.), approach, and extent of surgery is discussed with the patient.
Step 2 - Pre-Operative Preparation and Anaesthesia
Pre-operative CT is loaded into the navigation system for intraoperative registration. IONM electrode placement is completed by the neurophysiologist before positioning. The patient is positioned prone (for posterior MISS) or lateral decubitus (for XLIF/OLIF). Position is checked with fluoroscopy before draping. IONM baselines (SSEP and MEP) are established after anaesthesia induction and confirmed stable.
Step 3 - Skin Incision and Tubular Retractor Insertion
The level is confirmed with fluoroscopy (or navigation). A 2cm skin incision is made at the planned access point. Sequential dilators (6mm, 10mm, 14mm, 18mm) are passed through the paraspinal muscles under fluoroscopic guidance, spreading the fibres atraumatically. The appropriate tubular retractor (18 to 26mm diameter depending on the procedure) is docked and secured. The operating microscope (for microdiscectomy and MIS-TLIF) or endoscope (for endoscopic approaches) is positioned.
Step 4 - Decompression and Interbody Fusion (if indicated)
For microdiscectomy: ligamentum flavum removal, nerve root identification, disc fragment removal. For MIS-TLIF: bilateral tubular retractors, facetectomy, disc preparation, cage insertion, and fusion mass preparation. For XLIF/OLIF: lateral approach through the psoas muscle (XLIF) or oblique corridor (OLIF) to the anterior disc space under continuous EMG monitoring of the lumbar plexus, followed by disc preparation and cage insertion.
Step 5 - Navigation-Guided Percutaneous Screw Placement
For fusion cases: O-arm spin is acquired to register intraoperative anatomy to the navigation system. Each pedicle screw is planned on the navigation screen and the trajectory is confirmed. A Jamshidi needle is advanced along the navigation-guided trajectory, its position confirmed on the navigation screen in real-time. A guidewire is passed through the Jamshidi needle and the screw is inserted over the guidewire using a cannulated screw system. Triggered EMG confirms each screw is safely within the pedicle. A rod connects the screws bilaterally to complete the construct.
Step 6 - Closure and Recovery
Haemostasis is confirmed. Retractors are removed. The small incisions are closed with absorbable deep sutures and skin glue or subcuticular suture. The patient is transferred to the recovery room and then to the neurosurgical ward. Patients undergoing microdiscectomy are typically mobilised within 4 hours of surgery. Patients undergoing MIS-TLIF are mobilised on post-operative day 1 with physiotherapy. Most patients are discharged within 1 to 3 days. A post-operative CT or X-ray confirms screw position and cage placement before discharge.
Patient Questions About Minimally Invasive Spine Surgery
How is minimally invasive spine surgery different from keyhole surgery elsewhere in the body?
MISS shares the core principle of all keyhole surgery - accessing the target through the smallest possible incision to minimise collateral tissue damage - but has specific challenges that make it technically demanding. Unlike laparoscopic surgery (where a gas-filled body cavity creates working space and cameras can see the entire cavity), the spine is a solid structure surrounded by muscles. Working through a tubular retractor of 18 to 26mm diameter requires operating in a narrow cylindrical field of view with long-handled instruments, usually under an operating microscope or endoscope. This demands specific MISS training and experience - the surgeon's hand and instrument movements are constrained by the tube, and the depth of field is much greater than in open surgery.
Will I still need physiotherapy after minimally invasive spine surgery?
Yes - physiotherapy after MISS is as important as after open surgery, and is one of the key elements of a successful outcome. After microdiscectomy, most patients are given a structured physiotherapy programme starting within 2 to 4 weeks of surgery, focusing on core muscle strengthening and lumbar stabilisation. The earlier return to physiotherapy after MISS (compared with open surgery) is one of the advantages - less muscle damage means earlier functional rehabilitation is tolerable.
What is the success rate of minimally invasive microdiscectomy?
Microdiscectomy for lumbar disc herniation causing sciatica has excellent results. Approximately 90 to 95% of patients experience significant or complete relief of their leg pain (sciatica) after microdiscectomy. Back pain relief is less predictable (approximately 70 to 80% improvement) - this is because the disc herniation itself causes the leg pain by compressing the nerve root, but associated disc degeneration at the same level can continue to cause some back discomfort. The recurrence rate of disc herniation at the same level after microdiscectomy is approximately 5 to 10% - most recurrences respond to a second microdiscectomy.
How soon can I return to work after minimally invasive spine surgery?
Return to work depends on the type of work and the procedure performed. After microdiscectomy (the simplest and most common MISS procedure), patients with desk-based work can typically return within 2 to 3 weeks. Patients with physical or manual work should wait 4 to 6 weeks. After MIS-TLIF (single-level fusion), desk-based work return is typically 4 to 6 weeks and physical work at 3 months. This compares with open surgery return-to-work times of 6 to 12 weeks for desk work and 3 to 6 months for physical work.
Evidence-Based Case Studies by Our Specialists
Would Recommend Us
The leg pain was unbearable and my foot was dropping. The spine surgeon at Shree Hospitals said I needed the microdiscectomy quickly because of the foot weakness. The operation was through a tiny cut. I walked the same afternoon. My leg pain was dramatically better within days and my foot is completely normal now.
Mr. Tinesh
I could barely walk to the end of my street before the pain stopped me. The spine surgeons at Shree Hospitals operated through small cuts and I was walking properly within days. The x-rays showed perfect screw placement. I was back at my desk job five weeks later - much faster than I expected.
Mr. ashwin
My legs would give way after just a few minutes of walking. The spine surgeon said he could decompress the nerves through small tubes without needing screws or fusion. The operation at Shree Hospitals went perfectly. Two months later I completed a 2km walk - I had not been able to do that in three years.
Mr. Sashi
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