Spinal Column Reconstruction — Cost, Top Hospitals & Success Rates | MyMedicPlus

<p>Spinal column reconstruction refers to a spectrum of complex surgical procedures designed to restore the structural integrity, alignment, stability, and function of the vertebral column when it is disrupted by deformity, degenerative disease, trauma, tumour, infection, or iatrogenic causes (failed previous surgery). It encompasses decompression of neural elements, correction of spinal deformity, stabilisation through instrumentation and fusion, and in complex cases, staged anterior-posterior combined approaches involving corpectomy, vertebral body replacement, and multilevel reconstruction.</p><p>The human spinal column comprises 33 vertebrae (7 cervical, 12 thoracic, 5 lumbar, 5 fused sacral, 4 coccygeal) enclosing the spinal cord and cauda equina. Its dual functions — providing axial load-bearing stability while allowing flexible motion — make the spine biomechanically complex and vulnerable to a wide range of pathological processes. Disruption of normal spinal alignment (sagittal balance) is a major driver of disability; correction of global sagittal imbalance (defined as a sagittal vertical axis >5cm anterior to the S1 sacral promontory) is now recognised as a critical surgical goal that strongly predicts patient-reported outcome improvement.</p><p>Advances in spinal implant technology, intraoperative neuromonitoring (somatosensory and motor evoked potential monitoring), image-guided navigation, robotic-assisted placement of pedicle screws, and minimally invasive surgical (MIS) techniques have substantially improved surgical precision, reduced blood loss, and shortened recovery. The introduction of expandable cage technologies, patient-specific 3D-printed titanium implants, and biologics (rhBMP-2, demineralised bone matrix) has expanded what is technically achievable.</p><p>Spinal column reconstruction is a high-complexity procedure that must be performed by fellowship-trained spine surgeons (orthopaedic or neurosurgical) with dedicated experience in deformity correction and complex instrumentation, at centres with appropriate intensive care, neuromonitoring, blood banking, and rehabilitation infrastructure. A multidisciplinary team including neuro-anaesthesiology, neuromonitoring specialists, physical therapy, and pain management is essential for optimal outcomes.</p>

<p>Spinal column reconstruction addresses diverse pathological conditions that compromise the vertebral column's structural integrity, neural canal dimensions, or biomechanical alignment. Each condition may require tailored surgical strategies.</p><h4>Degenerative Spine Disease</h4><ul><li><strong>Degenerative Spondylolisthesis:</strong> Forward slippage of one vertebra on another due to facet joint arthrosis; most common at L4-L5; causes central canal stenosis, neurogenic claudication, and radiculopathy. Decompression with instrumented posterolateral fusion is the standard surgical treatment.</li><li><strong>Lumbar Spinal Stenosis:</strong> Narrowing of the spinal canal (central, lateral recess, or foraminal) due to degenerative hypertrophy of facet joints, ligamentum flavum, and disc; presents as neurogenic claudication. Laminectomy or minimally invasive decompression with or without fusion depending on stability.</li><li><strong>Cervical Myelopathy:</strong> Spinal cord compression from disc herniation, osteophytes, or ossification of the posterior longitudinal ligament (OPLL); treated with anterior cervical discectomy and fusion (ACDF), cervical arthroplasty, or posterior laminectomy and fusion depending on number of levels and sagittal alignment.</li><li><strong>Adult Degenerative Scoliosis:</strong> Progressive lateral curvature superimposed on degenerative changes in older adults; associated with asymmetric disc collapse, osteophytes, and loss of lumbar lordosis.</li></ul><h4>Spinal Deformity</h4><ul><li><strong>Adolescent Idiopathic Scoliosis (AIS):</strong> Lateral spinal curvature >10 degrees without a known cause; surgical correction (posterior spinal fusion with segmental instrumentation) indicated for curves >45-50 degrees or rapidly progressive curves.</li><li><strong>Adult Spinal Deformity (ASD):</strong> Includes de novo degenerative scoliosis and residual or progressive curves from untreated or previously treated AIS. Complex multilevel reconstruction addressing sagittal and coronal imbalance.</li><li><strong>Scheuermann Kyphosis:</strong> Structural thoracic hyperkyphosis (>50 degrees with wedged vertebrae); severe cases require anterior release and posterior instrumented fusion.</li><li><strong>Flatback Deformity / Sagittal Imbalance:</strong> Loss of lumbar lordosis causing forward lean and debilitating disability; corrected with pedicle subtraction osteotomy (PSO) or Smith-Petersen osteotomy (SPO) to restore lumbar lordosis.</li></ul><h4>Spinal Trauma</h4><ul><li><strong>Burst Fractures:</strong> High-energy vertebral fractures with retropulsion of bony fragments into the spinal canal; require decompression and posterior and/or anterior reconstruction with cages and instrumentation.</li><li><strong>Fracture-Dislocations:</strong> Highly unstable injuries requiring urgent surgical stabilisation and neural decompression.</li></ul><h4>Spinal Tumours and Infections</h4><ul><li><strong>Vertebral Metastases:</strong> Tumour destruction of one or more vertebral bodies causing instability and neural compression; treated with corpectomy, cage reconstruction, and posterior instrumentation for appropriate surgical candidates.</li><li><strong>Primary Spinal Tumours:</strong> Chordoma, osteosarcoma, and aggressive benign tumours may require en bloc vertebrectomy and 3D-printed custom implant reconstruction.</li><li><strong>Spinal Tuberculosis (Pott Disease) and Pyogenic Spondylodiscitis:</strong> Infectious destruction of vertebral bodies requires surgical debridement and reconstruction when neurological compromise, significant instability, or severe deformity is present.</li></ul><h4>Failed Prior Spine Surgery</h4><p>Revision spinal reconstruction addresses pseudoarthrosis (failed fusion), hardware failure (broken screws or rods), adjacent segment disease (new degeneration at levels adjacent to a prior fusion), and flatback deformity from previously inserted non-lordotic implants.</p>

<p>Spinal column reconstruction is a major surgical undertaking appropriate for carefully selected patients. Surgical candidacy is determined after exhaustive evaluation of imaging, clinical presentation, conservative treatment history, functional impairment, and medical comorbidities.</p><h4>General Eligibility Criteria</h4><ul><li>Clinically significant symptoms (pain, neurological deficit, functional impairment) with imaging-confirmed pathology explaining the symptoms</li><li>Failed or inadequate response to conservative management for an appropriate duration (typically 3-6 months for degenerative conditions, except for progressive neurological deficits or unstable trauma which are surgical emergencies)</li><li>Medically fit for general anaesthesia and major surgery — acceptable cardiopulmonary risk, optimised diabetes, blood pressure, nutritional status (albumin >3.5g/dL), and bone density</li><li>Non-smoker preferred; active smoking is a significant risk factor for pseudoarthrosis (fusion failure) and wound healing complications — smoking cessation for >6 weeks is recommended before elective fusion</li><li>No active infection that would contraindicate elective instrumented surgery</li></ul><h4>Condition-Specific Eligibility</h4><ul><li><strong>Scoliosis in adolescents:</strong> Cobb angle >45-50 degrees (AIS) or >40 degrees with documented progression >5 degrees per year; skeletal immaturity (Risser 0-2) with high progression risk</li><li><strong>Degenerative spondylolisthesis:</strong> Grade I-II slippage with persistent neurogenic claudication or radiculopathy unresponsive to 3-6 months of physiotherapy, epidural steroid injections, and activity modification</li><li><strong>Cervical myelopathy:</strong> Modified Japanese Orthopaedic Association (mJOA) score <14 or progressive neurological deterioration — surgical delay worsens outcomes</li><li><strong>Adult spinal deformity:</strong> Sagittal vertical axis >5cm, pelvic tilt >25 degrees, pain and disability refractory to 6 months of conservative care</li><li><strong>Spinal metastases:</strong> Neurological compression or instability with life expectancy >3 months; SINS (Spinal Instability Neoplastic Score) >12 indicates instability requiring surgical stabilisation</li></ul><h4>Contraindications and Risk Factors Requiring Optimisation</h4><ul><li>Active systemic infection or localised skin infection at the proposed surgical site</li><li>Severe osteoporosis (T-score <-2.5) without augmentation — poor screw purchase increases hardware failure; anti-osteoporotic treatment (teriparatide) may be required pre-operatively</li><li>Morbid obesity (BMI >40) with significantly elevated wound complication and anaesthetic risk — weight reduction recommended where feasible</li><li>Uncontrolled psychiatric illness or severe untreated depression — psychological optimisation improves post-operative outcomes and rehabilitation engagement</li></ul>

<p>Spinal column reconstruction encompasses a range of surgical approaches and techniques selected based on the pathology, spinal region, number of levels involved, patient anatomy, and surgeon expertise.</p><h4>1. Spinal Decompression</h4><p>The primary goal in stenosis and myelopathy is decompression of neural structures. Techniques include:</p><ul><li><strong>Laminectomy:</strong> Removal of the lamina to decompress the central canal; performed for multilevel lumbar stenosis or cervical myelopathy</li><li><strong>Laminotomy / Hemilaminotomy:</strong> Unilateral or bilateral limited lamina removal; less destabilising than full laminectomy</li><li><strong>Discectomy:</strong> Removal of herniated disc material decompressing the nerve root or spinal cord</li><li><strong>Foraminotomy:</strong> Enlargement of the neural foramen to relieve foraminal stenosis</li></ul><h4>2. Spinal Fusion and Instrumentation</h4><p>Fusion creates a permanent bony union between vertebrae, eliminating motion at pathological segments. Modern instrumented fusion uses titanium pedicle screws, rods, lateral mass screws, or anterior plates to provide rigid internal fixation while fusion matures.</p><ul><li><strong>Posterior Lumbar Interbody Fusion (PLIF):</strong> Bilateral disc space access from posterior, insertion of interbody cages, and posterior instrumentation</li><li><strong>Transforaminal Lumbar Interbody Fusion (TLIF):</strong> Unilateral approach through the foramen; less nerve retraction than PLIF; can be performed minimally invasively (MIS-TLIF)</li><li><strong>Anterior Lumbar Interbody Fusion (ALIF):</strong> Retroperitoneal anterior approach allowing large cage placement and lordosis restoration; combined with posterior fixation for multilevel reconstruction</li><li><strong>Lateral / Oblique Lumbar Interbody Fusion (LLIF, XLIF, OLIF):</strong> Retroperitoneal lateral approach through the psoas muscle (XLIF) or anterior to it (OLIF); avoids posterior dissection; highly effective for coronal and sagittal alignment correction in adult deformity</li><li><strong>Anterior Cervical Discectomy and Fusion (ACDF):</strong> Gold-standard for cervical disc herniation and myelopathy; anterior approach, disc removal, cage placement, and anterior plate fixation</li><li><strong>Posterior Cervical Fusion (PCF):</strong> For multilevel cervical myelopathy, posterior instability, or OPLL; lateral mass or pedicle screw instrumentation with rod fixation and laminectomy</li></ul><h4>3. Osteotomies for Deformity Correction</h4><ul><li><strong>Smith-Petersen Osteotomy (SPO):</strong> Posterior column shortening; corrects 5-15 degrees per level; multiple levels used for gradual correction</li><li><strong>Pedicle Subtraction Osteotomy (PSO):</strong> Three-column osteotomy; corrects 25-40 degrees in a single level; used for fixed sagittal imbalance and flatback deformity; high-complexity procedure with significant blood loss and neurological risk</li><li><strong>Vertebral Column Resection (VCR):</strong> Complete removal of one or more vertebrae; most powerful correction (up to 70+ degrees); reserved for rigid severe deformities; very high-risk, long-duration procedure</li></ul><h4>4. Vertebral Body Replacement (Corpectomy and Cage Reconstruction)</h4><p>For tumour, trauma, or infection involving vertebral body destruction, the diseased vertebra is removed (corpectomy) and replaced with an expandable titanium cage, carbon fibre cage, or patient-specific 3D-printed titanium implant, supplemented with autograft, allograft, or BMP-2. Combined anterior-posterior instrumentation secures the reconstruction.</p><h4>5. Minimally Invasive Spine Surgery (MISS)</h4><p>Percutaneous pedicle screw placement under fluoroscopic or navigation guidance, tubular retractor-based MIS-TLIF, endoscopic discectomy, and lateral access LLIF reduce muscle damage, blood loss, and hospitalisation compared to open techniques while maintaining equivalent neurological and fusion outcomes in appropriate cases.</p><h4>6. Robotic-Assisted Spine Surgery</h4><p>Systems such as Mazor X Stealth Edition, Globus ExcelsiusGPS, and Medtronic Mazor integrate preoperative CT-based planning with intraoperative robotic guidance for pedicle screw placement, achieving screw accuracy rates of 95-98% compared to 85-90% with fluoroscopy-guided freehand technique. Particularly valuable in revision surgery, deformity correction, and complex anatomy.</p>

<p>Appropriately selected patients who undergo spinal column reconstruction can experience transformative improvements in pain, neurological function, mobility, and quality of life.</p><h4>Pain Relief</h4><ul><li>Significant reduction in axial back pain, radicular leg pain (sciatica), and neck/arm pain following decompression and fusion in 80-90% of appropriately selected patients</li><li>Mean improvement in Visual Analogue Scale (VAS) pain scores of 4-6 points (out of 10) at 2-year follow-up across multiple large randomised controlled trials (SPORT, SLIP studies)</li><li>Reduction in analgesic requirement and opioid dependence following effective decompression</li></ul><h4>Neurological Recovery</h4><ul><li>Restoration of motor strength, sensation, and reflexes following decompression of neural structures in most patients without irreversible nerve damage</li><li>Improvement in cervical myelopathy signs (mJOA score improvement of 2-3 points on average) with prevention of progressive neurological deterioration</li><li>Bladder and bowel function recovery in patients with cauda equina syndrome when surgical decompression is achieved within 24-48 hours of onset</li></ul><h4>Deformity Correction</h4><ul><li>Restoration of sagittal and coronal alignment dramatically improves walking tolerance, standing endurance, and self-care capacity in adult spinal deformity patients</li><li>Adolescent scoliosis correction prevents progressive deformity, avoids cosmetic and psychological morbidity, and may prevent cardiorespiratory compromise in severe curves</li><li>Correction of flatback deformity restores upright posture, eliminates lumbar extensors fatigue, and allows pain-free independent ambulation</li></ul><h4>Functional and Quality-of-Life Outcomes</h4><ul><li>Significant improvement on Oswestry Disability Index (ODI), Neck Disability Index (NDI), and SRS-22r scoliosis outcomes scores in large prospective cohorts</li><li>Return to independent walking, employment, and recreational activities in the majority of patients with degenerative spine disease</li><li>Prevention of venous leg ulcer, skin breakdown, and contracture formation in patients with pre-existing neurological deficits</li></ul><h4>Tumour and Infection Control</h4><p>Surgical reconstruction following tumour corpectomy eliminates neural compression, provides immediate mechanical stability, allows safe delivery of post-operative radiotherapy, and in primary tumour cases, may achieve local disease control. Surgical debridement of spinal infections combined with implant reconstruction provides immediate stability and facilitates effective antibiotic delivery.</p>

<p>Spinal column reconstruction is associated with significant surgical risks that increase with the complexity of the procedure, number of levels fused, need for osteotomy, patient age, and comorbidities. Patients must be thoroughly counselled preoperatively.</p><h4>Neurological Complications</h4><ul><li><strong>New or worsened neurological deficit:</strong> Nerve root injury, spinal cord injury, or cauda equina injury — risk ranges from <1% for simple discectomy/fusion to 2-5% for complex deformity correction with PSO or VCR. Continuous intraoperative neuromonitoring (MEP and SSEP) detects early changes and allows surgical modification before permanent injury.</li><li><strong>Dural tear (cerebrospinal fluid leak):</strong> Occurs in 1-5% of primary surgeries and up to 15% of revision procedures; most managed intraoperatively with primary repair; may require extended bed rest or drain placement if persistent</li><li><strong>C5 nerve root palsy:</strong> Specific risk of cervical posterior decompression; causes deltoid weakness and shoulder pain; usually recovers spontaneously over weeks to months</li></ul><h4>Fusion-Related Complications</h4><ul><li><strong>Pseudoarthrosis (failed fusion):</strong> Non-union of the intended spinal fusion in 5-15% of cases; risk factors include smoking, osteoporosis, multilevel fusion, and inadequate biological grafting. Revision surgery may be required.</li><li><strong>Adjacent segment disease (ASD):</strong> Accelerated degeneration at levels adjacent to a fusion, due to altered biomechanics transferring increased stress to non-fused segments; occurs in 15-25% at 10 years; may require extension of fusion</li><li><strong>Hardware failure:</strong> Screw loosening, rod fracture, or cage subsidence — more common with osteoporosis, multilevel constructs, or high-demand patients; may require revision instrumentation</li></ul><h4>Surgical and Perioperative Risks</h4><ul><li><strong>Infection:</strong> Superficial wound infection (1-3%) and deep surgical site infection requiring implant removal or washout (1-3% in primary surgery; higher in revision); mitigated by prophylactic antibiotics, meticulous sterile technique, and vancomycin powder application</li><li><strong>Haemorrhage:</strong> Complex deformity correction may involve multi-litre blood loss; blood salvage (cell saver), tranexamic acid, and preoperative autologous blood donation reduce transfusion requirements</li><li><strong>Deep vein thrombosis and pulmonary embolism:</strong> DVT risk is 3-10% for major spinal reconstruction; mechanical prophylaxis and early ambulation are standard; pharmacological prophylaxis timing is balanced against haemorrhage risk</li><li><strong>Visceral and vascular injury:</strong> Anterior approach surgeries carry risk of great vessel injury (aorta, inferior vena cava) and visceral injury; retrograde ejaculation risk with L4-S1 anterior approaches in men (2-7%)</li></ul><h4>Long-Term Outcomes Considerations</h4><p>Despite high short-term success rates, 10-20% of patients who undergo lumbar fusion report outcomes that do not meet pre-operative expectations due to persistent pain from non-spinal causes, psychological factors, or adjacent segment disease. Careful patient selection and expectation management are paramount.</p>

<p>Recovery from spinal column reconstruction is a structured process spanning weeks to months. Adhering to post-operative protocols is critical for successful fusion and return to function.</p><h4>Immediate Post-Operative Care (0-72 Hours)</h4><ul><li>Monitoring in HDU or ICU for complex multilevel reconstruction, osteotomy cases, or prolonged procedures (>6 hours)</li><li>Neuromonitoring checks and neurological assessment immediately on waking</li><li>Early mobilisation with physical therapy assistance — most patients sit out of bed on post-operative day 1; walking begins day 1-2 for stable reconstructions</li><li>Drain management (wound drain removal typically day 1-2), wound care, and DVT prophylaxis initiation</li><li>Pain management via multimodal analgesia (NSAIDs, paracetamol, gabapentin, opioid PRN); opioid sparing approaches preferred to aid recovery and reduce dependence risk</li></ul><h4>Acute Rehabilitation (Weeks 1-6)</h4><ul><li>Activity restrictions: no heavy lifting (>2-5kg), no bending, twisting, or high-impact activity during the critical fusion period (typically 3 months)</li><li>Brace/orthosis use: thoracolumbosacral orthosis (TLSO) for 6-12 weeks in deformity correction and osteoporotic reconstruction; cervical collar for 6-12 weeks post-cervical fusion</li><li>Physiotherapy commences 2-4 weeks post-operatively: walking programme, gentle core activation, posture education</li><li>Wound inspection at 10-14 days; suture or staple removal</li></ul><h4>Imaging Surveillance</h4><ul><li><strong>Immediate post-operative:</strong> AP and lateral X-rays to confirm implant position, deformity correction achieved (Cobb angle, lordosis, sagittal alignment parameters)</li><li><strong>6 weeks:</strong> Standing X-rays to assess early implant stability</li><li><strong>3 months:</strong> CT scan to evaluate early fusion progress; confirm cage and screw positioning</li><li><strong>6-12 months:</strong> CT and standing full-length scoliosis films to confirm fusion maturation and maintained alignment correction</li><li><strong>Annual thereafter:</strong> Standing radiographs to detect adjacent segment disease, hardware failure, or deformity correction loss</li></ul><h4>Long-Term Rehabilitation</h4><p>Structured physiotherapy and active rehabilitation from 6 weeks to 6 months post-operatively are essential for optimising outcomes. Core strengthening, proprioception training, aerobic conditioning, and ergonomic education reduce the risk of adjacent segment degeneration and improve long-term function. Return to sedentary work typically occurs at 6-8 weeks; manual or physical labour at 4-6 months. High-impact sports are generally not recommended after multilevel fusion.</p>

<p>Spinal column reconstruction is among the most expensive surgical procedures in all of medicine, particularly in the United States. Costs vary enormously by procedure complexity, region, facility type, and insurance coverage.</p><h4>United States</h4><ul><li><strong>Single-level lumbar discectomy:</strong> USD 15,000-30,000 total (facility + surgeon + anaesthesia)</li><li><strong>One to two level lumbar fusion (TLIF/PLIF):</strong> USD 35,000-80,000</li><li><strong>Multilevel deformity correction with PSO:</strong> USD 100,000-250,000 including implant costs, ICU, and extended hospital stay</li><li><strong>Cervical fusion (ACDF, 1-3 levels):</strong> USD 25,000-60,000</li><li>Most major US insurers (including Medicare and Medicaid) cover medically indicated spinal surgery; prior authorisation and documentation of conservative treatment failure are typically required</li></ul><h4>United Kingdom</h4><ul><li>NHS covers all medically indicated spinal surgery; NHS waiting lists may prompt patients with means to access private care</li><li>Private lumbar fusion: £10,000-25,000; deformity correction: £30,000-80,000</li></ul><h4>India — Medical Tourism Hub</h4><ul><li><strong>Lumbar fusion (1-2 levels):</strong> USD 4,000-9,000 at major spine centres (Apollo, Medanta, Fortis, Manipal) — representing 75-85% savings vs US costs</li><li><strong>Complex deformity correction (PSO):</strong> USD 10,000-20,000 at specialty spine hospitals</li><li><strong>Cervical ACDF (1-3 levels):</strong> USD 3,500-8,000</li><li>Many Indian spine centres use the same implant systems (Medtronic, DePuy Synthes, Stryker) as US and European hospitals, with fellowship-trained surgeons trained in the US, UK, or Europe</li></ul><h4>Thailand, Turkey, Mexico</h4><ul><li><strong>Thailand:</strong> USD 8,000-20,000 for lumbar fusion at JCI-accredited hospitals (Bumrungrad International, Samitivej); USD 20,000-40,000 for complex deformity</li><li><strong>Turkey:</strong> USD 5,000-15,000 for lumbar fusion; increasingly popular for European medical tourists</li><li><strong>Mexico:</strong> USD 6,000-18,000 for multilevel fusion; popular destination for US patients seeking significant savings</li></ul><h4>Implant Costs</h4><p>Spinal implants represent a major cost driver — pedicle screw and rod systems typically add USD 5,000-20,000 to surgical costs, interbody cages USD 2,000-8,000 each, and expandable vertebral body replacement cages USD 4,000-12,000 each. These costs vary greatly by manufacturer and negotiated hospital pricing, and are substantially lower in India and Turkey due to different pricing structures and the availability of locally manufactured implants.</p>

<p>Spinal column reconstruction should be pursued only after a thorough trial of appropriate conservative management (unless the clinical presentation demands urgent surgical intervention). Several non-surgical alternatives and motion-preserving surgical options exist.</p><h4>Conservative Management</h4><ul><li><strong>Physiotherapy and exercise:</strong> Structured physiotherapy including motor control exercises, McKenzie method, and aerobic conditioning is the cornerstone of conservative management for axial back pain. A 2011 NEJM publication from the SPORT trial demonstrated that surgical and conservative outcomes for degenerative spondylolisthesis tend to converge at 4-year follow-up, with surgery providing faster early relief.</li><li><strong>Epidural steroid injections (ESIs):</strong> Transforaminal or interlaminar ESIs provide significant short-term (4-12 weeks) relief from radiculopathy and neurogenic claudication; do not alter the underlying structural pathology but may allow avoidance or deferral of surgery in some patients</li><li><strong>Facet joint injections and medial branch blocks / radiofrequency ablation:</strong> Effective for facet-mediated axial back pain (zygapophyseal joint pain); radiofrequency ablation of medial branch nerves provides 9-18 months of pain relief in appropriately selected patients</li><li><strong>Intradiscal procedures:</strong> Intradiscal electrothermal therapy (IDET), annuloplasty, and platelet-rich plasma (PRP) intradiscal injection are investigational; evidence base is limited but evolving</li></ul><h4>Motion-Preserving Surgical Alternatives</h4><ul><li><strong>Cervical disc arthroplasty (CDA):</strong> Replaces the degenerative cervical disc with an artificial disc prosthesis, preserving motion at the treated level. Long-term data (7-10 years) from multiple RCTs demonstrate superiority to ACDF for preventing adjacent segment disease. FDA-approved for 1-2 level cervical disc disease without instability.</li><li><strong>Lumbar disc arthroplasty:</strong> Total disc replacement at L4-L5 or L5-S1 for discogenic pain without significant facet arthropathy or instability. Less commonly performed than cervical arthroplasty due to more demanding patient selection criteria and surgical access challenges.</li><li><strong>Dynamic stabilisation systems:</strong> Interspinous spacers (X-STOP, Coflex) for lumbar stenosis as an alternative to laminectomy in elderly patients unable to tolerate open surgery; provide symptom relief with minimal tissue disruption but durability is inferior to fusion for instability.</li></ul><h4>Vertebroplasty and Kyphoplasty</h4><p>For vertebral compression fractures (osteoporotic or metastatic) without posterior vertebral wall disruption, percutaneous vertebroplasty (injection of polymethylmethacrylate cement) or balloon kyphoplasty (balloon-assisted cavity creation before cement injection) can provide rapid pain relief and partial height restoration through a minimally invasive approach under local sedation. These procedures are an important alternative to open reconstruction in fragile patients with compression fractures, though evidence for long-term benefit over conservative management remains debated for osteoporotic fractures.</p>