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Scoliosis Surgery: Understanding Procedures, Risks & Recovery

Scoliosis surgery (spinal fusion) corrects progressive or symptomatic spinal deformity. Modern techniques achieve excellent correction with lower complication rates, but it remains major surgery requiring careful patient selection and rehabilitation.

Indications

Cobb angle >45–50° (skeletally immature) or >50° (mature) with progression.
Curve >40° with significant pain, cosmetic concern, or pulmonary compromise.
Failure of bracing (adolescent idiopathic scoliosis).
Adult degenerative scoliosis with stenosis, intractable pain, sagittal imbalance.

Surgical Approaches

Approach	Indications	Advantages	Disadvantages
Posterior Spinal Fusion (PSF)	Most curves (thoracic, lumbar, double major); gold standard for AIS	Single incision, direct visualization, strong 3-column fixation, short hospital stay	Muscle dissection; longer fusion segments possible
Anterior Spinal Fusion (ASF)	Thoracolumbar/lumbar curves; flexible curves; open or VATS	Shorter fusion (preserves motion segments); better coronal correction	Thoracotomy morbidity; diaphragm injury risk; limited to T4-L4
Combined Anterior-Posterior	Severe rigid curves (>90°), revision, pseudarthrosis, high-risk pseudarthrosis	Maximal correction, fusion reliability	Two surgeries, higher morbidity, longer recovery
Vertebral Body Tethering (VBT)	Growing children (Risser 0–2), flexible curves 35–65°	Motion preservation, growth modulation	Newer; risk of overcorrection, tether breakage, revision
Growing Rods (MAGEC/traditional)	Early-onset scoliosis (<10 yr), syndromic	Allows spinal growth; periodic lengthening	Multiple surgeries (traditional); device failure (MAGEC)

Key Surgical Steps (PSF)

Prone position, neuromonitoring (SSEP/MEP/EMG).
Subperiosteal exposure, pedicle screw placement (navigation/robot-assisted).
Rod contouring, derotation, translation, compression/distraction.
Facet joint resection, decortication, bone graft (autograft ± allograft/BMP).
Final tightening, intraoperative imaging confirmation.

Risks & Complications

Neurologic injury: 0.5–2% (transient or permanent); neuromonitoring reduces risk.
Infection: 1–3% (superficial > deep); vancomycin powder, antibiotics.
Pseudarthrosis (nonunion): 1–5%; smoking, osteoporosis, long fusions to pelvis.
Implant failure: Rod breakage, screw pullout (late).
Adjacent segment disease: Degeneration above/below fusion (long-term).
Blood loss: 500–2000 mL; cell saver, tranexamic acid, preoperative erythropoietin.
Pulmonary: Atelectasis, pneumonia (incentive spirometry critical).

Recovery Timeline

Phase	Timeline	Milestones
Hospital	3–5 days	Pain control, mobilization, pulmonary toilet, bowel function
Early home	Weeks 1–6	Wean opioids, brace (if used), walk progressively, no BLT (bend/lift/twist)
Rehabilitation	Weeks 6–12	PT: core strengthening, posture, gait; return to school/work (sedentary)
Advanced	3–6 months	Impact activities, sports clearance (surgeon-dependent)
Full maturation	12–24 months	Solid fusion on CT; hardware permanent (rarely removed)

Long-Term Outcomes

Correction maintained in >90% at 10–20 years.
Quality of life (SRS-22) improves significantly.
Pregnancy/vaginal delivery possible after fusion.
Hardware prominent? Usually not; removal only if symptomatic.

Surgery is a collaborative decision between patient/family and a spine deformity surgeon. Shared decision-making, realistic expectations, and commitment to rehab optimize outcomes.