Posterior Spinal Instrumentation and Fusion (PSIF)

Posterior Spinal Instrumentation and Fusion is a widely used surgical technique for scoliosis correction. Through a posterior approach, spinal implants such as screws and rods are used to realign and stabilise the deformity, while bone graft facilitates fusion across selected vertebral levels. The objective is to achieve durable correction, restore balance, and prevent further progression of the curve.

Who is MAGEC intended for?

MAGEC is intended for skeletally immature children, particularly those with early-onset scoliosis who still have significant spinal and thoracic growth remaining.

Main goals of PSIF in scoliosis

stop curve progression
improve spinal alignment in the coronal, sagittal, and rotational planes
restore better trunk balance and shoulder/pelvic symmetry
stabilise the spine long term
reduce the risk of future deformity progression that could affect pain, posture, function, or cardiopulmonary mechanics in severe cases.

PSIF is commonly considered in patients with scoliosis when:

the curve is progressive
the deformity is structurally significant
non-operative measures such as observation or bracing are no longer sufficient
the surgical objective is definitive correction and long-term stabilisation. In adolescent idiopathic scoliosis, surgery is generally discussed when the curve becomes large enough that continued progression is likely.

PSIF remains a major workhorse procedure because it offers:

strong three-dimensional deformity control
reliable long-term stabilisation
broad applicability across many scoliosis patterns
established clinical track record
effective control of progression in structural curves

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