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Textbook/Neurosurgery/Spinal deformity and scoliosis referral
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Spinal deformity and scoliosis referral

Recognise spinal deformity across growth stages, use proportionate standing assessment, and refer according to age, progression, neurological risk, respiratory impact and function.

24 min full readUK scopeSources checked 13 Sept 2026Clinical review pending
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Deformity with neural or respiratory compromise

Rapidly progressive weakness, gait loss, sphincter dysfunction, respiratory compromise, fever or severe night pain with a spinal curve suggests more than uncomplicated idiopathic deformity.

Action: Perform urgent neurological and systemic assessment, protect the spine if instability is possible, and arrange age-appropriate specialist imaging and paediatric or adult spinal referral without waiting for routine curve surveillance.

Open the sections you need. The overview is shown first.
01Core principlesThe concepts and mechanisms needed to understand the subject.

A structural scoliosis combines lateral curvature and vertebral rotation, producing shoulder, waist or rib asymmetry. Idiopathic curves have no identified cause after appropriate assessment; congenital vertebral anomalies, neuromuscular imbalance, syndromes, tumours and intraspinal lesions form distinct groups. Growth can amplify deformity and, in young children, impair thoracic development.

Adult deformity may represent progression of adolescent scoliosis or de novo degeneration. Symptoms often arise from facet and disc pain, sagittal imbalance or foraminal stenosis rather than Cobb magnitude alone. Major reconstructive surgery has meaningful neurological, pulmonary, implant and non-union risks, so the treatment goal must be functionally important and realistic.

Key points

  • Scoliosis is a three-dimensional deformity, conventionally defined by a standing Cobb angle of at least 10 degrees; posture and leg-length difference can create a non-structural apparent curve.
  • Age is part of the diagnosis: early-onset disease begins before 10, adolescent idiopathic scoliosis during later growth, and adult deformity may be longstanding or degenerative.
  • The worked case keeps clinical asymmetry, standing radiographs, growth assessment and the referral outcome visible in Rapid mode.
  • Do not use one Cobb angle alone. Progression risk also depends on skeletal maturity, curve pattern, aetiology, remaining growth and serial measurement variability.
  • In growing adolescents, treatment is risk-based observation, bracing or surgery; a brace aims to reduce progression rather than straighten the spine and requires specialist fitting and adherence support.
  • Adult deformity decisions are driven more by pain, imbalance, neurological compression, disability, bone quality and frailty; non-operative care is usually tried before major reconstruction.
  • Neurological signs, marked pain, rapid progression, very young age or atypical/systemic features should prevent casual labelling as idiopathic scoliosis.
02Mechanisms and patternsImportant relationships and how to distinguish them.
Early-onset curveRed flag

A structural curve appearing before age 10 needs prompt paediatric spinal-deformity assessment because cause, remaining growth and thoracic development differ; rapid progression, pain, neurological or systemic features make referral urgent.

Neurological deformityRed flag

Weakness, sensory change, abnormal reflexes, gait dysfunction or sphincter symptoms with a curve requires urgent cord, root and neural-axis assessment.

Adolescent asymmetry

Unequal shoulders or waist, trunk shift and rib or lumbar prominence on forward bending suggest rotational deformity that should be assessed during growth.

Adult imbalance

Stooping, inability to stand upright, back or leg pain, limited walking and compensatory hip or knee flexion indicate symptomatic adult deformity.

Secondary cause

Congenital anomalies, neuromuscular disease, connective-tissue syndromes, infection, tumour, fracture and leg-length discrepancy require cause-specific evaluation.

Red flags requiring action

  • A new curve with weakness, sensory change, abnormal reflexes, gait disturbance or bladder and bowel symptoms requires urgent neural-axis and spinal assessment.
  • Scoliosis before age 10, rapid visible progression or worsening during a growth spurt needs prompt paediatric deformity referral because thoracic growth may be affected.
  • Persistent severe pain, night waking, constitutional symptoms, fever, cancer history or focal bony tenderness suggests infection, tumour or another secondary cause.
  • Dyspnoea, reduced exercise tolerance or a severe thoracic deformity requires respiratory assessment alongside deformity planning, particularly in early-onset or neuromuscular disease.
03Interpreting evidenceInformation, measurements and their limitations.
Reasoning sequence

Consider the information, its meaning and its limitations before deciding what follows.

  1. 01
    Standing whole-spine posteroanterior and lateral radiographs
    Why
    Confirm structural deformity, measure Cobb angle and sagittal alignment, and assess skeletal maturity with proportionate radiation exposure.
    Interpretation and limitations
    Refer after trained clinical suspicion rather than screening radiographs indiscriminately. Interpret curve size with growth remaining and serial progression, not as an isolated treatment command.
  2. 02
    Forward-bend and trunk-rotation assessment
    Why
    Detect rotational prominence and distinguish a likely structural curve from flexible postural or pelvic asymmetry.
    Interpretation and limitations
    A reproducible prominence supports radiographic assessment; a flexible curve that corrects with pelvic levelling suggests a functional driver requiring its own management.
  3. 03
    Complete neurological examination
    Why
    Identify cord, root, peripheral or neuromuscular signs and establish whether deformity is atypical or urgent.
    Interpretation and limitations
    Abnormal neurology changes the diagnosis and generally prompts specialist MRI rather than routine idiopathic surveillance.
  4. 04
    MRI neural axis
    Why
    Evaluate spinal cord, conus, roots and soft tissues when neurological signs, pain, early onset, rapid progression or an atypical curve suggests secondary pathology.
    Interpretation and limitations
    Syrinx, tethering, tumour or other neural-axis disease requires multidisciplinary sequencing before deformity correction.
  5. 05
    Respiratory and functional assessment
    Why
    Quantify breathlessness, exercise tolerance, pulmonary function and daily limitations in severe thoracic, early-onset or neuromuscular disease.
    Interpretation and limitations
    Respiratory reserve and trajectory influence treatment urgency, anaesthetic risk and realistic goals; curve size alone cannot substitute.
04Applied reasoningWorked examples connecting principles to decisions.
01Worked caseAdolescent rib prominence during growthA 12-year-old has new shoulder asymmetry and a positive forward-bend test without pain, neurology or systemic illness.
  1. 1Context: establish age, growth and menarchal or maturity history, family history, progression, pain and neurological symptoms; examine standing balance, leg lengths, skin markers, forward bend and complete neurology.
  2. 2Reasoning: treat the rotational prominence as suspected structural scoliosis and refer for trained deformity assessment with standing whole-spine PA and lateral radiographs, Cobb measurement and maturity assessment.
  3. 3Outcome: select observation, brace discussion or operative opinion from curve magnitude, pattern, progression and growth remaining; do not promise that exercise alone will correct a progressive structural curve.
  4. 4Verification: use consistent low-dose standing technique and serial clinical measurements, monitor growth and function, and escalate if the curve progresses or pain, neurological or respiratory features emerge.
02Age-specific referralEarly-onset, adolescent and adult routesA structural curve is suspected and age, cause or symptom burden changes the likely natural history.
  1. 1Refer a child younger than 10 promptly to a paediatric deformity service; investigate congenital, neuromuscular, syndromic and neural-axis causes rather than assuming adolescent idiopathic disease.
  2. 2For adolescents, preserve the bracing window by assessing during remaining growth; observation is active surveillance, not discharge without progression advice.
  3. 3For adults, refer to a recognised spine centre when pain, imbalance, root symptoms or disability remain significant after proportionate non-operative care, or sooner for neurological decline.
03Urgent atypical curvePain, progression or neurological featuresA curve has rapid change, severe or night pain, systemic illness, abnormal neurology or respiratory compromise.
  1. 1Escalate to the appropriate paediatric or adult spinal service and localise the neurological or respiratory risk rather than waiting for a routine scoliosis clinic slot.
  2. 2Use MRI and targeted investigations to identify tumour, infection, syrinx, tethering, fracture or neuromuscular disease according to the presentation.
  3. 3Treat the underlying cause and agree deformity surveillance or correction only after multidisciplinary review of growth, stability and neural risk.
05Checking understandingVerify the reasoning, revisit uncertainties and apply feedback.
  • In growing patients, record height, maturity, clinical balance, trunk rotation, Cobb angle and interval change using consistent technique and the longest safe surveillance interval.
  • Track brace fit, wear burden, skin problems, breathing, body image, school participation and shared goals; brace success means reducing progression, not immediate straightening.
  • For early-onset or neuromuscular disease, monitor respiratory function, sitting balance, skin, nutrition and equipment as well as the radiographic curve.
  • In adults, measure walking tolerance, standing balance, neurological function, pain distribution, bone health, frailty and response to non-operative care before major reconstruction.
  • After surgery, follow neurology, pulmonary status, wound, infection, junctional change, implant integrity, fusion and patient-reported function over the timescale appropriate to growth and construct.
06Special situationsVariants, exceptions and circumstances that change the usual approach.

Ten degrees defines not treats

The Cobb definition identifies scoliosis, but treatment is driven by progression risk, maturity, cause and impact rather than the threshold alone.

Growth changes everything

The same curve magnitude carries different progression and thoracic-development implications in a seven-year-old, a growing adolescent and a mature adult.

Bracing modifies risk

A brace is designed to reduce further progression during growth; it does not erase structural rotation and must not replace surveillance.

Adult symptoms are multidimensional

Sagittal imbalance, foraminal stenosis, deconditioning and hip or knee compensation may matter more than the coronal angle.

MRI is selective

Neurology, very early onset, pain or atypical progression justify neural-axis assessment; not every uncomplicated adolescent curve needs routine MRI.

07Common pitfallsFrequent interpretation and management errors.
  1. 01

    Waiting until skeletal maturity to refer a growing adolescent, thereby losing an observation or bracing opportunity.

  2. 02

    Applying adolescent Cobb-based treatment rules to early-onset, neuromuscular or adult degenerative deformity.

  3. 03

    Calling a painful or neurological curve idiopathic without investigating tumour, infection, syrinx, tethering or other secondary disease.

  4. 04

    Ordering serial CT rather than proportionate standing radiographs and selective MRI.

  5. 05

    Presenting major adult reconstruction as a radiographic correction without discussing functional goals, frailty, bone health, non-union and neurological risk.

Practice

Two practice questions

Question 1 of 20 correct
NeurosurgeryOriginal SBA

Assessing adolescent asymmetry

A 12-year-old has unequal shoulders and a rib prominence on forward bending but no neurological deficit or systemic illness. What is the most appropriate next assessment?

Sources and review status4 sources · checked 13 Sept 2026 · clinical review pending
Sources

Sources and review status

National guidance is shown before implementation-dependent detail. Apply principles in context and verify current guidance when a decision affects care. Source check completed 13 Sept 2026; clinical approval remains outstanding.

  • SRS AAOS POSNA AAP adolescent scoliosis screening statementJoint position statement endorsed by SRS, AAOS, POSNA and AAP, published 2015; recommendations and evidence discussion read 13 September 2026. Supports trained adolescent examination at age- and sex-specific preventive visits and minimising unnecessary radiographs; it is a US screening statement, not a UK referral tariff. Chapter-specific use: spinal deformity and scoliosis referral.
  • Scoliosis Research Society adolescent idiopathic scoliosis guidanceCurrent SRS professional/patient condition body read 13 September 2026: clinical asymmetry, standing radiographs, Cobb measurement, growth-dependent progression risk, and observation, bracing and surgery categories. Applies to adolescent idiopathic scoliosis and does not define congenital, neuromuscular, early-onset or adult treatment. Chapter-specific use: spinal deformity and scoliosis referral.
  • British Scoliosis Society early-onset scoliosis guidanceCurrent British Scoliosis Society body read 13 September 2026: scoliosis before age 10, heterogeneous idiopathic, congenital, neuromuscular and syndromic causes, growth and thoracic-development implications, investigation and specialist treatment concepts. Professional society patient information, not a numerical national referral guideline. Chapter-specific use: spinal deformity and scoliosis referral.
  • British Scoliosis Society adult degenerative scoliosis guidanceCurrent British Scoliosis Society body read 13 September 2026: adult deformity symptoms, GP assessment, recognised-centre referral, initial analgesia and physiotherapy, selective injections and surgery after non-operative methods. It does not govern children or acute neurological emergencies. Chapter-specific use: spinal deformity and scoliosis referral.
Authoring stateComplete draftClinical stateAwaiting reviewJurisdictionUnited Kingdom