Research Club Newsletter: 1st Edition - Scoliosis

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NEWSLETTER

ANINTRODUCTIONTO

Scoliosis is a lateral curvature to the spine normally diagnosed when it is >10°. It is a diagnosis most commonly observed in adolescents; however, it can be seen in adults as an incidental finding often without need for treatment. Scoliosis is considered aggressive in juveniles because it is exacerbated during early growth spurts. Early intervention and monitoring is imperative to prevent possible irreversible damage.

FUNCTIONALVSSTRUCTURAL

Functional scoliosis is the lateral curvature of the spine from extra-spinal causes. It can be idiopathic, from trauma, or even from other structural imbalance stemming from etiologies like leg length discrepancies. Functional scoliosis is also observed in many disease processes affecting muscle tone like Duchenne Muscular Dystrophy or neurologic processes such as Cerebral Palsy.

Structural scoliosis is caused by spinal pathologies. This is observed in congenital scoliosis in failure of segmentation or formation, when half of the vertebra does not form causing curvature. This is often diagnosed in utero and comes with a myriad of other health concerns for the fetus.

SCOLISOSIS

THERE ARE MANY WAYS TO DIAGNOSE A SCOLIOTIC PATTERN IN ADOLESCENTS AND ADULTS. ONE OF THE MOST UTILIZED DIAGNOSTIC TOOLS FOR EVALUATING SCOLIOTIC CURVATURES IS THE DIGITAL X-RAY. ALTHOUGH X-RAY IMAGING IS ONLY 2-D, FILM AND DIGITAL X-RAY IMAGES OFFER A CLEAR PICTURE OF WHAT IS HAPPENING TO THE PATIENT’S SPINE. MANY CHIROPRACTIC PHYSICIANS WANT TO KNOW THE PRECISE CURVATURE OF THE SPINE AS IT RELATES TO THE INDIVIDUAL. DIGITAL IMAGING IS OFTEN USED AS A BASELINE AND A REFERENCE POINT TO MONITOR IMPROVEMENTS AND TO HIGHLIGHT ANY CHANGES AS THE INDIVIDUAL AGES.

THE MOST UTILIZED MEASUREMENT IN THE MEDICAL COMMUNITY FOR ASSESSING AND QUANTITATIVELY DIAGNOSING THE SPINE’S CURVATURE IS THE COBB ANGLE. THE COBB ANGLE IS DRAWN BETWEEN THE TWO LINES OF THE MOST SUPERIORLY INVOLVED VERTEBRAE TO THE MOST INFERIORLY INVOLVED VERTEBRAE ABOVE THE APEX OF THE CONCAVITY. THE FIRST LINE IS DRAWN PERPENDICULAR TO THE UPPER ENDPLATE OF THE UPPERMOST VERTEBRAE, AND THE SECOND LINE IS DRAWN PERPENDICULAR TO THE LOWER ENDPLATE OF THE LOWERMOST VERTEBRAE. TO FINALIZE THE MEASUREMENT, AN ESTIMATE IS TAKEN BETWEEN THE TWO TANGENTS AS SEEN IN FIGURE.

COBB ANGLE PARAMETERS

10-20 DEGREES (MILD SCOLIOSIS)

20-40 DEGREES (MODERATE SCOLIOSIS) 40 DEGREES OR MORE (SEVERE SCOLIOSIS)

Cobb Angle

Scoliosis Classifications

AS WE’VE DISCUSSED, NIH DEFINES SCOLIOSIS AS A GENERAL TERM COMPRISING A HETEROGENEOUS GROUP OF CONDITIONS CONSISTING OF CHANGES IN THE SHAPE AND POSITION OF THE SPINE, THORAX, AND TRUNK. SCOLIOSIS CAN DEVELOP IN A VARIETY OF WAYS AND ARE CLASSIFIED UNDER A VARIETY OF DIFFERENT CATEGORIES. THE SPINE MAY CURVE TO THE LEFT, SOMETIMES CALLED LEVOSCOLIOSIS, OR CURVE TO THE RIGHT, REFERRED TO AS DEXTROSCOLIOSIS.

THE MOST RECENTLY UPDATED GUIDELINES FOR CLASSIFYING SCOLIOSIS WERE COMPLETED IN 2016 BY THE INTERNATIONAL SCIENTIFIC SOCIETY ON SCOLIOSIS ORTHOPAEDIC AND REHABILITATION TREATMENT (SOSORT). THREE MAJOR CATEGORIES ARE FREQUENTLY USED FOR SCOLIOSIS CLASSIFICATIONS, TOPOGRAPHIC, ANGULAR, AND CHRONOLOGICAL.

THE CHRONOLOGICAL CLASSIFICATION SYSTEM USES THE AGE OF THE INDIVIDUAL AT WHICH THE DEFORMITY WAS DIAGNOSED, THE ANGULAR CLASSIFICATION SYSTEM USES A STANDING FRONTAL RADIOGRAPH ACCORDING TO THE COBB METHOD, AND THE MOST COMMONLY USED TOPOGRAPHIC CLASSIFICATION SYSTEM THAT IS BASED ON THE ANATOMICAL SITE THE SPINAL DEFORMITY DEVELOPS IN THE FRONTAL PLANE. THE TOPOGRAPHIC SYSTEM DISTINGUISHES FOUR MAJOR TYPES OF SCOLIOSIS: THORACIC, LUMBAR, THORACO-LUMBAR AND S-SHAPED. THERE IS ALSO THE RIGO CLASSIFICATION SYSTEM BUT DUE TO THE SURGICAL NATURE OF THE SYSTEM, SOME OF ITS CRITERIA CANNOT INCLUDE NON-SURGICAL CASES.

Scoliosis Classifications

BY NATURE, IDIOPATHIC SCOLIOSIS HAS YET TO BE LINKED TO ANY SPECIFIC CAUSE, BUT SOME RESEARCH HAS PREVIOUSLY SUGGESTED THAT LEFT THORACIC SCOLIOSIS CONFIGURATIONS ARE INTRINSICALLY PATHOLOGIC, WHEREAS THE MORE USUAL RIGHT CURVE IS, IN A SENSE, "NORMAL." STUDIES HAVE FOUND THAT ALTHOUGH AN ASSOCIATION EXISTS BETWEEN LEFT THORACIC CURVES AND DISEASE, IT IS NOT STRONG ENOUGH TO DETERMINE WHETHER A DIFFERENT APPROACH SHOULD BE ADOPTED FOR TREATMENT ON THE BASIS OF SCOLIOSIS PATTERN ALONE.

SCOLIOSIS STARTS WITH A CURVE OF 10° AND CAN REACH 40°+, THE WORSE THE CURVE THE GREATER THE CLASSIFICATION OF SCOLIOSIS. THERE ARE SEVERAL CLASSIFICATIONS FOR SCOLIOSIS, WHILE THEY ALL JUDGE CURVES DIFFERENTLY THEY ARE ESSENTIAL FOR TREATMENT AND BRACING. SOME CLASSIFICATIONS ARE BETTER FOR ADULTS WHILE SOME WORK BETTER FOR THE ADOLESCENT POPULATION.

KING AND LENKE ARE BETTER FOR THE ADOLESCENT POPULATION WHILE AEBI, SCHWAB AND SRS ARE BETTER USED WITH THE ADULT POPULATION AS THE MATURITY OF THE SCOLIOSIS PLAYS A LARGE ROLE IN STABILITY AND PROGRESSION. WHILE THERE ARE MANY TYPES OF CLASSIFICATIONS THE ONES LISTED BELOW ARE THE MOST UTILIZED.

AEBI CLASSIFICATION

THIS CLASSIFICATION SYSTEM WAS CREATED IN 2005 BY MAX AEBI AND CONSISTS OF 3 TYPES OF CURVES:

PRIMARY DEGENERATIVE SCOLIOSIS (“DENOVO” SCOLIOSIS)

PROGRESSIVE IDIOPATHIC SCOLIOSIS OF THE LUMBAR AND/OR THE THORACOLUMBAR SPINE

SECONDARY ADULT SCOLIOSIS THORACOLUMBAR OR LUMBOSACRAL

DEFORMITY PROGRESSES DUE TO BONE WEAKNESS (OSTEOPOROTIC PATIENT)

LENKE CLASSIFICATION

LENKE CLASSIFICATION

THIS CLASSIFICATION SYSTEM WAS CREATED IN 2001 BY LAWRENCE LENKE AND CONSISTS OF 6 TYPES OF CURVES:

MAJOR CURVE MAIN THORACIC, MINOR, AND NON STRUCTURAL PROXIMAL THORACIC AND LUMBOTHORACIC

DOUBLE THORACIC MAIN AND PROXIMAL ARE STRUCTURAL, LUMBOTHORACIC IS NOT STRUCTURAL

MAJOR CURVE IN MAIN THORACIC, STRUCTURAL CURVE IN LUMBOTHORACIC

TRIPLE CURVES

MAJOR CURVE IN THORACOLUMBAR JUNCTION, CURVES IN PROXIMAL, MAIN THORACIC NON-STRUCTURAL

STRUCTURAL CURVE IN MAIN THORACIC, THROACOLUMBAR AND LUMBAR

SCHWAB CLASSIFICATION

THIS CLASSIFICATION SYSTEM WAS CREATED IN 2006 BY FRANK SCHWAB AND CONSISTS OF 6 TYPES OF CURVES:

THORACIC ONLY SCOLIOSIS

UPPER THORACIC MAJOR T4-T8

LOWER THORACIC MAJOR T9-T10

THORACOLUMBAR MAJOR CURVE T11-L1

LUMBAR MAJOR CURVE L2-L4

TYPE K DEFORMITY IN SAGITTAL PLANE ONLY

LENKE CLASSIFICATION

SRS CLASSIFICATION

THIS CLASSIFICATION SYSTEM WAS CREATED IN 2006 BY THE SCOLIOSIS RESEARCH SOCIETY AND CONSISTS OF 7 TYPES OF CURVES:

I. SINGLE THORACIC

II. DOUBLE THORACIC

III. DOUBLE MAJOR

IV. TRIPLE MAJOR

V. THORACOLUMBAR

VI. LUMBAR “DENOVO” IDIOPATHIC

VII. PRIMARY SAGITTAL PLANE DEFORMITY

KINGS CLASSIFICATION

THIS SYSTEM WAS CREATED IN 1983 BY HOWARD KING AND CONSISTS OF 5 TYPES OF CURVES:

I. LUMBAR CROSSING MIDLINE

II. THORACIC CROSSING MIDLINE

III. THORACIC

IV. LONG THORACIC

V. DOUBLE THORACIC

LENKE CLASSIFICATION TREATMENT OPTIONS

THE INTERNATIONAL SOCIETY ON SCOLIOSIS ORTHOPAEDIC AND REHABILITATION TREATMENT (SOSORT) USES THE TERM PHYSIOTHERAPEUTIC SCOLIOSIS-SPECIFIC EXERCISES (PSSES) FOR ALL SCHOOLS AND METHODS THAT APPLY CORRECTIVE EXERCISES TO DEVELOP STABILITY AND BALANCE IN PATIENTS WITH SCOLIOSIS. THERE ARE A FEW DIFFERENT METHODS OF PSSES USED TO TREAT IDIOPATHIC SCOLIOSIS. THE MOST WELL-KNOWN PSSE PHYSIOTHERAPY SCHOOLS OPERATING UNDER THE SOSORT ARE: SCHROTH IN GERMANY, LYON IN FRANCE, SEAS (SCIENTIFIC EXERCISE APPROACH TO SCOLIOSIS) IN ITALY, BSPTS (BARCELONA SCOLIOSIS PHYSICAL THERAPY SCHOOL) IN SPAIN, SIDE SHIFT IN THE UK, DOBOMED AND FITS (FUNCTIONAL INDIVIDUAL THERAPY OF SCOLIOSIS) IN POLAND, AND FED IN SPAIN. PSSES ALL UTILIZE SIMILAR CONCEPTS COMBINING EXERCISES THAT FOCUS ON MULTIDIRECTIONAL MOVEMENTS TO CORRECT SCOLIOTIC CURVE PATTERN DEVIATIONS. EACH PROTOCOL INDIVIDUALIZES TREATMENT PROGRAMMING TO SHIFT A SPECIFIC SPINAL CURVE TOWARD A NORMAL PATTERN.

TREATMENT OPTIONS

THE FIVE PRINCIPLES OF THE SCHROTH METHOD ARE AUTO-ELONGATION (DETORSION), DEFLECTION, DEROTATION, ROTATIONAL BREATHING, AND STABILIZATION. A STUDY LOOKING AT THE EFFICACY OF SCHROTH EXERCISES NOTED A DIFFERENCE BETWEEN INDIVIDUALS WITH COBB ANGLES 30 DEGREES AND BELOW AND INDIVIDUALS WITH COBB ANGLES GREATER THAN 30 DEGREES. THE BASIS OF THE LYON METHOD AVOIDS SPINAL EXTENSION DURING EXERCISE AND ENHANCES KYPHOSIS OF THE THORACIC REGION WITH LORDOSIS OF THE LUMBAR SPINE AS WELL AS FRONTAL PLANE CORRECTION, SEGMENTAL MOBILIZATION, CORE STABILIZATION, PROPRIOCEPTION, BALANCE, AND STABILIZATION. THE SEAS EXERCISES ARE BASED ON SELFCORRECTION AND STABILIZATION, WORKING ON ISSUES THAT MAY DEVELOP IN THE FUTURE BASED ON THE INITIAL EVALUATION. THE BSPTS CONCEPT FOLLOWS GLOBAL POSTURAL ALIGNMENT, APPLING HIGH INTENSITY FORCES CREATED INSIDE THE BODY, FOCUSING ON 3D POSTURAL CORRECTION, THE EXPANSION/CONTRACTION TECHNIQUE, STABILIZATION BY MUSCLE TENSION, AND INTEGRATION.

THE SIDE SHIFT METHOD’S TECHNIQUE IS BASED ON INTENSIVE TRUNKBENDING TRAINING, AN ACTIVE FORM OF AUTOCORRECTION. THE DOBOMED METHOD FOCUSES ON DEEPENING THE THORACIC KYPHOSIS, CLOSED KINEMATIC CHAINS, SYMMETRICAL BODY POSITION, ACTIVE STABILIZATION, POSTURAL HABITS, AND ROTATIONAL BREATHING. THE FITS METHODOLOGY WORKS TO ELIMINATE MYOFASCIAL RESTRICTIONS AND CONSTRUCT A SERIES OF NEW CORRECTIVE POSTURE PATTERNS IN EVERYDAY ACTIVITIES. THE FED METHODOLOGY STANDS FOR FIXATION, ELONGATION, AND DEROTATION AND IS DESCRIBED AS A THREE-DIMENSIONAL STABILIZATION OF THE SPINE USING SIMULTANEOUS EXTENSION AND DEROTATION AS WELL AS A SOPHISTICATED MECHANOTHERAPY DEVICE SO FORCES CAN ACT ON THE SPECIFIC ANGLE OF THE SCOLIOTIC CURVE.

FACULTY INTERVIEW

THE FIRST INTERVIEW IS DR. GREGORY PRIEST, DC, DABCO INTERVIEWED BY CIERRA

DR. PRIEST HAD A STANDOUT CAREER WITH 34 YEARS IN PRIVATE PRACTICE THAT HE RETIRED FROM IN 2017. HE HAS SPENT THE LAST 21 YEARS AS AN INSTRUCTOR FOR POSTGRADUATE CONTINUED EDUCATION WITH HIS LAST 4.5 YEARS TEACHING AT KEISER UNIVERSITY, COLLEGE OF CHIROPRACTIC MEDICINE. DURING HIS TIME AS A CHIROPRACTOR, DR. PRIEST WAS GIVEN THE OPPORTUNITY TO BE AN EXPERT WITNESS IN COURT CASES, ONE INCLUDING THE TREATMENT OF A YOUNG WOMAN WITH SCOLIOSIS. THE FOLLOWING IS A SYNOPSIS OF HIS DISCUSSION OF TREATING SCOLIOSIS:

THE TREATING DOCTOR HAD BEEN SEEING THE PATIENT HER WHOLE LIFE WITHOUT DIAGNOSING AND SENDING THE PATIENT TO TREATMENT RESULTING IN THE PATIENT NEEDING RODS PUT INTO HER BACK BECAUSE THE CURVE HAD PROGRESSED TOO FAR. DR. PRIEST’S APPROACH TO TREATMENT OF SCOLIOTIC CASES WAS REFERRAL. HE HAD PATIENTS WITH IT, BUT DID NOT TREAT IT BECAUSE THERE ARE MANY ARGUMENTS FOR TREATMENT NOT BEING STRONG IN ANY DIRECTION. HE REFERRED TO IT AS A CONTROVERSIAL DISORDER AND THE DELAYING TREATMENT CAN BE CATASTROPHIC.

FACULTY INTERVIEW

THE FIRST INTERVIEW IS DR.

INTERVIEWED BY

THIS IS PART OF THE REASON HE DID NOT PERFORM SCHOOL PHYSICALS. HE DID, HOWEVER, COMANAGE PATIENTS DURING TREATMENT TO HELP MAINTAIN MOBILITY IN THEIR SPINE. THAT BEING SAID WHEN CASES DID PRESENT THEMSELVES HE WOULD REFER THEM TO A TRUSTED PEDIATRIC ORTHOPEDIST IN HIS AREA. HE COMMONLY SAW THE FOLLOWING POPULATIONS WITH THE DISORDER: POST-POLIO SYNDROME PATIENTS, PUBERTY AGE FEMALES, AND POSTPARTUM WOMEN. HE SAID IT IS IMPERATIVE THAT SCOLIOSIS GET CAUGHT

EARLY ON BECAUSE IT IS EXACERBATED DURING PEAK HEIGHT VELOCITY GROWTH, NORMALLY AROUND PUBERTY. HIS FINAL ADVICE TO US AS STUDENT’S, “WE ARE CARING PEOPLE AND WE HAVE AN OVERWHELMING URGE TO HELP UPON GRADUATIONS. WHEN WE TRY TO BE EVERYTHING TO EVERYBODY I WOULD GO HOME QUESTIONING THE ADVICE I GAVE. SHOOTING FROM THE HIP RARELY DOES PEOPLE WELL. LEARN TO SAY “I CAN’T TELL AND I OWE YOU THE TRUTH” YOU WOULD BE AMAZED WHAT PEOPLE ASK YOU. “HAVE NO EGO AND STAY IN YOUR LANE.”

FACULTY INTERVIEW

THE NEXT INTERVIEW IS DR. ALEXANDER CASTELLANO DC, MSACN, ASSISTANT PROFESSOR INTERVIEWED BY CHRISTI HERFURTH DR. CASTELLANO IS ONE OF OUR CLINICIANS HERE IN OUR SPINE CARE CLINIC. HE HAS WORKED ALONGSIDE THE NEW YORK YANKEES STRENGTH AND CONDITIONING COACH AND EARNED A MASTER OF SCIENCE OF CLINICAL NUTRITION (MSACN) AND DOCTOR OF CHIROPRACTIC (DC) FROM NEW YORK CHIROPRACTIC COLLEGE (NYCC), GRADUATING WITH HONORS. DR. CASTELLANO ALSO HAS EXPERIENCE IN MULTIDISCIPLINARY SETTINGS, INCLUDING CHIROPRACTIC, PHYSICAL THERAPY AND NEUROLOGY. HE HAS ALSO WORKED WITH MAJOR ATHLETIC PROGRAMS SUCH AS THE BOSTON RED SOX, THE NEW ENGLAND PATRIOTS, BOSTON UNIVERSITY ATHLETICS AND HARVARD UNIVERSITY SPORTS MEDICINE. NOW HE TEACHES FOR KEISER UNIVERSITY’S CHIROPRACTIC PROGRAM AND HELPS OUR STUDENTS EXCEL IN THE CLINIC.

FACULTY INTERVIEW

INTERVIEW WITH DR. ALEXANDER CASTELLANO DC, MSACN, ASSISTANT PROFESSOR INTERVIEWED BY CHRISTI HERFURTH

HOW OFTEN HAVE YOU SEEN PATIENTS WITH SCOLIOSIS IN PRACTICE?

I SEE PATIENTS EVERY DAY WITH SCOLIOSIS! WE MUST FIRST DIFFERENTIATE BETWEEN FUNCTIONAL AND STRUCTURAL. REGARDLESS, IT IS A VERY COMMON OCCURRENCE

WHAT ARE THINGS TO CONSIDER WHEN TREATING SCOLIOSIS?

COBB'S ANGLE, QUANTIFY THE MAGNITUDE. AGE OF THE PATIENT, ACTIVITY LEVEL, GENDER, FUNCTIONAL ASSESSMENT, AND INDIVIDUAL GOALS OF THE PATIENT

WHAT KINDS OF THINGS HAVE YOU DONE TO TREAT SCOLIOSIS?

MULTIPLE OLDER (65+) PATIENTS WITH DEBILITATING SCOLIOSIS WHO BENEFIT FROM SEAS EXERCISES (SPECIFIC EXERCISE APPROACH TO SCOLIOSIS) WHICH AIMS TO REDUCE THE RISK OF BRACING, INCREASE CORRECTION, PREPARE WEANING, AND AVOID/REDUCE SIDE-EFFECTS OF SCOLIOSIS

FACULTY INTERVIEW

INTERVIEW WITH DR. ALEXANDER CASTELLANO DC, MSACN, ASSISTANT PROFESSOR INTERVIEWED BY CHRISTI HERFURTH

WHAT ARE YOUR THOUGHTS ON BRACING? BRACING + EXERCISES?

REFER BACK TO SEAS EXERCISES, MANY DETERMINANTS. TYPICALLY, ANY CONDITION CAN BE IMPROVED IN TERMS OF FUNCTION AND QUALITY OF LIFE WITH THE CORRECT ASSESSMENT AND APPROACH.

WHAT KIND OF RESULTS HAVE YOU SEEN?

FANTASTIC RESULTS INCLUDING GREATER ROM, REDUCED PAIN, INCREASE IN ACTIVITY LEVEL, AND DECREASED CATASTROPHIZING

ANY OTHER COMMENTS AND THOUGHTS YOU'D LIKE TO SHARE WITH THE NEXT GENERATION OF CHIROPRACTORS?

USAIN BOLT HAS SCOLIOSIS! HE ALSO HAS FLAT FEET. WE NEED TO BE HESITANT TO LABEL THESE FINDINGS AS GOOD OR BAD. THE BODY IS EXTREMELY ADAPTABLE AND RESILIENT. WE MUST TAKE AN INDIVIDUALIZED APPROACH FOR EACH PATIENT

Reference Page:

1. ARCHER JE, GARDNER AC, ROPER HP, CHIKERMANE AA, TATMAN AJ. DUCHENNE MUSCULAR DYSTROPHY: THE MANAGEMENT OF SCOLIOSIS. J SPINE SURG. 2016;2(3):185194. DOI:10.21037/JSS.2016.08.05

LEE JG, YUN YC, JO WJ, SEOG TY, YOON YS. CORRELATION OF RADIOGRAPHIC AND PATIENT ASSESSMENT OF SPINE FOLLOWING CORRECTION OF NONSTRUCTURAL COMPONENT IN JUVENILE IDIOPATHIC SCOLIOSIS. ANN REHABIL MED. 2018;42(6):863-871. DOI:10.5535/ARM.2018.42.6.863

2. JANICKI JA, ALMAN B. SCOLIOSIS: REVIEW OF DIAGNOSIS AND TREATMENT. PAEDIATR CHILD HEALTH. 2007;12(9):771-776. DOI:10.1093/PCH/12.9.771

3. HORNG MH, KUOK CP, FU MJ, LIN CJ, SUN YN. COBB ANGLE MEASUREMENT OF SPINE FROM X-RAY IMAGES USING CONVOLUTIONAL NEURAL NETWORK. COMPUT MATH METHODS MED. 2019;2019:6357171. PUBLISHED 2019 FEB 19. DOI:10.1155/2019/6357171

4. 7 NEGRINI S, DONZELLI S, AULISA AG, ET AL. 2016 SOSORT GUIDELINES: ORTHOPEDIC AND REHABILITATION TREATMENT OF IDIOPATHIC SCOLIOSIS DURING GROWTH. SCOLIOSIS SPINAL DISORD. 2018;13:3. PUBLISHED 2018 JAN 10. DOI:10.1186/S13013-017-0145-8

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5. 8 GOLDBERG CJ, MOORE DP, FOGARTY EE, DOWLING FE. LEFT THORACIC CURVE PATTERNS AND THEIR ASSOCIATION WITH DISEASE. SPINE (PHILA PA 1976). 1999;24(12):1228-1233. DOI:10.1097/00007632-199906150-00010

HTTPS://PUBMED.NCBI.NLM.NIH.GOV/25269032/YAMAN O, DALBAYRAK S. IDIOPATHIC SCOLIOSIS. TURKISH NEUROSURGERY. JANUARY 2013. DOI:10.5137/1019-5149.JTN.883813.0

7. DAGDIA L, KOKABU T, ITO M. CLASSIFICATION OF ADULT SPINAL DEFORMITY: REVIEW OF CURRENT CONCEPTS AND FUTURE DIRECTIONS. SPINE SURGERY AND RELATED RESEARCH. 2019;3(1):17-26.DOI:10.22603/SSRR.2017-0100

8. OVADIA D. CLASSIFICATION OF ADOLESCENT IDIOPATHIC SCOLIOSIS (AIS). JOURNAL OF CHILDREN’S ORTHOPAEDICS. 2013;7(1):25-28. DOI:10.1007/S11832-012-0459-2

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9 SLATTERY C, VERMA K. CLASSIFICATIONS IN BRIEF: THE LENKE CLASSIFICATION FOR ADOLESCENT IDIOPATHIC SCOLIOSIS. CLINICAL ORTHOPAEDICS AND RELATED RESEARCH. 2018;476(11):2271-2276.DOI:10.1097/CORR.0000000000000405

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