An interventional study of first corrective surgery and Reoperation in ASD, Scoliosis Idiopathic Adolescent and Scoliosis Idiopathic Adolescent Treatment, sponsored by Universitaire Ziekenhuizen KU Leuven. Recruiting at 1 site in Belgium. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-10-21.
Sponsored by Universitaire Ziekenhuizen KU Leuven · Not applicable, Interventional, and Other
This study examines which factors influence quality of life in adults with a spinal deformity. It looks at imaging findings together with pain, daily functioning, psychosocial factors, and frailty to support more person-centred care.
A total of 320 adults will participate in three groups: conservative treatment, first corrective surgery, or reoperation. All care follows standard practice; no experimental treatments are added. Participants complete questionnaires, and routine FASD tests and existing EOS/X-ray images may be used.
Follow-up lasts up to 2 years, with scheduled assessments depending on whether treatment is surgical or conservative.
This study investigates which factors are associated with quality of life in adults with a spinal deformity. Among patients with a comparable spinal alignment, pain, daily functioning, and quality of life can vary greatly. Therefore, the study examines not only the structural abnormality on medical imaging, but also pain, limitations in daily functioning, anxiety and low mood, fear of movement, concern about falling, participation in daily life, and overall frailty. The results may contribute to a more person-centred assessment and treatment of adults with a spinal deformity.
A total of 320 adults with a spinal deformity will be included. The study compares three groups: patients treated conservatively, patients undergoing a first corrective surgery, and patients undergoing a reoperation. Treatment is entirely determined by the regular care team; the study does not add any experimental intervention. Participants complete questionnaires on quality of life, back symptoms, functioning, and psychosocial well-being. Where applicable, the Function Assessment Scale for Spinal Deformity (FASD) is administered, a functional movement test that is part of standard care. Available EOS or X-ray images from routine care are used; no additional images are taken solely for the study.
Follow-up lasts up to 2 years. For surgically treated participants, assessments may take place at surgery and around 6 weeks, 4 months, 1 year, and 2 years post-operatively. Conservatively treated participants are assessed at baseline and, where appropriate within routine care, around 1 and 2 years.
660 studies on the registry are indexed under Scoliosis; 186 are open to participants now.
This study's planned enrollment of 320 is above the median of 45 across 386 interventional studies indexed under Scoliosis.
Browse Scoliosis studies →Universitaire Ziekenhuizen KU Leuven is the lead sponsor of 963 studies on the registry; 267 are open to participants now.
Of its 5 completed or terminated interventional studies of FDA-regulated products, 0 (0%) have results posted.
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Planned routine management through one of the following pathways:
Exclusion Criteria:
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Informed consent
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
patients undergoing a first corrective surgery
Procedure: first corrective surgery
patients undergoing a reoperation
Procedure: Reoperation
patients who are treated conservatively
patients undergoing a first corrective surgery or reoperation for ASD
patients undergoing a reoperation
Cross-sectional associations in QoL between conservative, primary surgery, and revision surgery study groups.
QoL is measured using the SRS-22r questionnaire during screening visit, at 6-weeks, 4 months, 1 year and 2 year.For Scoliosis Research Society 22 Revised (SRS-22r) questionaire a patient reported measure of health related quality of life in individuals with scoliosis. PROM assessing five domains: Function/Activity, Pain, Self image/Appearance, Mental Health, Satisfaction with Management. The mean score is located between 5 (Best) and 1 (Worst).
Time frame: within a period of 2 year
Cross sectional associations in QoL between conservative, primary surgery, and revision surgery study groups.
QoL is measured using EQ-5D-5L questionnaire questionnaire during screening visit, at 6-weeks, 4 months, 1 year and 2 year The EuroQol 5 Dimension 5 Level(EQ-5D-5L) include 5-digit health profile: Mobility, Self Care, Usual Activities, Pain/Discomfort, Anxiety/Depression converting it to an index value using the country-specific value set (range -0.59 to 1.0). EQ-5D-5L score expresses health status as a utility value ranging from \<0 (worse than death) to 1 (full health). Higher values indicate better overall health.
Time frame: Withing 2 years
Cross sectional associations in QoL between conservative, primary surgery, and revision surgery study groups.
QoL is measured using VAS questionnaire during screening visit, at 6-weeks, 4 months, 1 year and 2 year The Visual Anlog Score (VAS) - ranges from 0 to 100, where 0 means "worst imaginable health" and 100 means "best imaginable health." A higher VAS score reflects better self perceived health.
Time frame: Withing 2 years
Cross sectional associations in QoL between conservative, primary surgery, and revision surgery study groups.
QoL in non-revision ASD patients, adjusted for structural deformity severity, demographic characteristics, treatment pathway, and frailty-related health status. Structural covariates include Sagittal Vertical Axis(SVA), Pelvic tilt(PT), Pelvic incidence-lumbar lordosis mismatch (PI-LL) mismatch, and coronal Cobb angle. Frailty-related health status will be measured using the mFI-5. The modified 5-item frailty index (mFI-5) which assesses five clinical deficits: diabetes, hypertension, congestive heart failure, chronic obstructive pulmonary disease, and functional dependence. Each deficit is scored as 0 (absent) or 1 (present). The unit of measure is the total frailty score ranging from 0 to 5, where higher scores indicate greater frailty.
Time frame: Withing 2 years
Cross-sectional associations in psychosocial burden between conservative, primary surgery, and revision surgery study groups.
Measures include HADS during screening visit, at 6-weeks, 4 months, 1 year and 2 year. Hospital Anxiety and Depression Scale (HADS) a validated 14 item self report questionnaire assessing symptoms of anxiety and depression. Each item is scored on a 0-3 Likert scale, and the unit of measure is the subscale total score for Anxiety (HADS A, range 0-21) and Depression (HADS D, range 0-21). Higher scores indicate more severe symptoms.
Time frame: within a period of 2 year
Cross sectional associations in psychosocial burden between conservative, primary surgery, and revision surgery study groups.
Measures include FABQ-DV during screening visit, at 6-weeks, 4 months, 1 year and 2 year. Fear Avoidance Beliefs Questionnaire - Dutch Version( FABQ-DV) validated self report instrument assessing fear avoidance beliefs related to physical activity and work. The questionnaire contains items scored on a Likert scale from 0 to 6, where higher scores indicate stronger fear avoidance beliefs. The unit of measure is the total score per subscale (Physical Activity and Work), each expressed as the sum of item scores, with higher totals reflecting greater fear avoidance.
Time frame: Withing 2 years
Cross sectional associations in psychosocial burden between conservative, primary surgery, and revision surgery study groups.
Measures include FES-I during screening visit, at 6-weeks, 4 months, 1 year and 2 year. Falls Efficacy Scale - International (FES-I) a validated self report questionnaire assessing fear of falling during everyday activities. The instrument contains 16 items, each scored on a 4 point Likert scale (1-4). The unit of measure is the total score ranging from 16 to 64, where higher scores indicate greater fear of falling.
Time frame: Withing 2 years
Cross sectional associations in psychosocial burden between conservative, primary surgery, and revision surgery study groups.
Measures include IPA during screening visit, at 6-weeks, 4 months, 1 year and 2 year. Impact on Participation and Autonomy Questionnaire (IPA) a validated self report instrument assessing perceived participation restrictions and autonomy in daily life. The questionnaire contains multiple domains (e.g., Autonomy Indoors, Autonomy Outdoors, Social Life, Family Role, Work/Education), with items scored on a Likert scale from 0 to 4. The unit of measure is the domain score, expressed as the mean or sum of item scores, where higher scores indicate greater perceived limitations in participation and autonomy.
Time frame: Withing 2 years
Cross-sectional associations in functional impairment between conservative, primary surgery, and revision surgery study groups.
Measures include FASD. Function Assessment scale for Spinal Deformity (FASD) contains 14 items across three subscales: spinal balance/mobility, stability limits/sensory integration, and ADL/gait. Each is graded on an ordinal 3- or 4-point scale. The maximum total score is 56; higher numbers represent better functional performance.
Time frame: within a period of 2 year
Cross sectional associations in functional impairment between conservative, primary surgery, and revision surgery study groups.
Measures include ODI. Oswestry Disability Index (ODI) summerise the points from all 10 completed sections like pain intensity, lifting, and walking (each scored from 0 (least disability) to 5 (severe disability). Score is reported as a percentage from 0% to 100% that measures functional impairment from low back pain, divided into five standard ranges: minimal disability (0-20%), moderate disability (21-40%), severe disability (41-60%), crippled (61-80%), and bed-bound or exaggerating symptoms (81-100%)
Time frame: Withing 2 years
Cross-sectional differences between conservative, primary surgery, and revision surgery groups.
Cross-sectional differences between conservative, primary surgery, and revision surgery groups in QoL, psychosocial burden, functional impairment, structural deformity severity, spine-specific symptom burden, and frailty-related health status. Longitudinal within-patient changes across repeated routine-care follow-up timepoints in SRS-22r, EQ-5D-5L, HADS, FABQ-DV, FES-I, IPA, FASD, ODI, COMI, SVA, PT, PI-LL mismatch, coronal Cobb angle, and mFI-5. The use of these scales is already described in the primary outcomes.
Time frame: within a period of 2 year
Plan to share: Undecided
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