Evidence map›Paper›PMID 34176012›Full record

ArticleEuropean spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society2021

Surgical increase in thoracic kyphosis predicts increase of cervical lordosis after thoracic fusion for adolescent idiopathic scoliosis.

Jean-Luc Clement, Ludovic Le Goff, Ioana Oborocianu, Olivier Rosello, Carlo Bertoncelli, Federico Solla, Virginie Rampal

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Article in European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

17 citing papers in PubMed.

  1. Article
  2. Posterior spinal fusion using dual rod translation: impact on kyphosis restoration in AIS.European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society · 2026
    Article
  3. Review
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  10. Outcomes following instrumentation removal after posterior corrective fixation in adolescent idiopathic scoliosis.European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society · 2025
    Article
  11. Article
  12. Neck and shoulder pain in thoracic adolescent idiopathic scoliosis 10 years after posterior spinal fusion.European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society · 2024
    Article
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors.

Jean-Luc ClementDepartment of Pediatric Orthopedics and Scoliosis Surgery, Hôpitaux Pédiatriques de Nice CHU Lenval, 57 Avenue de la Californie, Nice, France. clement.jluc@wanadoo.fr.ORCID 0000-0003-4192-0543
Ludovic Le GoffDepartment of Pediatric Orthopedics and Scoliosis Surgery, Hôpitaux Pédiatriques de Nice CHU Lenval, 57 Avenue de la Californie, Nice, France.
Ioana OborocianuDepartment of Pediatric Orthopedics and Scoliosis Surgery, Hôpitaux Pédiatriques de Nice CHU Lenval, 57 Avenue de la Californie, Nice, France.
Olivier RoselloDepartment of Pediatric Orthopedics and Scoliosis Surgery, Hôpitaux Pédiatriques de Nice CHU Lenval, 57 Avenue de la Californie, Nice, France.
Carlo BertoncelliDepartment of Pediatric Orthopedics and Scoliosis Surgery, Hôpitaux Pédiatriques de Nice CHU Lenval, 57 Avenue de la Californie, Nice, France.
Federico SollaDepartment of Pediatric Orthopedics and Scoliosis Surgery, Hôpitaux Pédiatriques de Nice CHU Lenval, 57 Avenue de la Californie, Nice, France.
Virginie RampalDepartment of Pediatric Orthopedics and Scoliosis Surgery, Hôpitaux Pédiatriques de Nice CHU Lenval, 57 Avenue de la Californie, Nice, France.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeThe modification of cervical lordosis (CL) after adolescent idiopathic scoliosis (AIS) surgery is influenced by the correction of thoracic hypokyphosis. The quantification of the increase of CL as a function of the increase of thoracic kyphosis (TK) has never been calculated.

methodsA total of 92 consecutive AIS patients who underwent a posterior thoracic selective fusion, corrected by simultaneous translation on 2 rods technique, with minimum 24-month follow-up, were analyzed from a prospective database. We evaluated global sagittal kyphosis and lordosis. CL was divided by the horizontal line in proximal (PCL) and distal cervical lordosis (DCL), likewise TK in proximal (PTK) and distal TK (DTK), and lumbar lordosis (LL) in proximal (PLL) and distal LL (DLL).

resultsThe mean TK gain was 16°, 14° and 28° in the whole cohort, normokyphosis group and hypokyphosis group, respectively. The mean DCL gain was, respectively, 9°, 7° and 20° and the mean CL gain 8°, 5° and 21°. There was a strong correlation between TK gain and CL gain (coefficient = 0.86) and between TK gain and DCL gain (coefficient = 0.74). The regression equation was defined as DCLgain = - 3 + 0.75 × TKgain (p < 0.0001) corresponding on average to 60% of the TK gain.

conclusion60% of the TK gain was transferred to DCL gain. Correlations reflect the geometrical equivalence between PTK and DCL. The use of sagittal global measurements shows that DCL is equivalent to PTK and can be expressed as a function of pelvic parameters (DCL = PT + LL-PI). DCL must be considered to optimize the postoperative sagittal alignment of the spine.

Indexed as

KyphosisLordosisScoliosisSpinal FusionAdolescentHumansRetrospective StudiesThoracic VertebraeAdolescent idiopathic scoliosisCervical lordosisProximal and distal cervical lordosisProximal thoracic kyphosisThoracic kyphosis

Identifiers

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.