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. 2021 Jun;11(5):686-689.
doi: 10.1177/2192568220920564. Epub 2020 May 7.

Selective Fusion in Lenke 1 B/C: Before or After Menarche?

Nestor Ricardo Davies  1 , Carlos Tello  1 , Lucas Piantoni  1 , Rodrigo Remondino  1 , Eduardo Galaretto  1 , Ida Alejandra Francheri Wilson  1 , Victor Vasquez Rodriguez  1 , Ernesto Bersusky  1 , Mariano Noel  1
Affiliations

Selective Fusion in Lenke 1 B/C: Before or After Menarche?

Nestor Ricardo Davies et al. Global Spine J. 2021 Jun.

Abstract

Study design: A retrospective, comparative study.

Objective: To determine the radiological behavior of the lumbar curve in selective fusions in premenarchal girls with adolescent idiopathic scoliosis (Lenke 1 B/C).

Methods: A retrospective, comparative study was conducted. Selective fusion was performed in 21 patients younger than 18 years. The patients were divided into 2 groups: group A, after menarche (n = 12) and group B, before menarche (n = 9). Angles (preoperative, and at 1 and 2 years postoperatively) of the fused thoracic curves and the corresponding lumbar curves were measured and compared. For statistical analysis, the t test was used with a significance level of P < .05.

Results: Mean preoperative angle value of the proximal/main thoracic curve was 61° in group A and 57° in group B (P = .44), and 21° and 20°, respectively, in the first year postoperatively (P = .61). Mean preoperative angle value of the lumbar curve was 43° in group A and 42° in group B (P = .87), while at 1 year after surgery, this curve was 19° in both groups (P = 0.91), and at 2 years postoperatively, the curve was 16° in group A and 17° in group B (P = .75).

Conclusions: Over a 2-year follow-up, we did not find significant radiological differences in lumbar curves between patients who underwent surgery before and after menarche.

Keywords: adolescent idiopathic scoliosis; lumbar curve; menarche.

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Conflict of interest statement

Declaration of Conflicting Interests: The author(s) declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article.

Figures

Figure 1.
Figure 1.
Lumbar curve evolution. Abbreviations: °, degrees; immediate postop, immediate postoperative; 1st year postoperative, first year postoperative; 2nd year postoperative, second year postoperative.
See this image and copyright information in PMC

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