Spine literature: Does segmental alignment matter? A novel understanding of segmental compensation and reciprocal change following single-level lumbar reconstruction.

Summary (English)

Educational summary of peer-reviewed work on spinal disorders (not medical advice).

Article: Does segmental alignment matter? A novel understanding of segmental compensation and reciprocal change following single-level lumbar reconstruction.

Authors (excerpt): Saagar Dhanjani, Michael J Pompliano, Daniel J Thibaudeau, Amber Price, Christopher Colwell

Overview: OBJECTIVE: Global and regional spinal compensatory alignment changes are well documented, but segmental compensation/reciprocation remain poorly understood. The purpose of this study was to provide a detailed analysis of adjacent segment behavior after single-level reconstruction. METHODS: Inclusion criteria were adult patients who underwent L5-S1 anterior lumbar interbody fusion for nonnormative preoperative segmental lordosis (SL), demonstrated a ≥ 5° SL increase by intradiscal angle (IDA) or motion segment angle (MSA), and had normal preoperative lumbar lordosis (LL; pelvic incidence [PI]-LL < 10°). IDA; MSA; anterior disc height (ADH) and posterior disc height (PDH) at the index, adjacent, and supra-adjacent levels; and LL, PI, and L1 pelvic angle, were measured preoperatively and at 1 month and 1 year postoperatively. RESULTS: A total of 100 patients met the inclusion criteria. The fusion levels increased IDA and MSA at 1…

Full citation: Does segmental alignment matter? A novel understanding of segmental compensation and reciprocal change following single-level lumbar reconstruction.. Journal of neurosurgery. Spine. PubMed: PMID 41004857; DOI: 10.3171/2025.5.SPINE25651.

Consult the original paper for methods, statistics, and clinical applicability.

Summary (Bulgarian)

Това е обобщение за пациенти и специалисти, базирано на официалното резюме в PubMed. Публикацията е в списание Journal of neurosurgery. Spine и засяга теми, свързани с гръбначния стълб (диагностика, лечение или епидемиология — според съдържанието на оригиналната статия). Не замества очен преглед при лекар и не представлява персонализиран медицински съвет.

Заглавие: Spine literature: Does segmental alignment matter? A novel understanding of segmental compensation and reciprocal change following single-level lumbar reconstruction.

Оригинално резюме (английски, съкратено): OBJECTIVE: Global and regional spinal compensatory alignment changes are well documented, but segmental compensation/reciprocation remain poorly understood. The purpose of this study was to provide a detailed analysis of adjacent segment behavior after single-level reconstruction. METHODS: Inclusion criteria were adult patients who underwent L5-S1 anterior lumbar interbody fusion for nonnormative preoperative segmental lordosis (SL), demonstrated a ≥ 5° SL increase by intradiscal angle (IDA) or motion segment angle (MSA), and had normal preoperative lumbar lordosis (LL; pelvic incidence [PI]-LL < 10°). IDA; MSA; anterior disc height (ADH) and posterior disc height (PDH) at the index, adjacent, and supra-adjacent levels; and LL, PI, and L1 pelvic angle, were…

Source: Does segmental alignment matter? A novel understanding of segmental compensation and reciprocal change following single-level lumbar reconstruction.. Journal of neurosurgery. Spine. PubMed: PMID 41004857; DOI: 10.3171/2025.5.SPINE25651.