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Objective <p>This study aims to retrospectively analyze anatomical parameters for safe LCP performance and provide a technical note on its execution.</p> Methods <p>We retrospectively analyzed 200 head computed tomography (CT) scans to identify the optimal LCP point (P), defined by the intersection of the anterior margin of the C1 posterior arch and the midpoint between the inferior C1 posterior arch and superior C2 lamina. Anatomical distances (D1, D2, D3) from this point to relevant landmarks were measured. Statistical analyses were performed using the Mann-Whitney U test and Student’s t-test to compare groups. A detailed technical note on LCP execution, including patient positioning, anatomical considerations, and procedural steps, is provided, augmented by an illustrative case.</p> Results <p>The mean age of the 200 patients (108 females, 92 males) was 63.67 ± 11.79 years. Mean distances were D1: 7.04 ± 2.09&#xa0;mm, D2: 14.59 ± 4.94&#xa0;mm, and D3: 12.17 ± 4.79&#xa0;mm. No statistically significant differences in puncture distances were observed between sexes or age groups (≤ 60 vs. &gt;60 years), except for D3 in women, where those over 60 years exhibited a significantly greater mean distance compared to younger women (<i>p</i> = 0.047). The illustrative case describes a 61-year-old male who developed a surgical site infection and required CSF analysis, for which LCP was successfully performed due to contraindication for LP, yielding clear CSF with negative cultures.</p> Conclusions <p>LCP is a safe and effective alternative for CSF collection in scenarios where LP is contraindicated. Our anatomical findings, supported by the illustrative case, delineate consistent landmarks and suggest minimal anatomical variation that might necessitate slight adjustments, particularly for D3 in older women. The detailed technical approach combined with anatomical precision enhances the safety and efficacy of LCP, making it a valuable tool in neurosurgical practice.</p>

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The technique for lateral cervical puncture

  • 期刊论文

  • 发表日期：

    2026年1月20日

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  • Luís Gustavo Biondi-Soares,
  • Nathália Soares Barbosa,
  • Luis F. Fabrini Paleare,
  • João Paulo Feghali Finamore Simoni,
  • Felipe Salvagni Pereira,
  • Filipi Fim Andreão,
  • Deborah de Farias Lelis,
  • Gabriel Ataide Monção,
  • Ádria Gabrielle Biondi Soares,
  • Derval de Paula Pimentel,
  • Leandro de Assis Barbosa

摘要

Objective

This study aims to retrospectively analyze anatomical parameters for safe LCP performance and provide a technical note on its execution.

Methods

We retrospectively analyzed 200 head computed tomography (CT) scans to identify the optimal LCP point (P), defined by the intersection of the anterior margin of the C1 posterior arch and the midpoint between the inferior C1 posterior arch and superior C2 lamina. Anatomical distances (D1, D2, D3) from this point to relevant landmarks were measured. Statistical analyses were performed using the Mann-Whitney U test and Student’s t-test to compare groups. A detailed technical note on LCP execution, including patient positioning, anatomical considerations, and procedural steps, is provided, augmented by an illustrative case.

Results

The mean age of the 200 patients (108 females, 92 males) was 63.67 ± 11.79 years. Mean distances were D1: 7.04 ± 2.09 mm, D2: 14.59 ± 4.94 mm, and D3: 12.17 ± 4.79 mm. No statistically significant differences in puncture distances were observed between sexes or age groups (≤ 60 vs. >60 years), except for D3 in women, where those over 60 years exhibited a significantly greater mean distance compared to younger women (p = 0.047). The illustrative case describes a 61-year-old male who developed a surgical site infection and required CSF analysis, for which LCP was successfully performed due to contraindication for LP, yielding clear CSF with negative cultures.

Conclusions

LCP is a safe and effective alternative for CSF collection in scenarios where LP is contraindicated. Our anatomical findings, supported by the illustrative case, delineate consistent landmarks and suggest minimal anatomical variation that might necessitate slight adjustments, particularly for D3 in older women. The detailed technical approach combined with anatomical precision enhances the safety and efficacy of LCP, making it a valuable tool in neurosurgical practice.