Background

Evaluating segmental variations in the lumbar plexus is crucial for neurological diagnosis. In the present study, we examined the relationship between the segmental composition of the lumbar plexus and length of the 12th rib.

Procedures

To evaluate segmental variations in the lumbar plexus, the furcal nerve (Nf) which forms the boundary between the lumbar and sacral plexus, was used as an index of plexus arrangement.

Main findings

Segmental variations in the Nf were classified into four groups on the basis of whether the Nf originated from the ventral rami of L3 and L4 (Nf L3 + L4 group), L4 (Nf L4 group), L4 and L5 (Nf L4 + L5 group), or L5 (Nf L5 group). The Nf L3 + L4 group was associated with short 12th rib, and groups Nf L4 + L5 and Nf L5 were associated with long 12th rib. These findings suggest that the segmental variations in the lumbar plexus are related to the length of the 12th rib.

Conclusions

Therefore, the segmental variations in the lumbar plexus can be evaluated non-invasively and easily by measuring the length of the 12th rib. This may contribute to the diagnosis and treatment of various lumbar radiculopathies.

中文翻译：

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人体腰丛节段性变异与第 12 肋骨长度的关系。

背景

评估腰丛的节段性变异对于神经学诊断至关重要。在本研究中，我们检查了腰丛的节段组成与第 12 肋骨长度之间的关系。

程序

为了评估腰神经丛的节段性变化，形成腰神经丛和骶神经丛之间边界的神经根 (Nf) 被用作神经丛排列的指标。

主要发现

根据Nf是否起源于L3和L4（Nf L3 + L4组）、L4（Nf L4组）、L4和L5（Nf L4 + L5组）的腹侧支，将Nf的节段变异分为四组) 或 L5（Nf L5 组）。Nf L3 + L4 组与第 12 肋短相关，Nf L4 + L5 和 Nf L5 组与第 12 肋长相关。这些发现表明腰丛的节段性变异与第 12 肋骨的长度有关。

结论

因此，通过测量第 12 肋骨的长度，可以无创且轻松地评估腰丛的节段性变化。这可能有助于各种腰椎神经根病的诊断和治疗。