School of Physical Therapy, Faculty of Health and Medical Care, Saitama Medical University, Saitama, Japan; Department of Anatomy, School of Life Dentistry at Niigata, The Nippon Dental University, Niigata, Japan; Department of Anatomy, School of Medicine, Aichi Medical University, Aichi, Japan.
Department of Anatomy and Life Structure, School of Medicine, Juntendo University, Tokyo, Japan.
Ann Anat. 2021 Jan;233:151592. doi: 10.1016/j.aanat.2020.151592. Epub 2020 Sep 6.
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.
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.
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.
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.
评估腰丛的节段性变化对于神经学诊断至关重要。在本研究中，我们研究了腰丛的节段性组成与第 12 肋骨长度之间的关系。
为了评估腰丛的节段性变化，我们将分叉神经（Nf）用作丛排列的指标，该神经形成腰骶丛的边界。
根据 Nf 是否起源于 L3 和 L4 的腹侧支（Nf L3 + L4 组）、L4（Nf L4 组）、L4 和 L5（Nf L4 + L5 组）或 L5（Nf L5 组），将 Nf 的节段性变化分为四组。Nf L3 + L4 组与第 12 肋骨短有关，而 Nf L4 + L5 组和 Nf L5 组与第 12 肋骨长有关。这些发现表明，腰丛的节段性变化与第 12 肋骨的长度有关。
因此，通过测量第 12 肋骨的长度，可以非侵入性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。
