Psoas proximal insertion as a simple and reliable landmark for numbering lumbar vertebrae on MRI of the lumbar spine

Ropars, François; Mesrar, Jawad; Querellou, Solène; Rousset, J.; Garetier, Marc

doi:10.1007/s00330-018-5798-z

Cited by 6 publications

(4 citation statements)

References 25 publications

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“…In both groups, it was observed that it originated from T12 and L1 levels with similar rates, frequently at L1 levels. In the study of François et al MRI of 477 patients, 81.4% of 43 patients with LSTV anatomy, psoas origin was detected in L1 vertebrae [14]. This ratio is 79.6% in our study with 93 LSTV cases, and it is similar to the control group.…”

Section: Discussionsupporting

confidence: 83%

Untitled

2019

NMRR

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Objectives: In this study we aimed to evaluate any reliable marker on MRI studies for vertebral enumeration without any need to whole spine imaging.Background: Lumbosacral transitional vertebra (LSTV) is an anatomical variation that is mostly incidentally detected in routine spinal magnetic resonance imaging (MRI) studies. Its detection and awareness have great importance especially for planning of an interventional procedure. Methods:We retrospectively evaluated 899 lumbar MRI examinations. Vertebral levels of aortic bifurcation (AB), celiac trunk (CT), superior mesenteric artery (SMA), right renal artery (RRA), left renal artery (LRA), inferior vena cava (IVC) confluence), 12th costovertebral junction and the origin level of psoas muscle were evaluated.

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Section: Discussionsupporting

confidence: 83%

Untitled

2019

NMRR

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“…The reported incidences of numerical variations of lumbar vertebrae and that of lumbosacral transitional vertebrae were 3.3% to 5.5% and 7.7% to 10.6%, respectively. [13][14][15][16][17] The preoperative recognition of these lumbosacral variations is crucial to prevent wrong-level surgery. Navigation software is not only able to simulate whether the S2AI screw can be inserted, but also is able to detect lumbosacral transitional vertebrae.…”

Section: Discussionmentioning

confidence: 99%

Extra-articular Portion of the Sacroiliac Joint—Between the Sacral and Pelvic Tuberosities: An Anatomical Guide for the S2-Alar-Iliac Screw Trajectory

Tatara

Niimura

Sekiya

et al. 2020

Global Spine Journal

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Study Design: A novel technique for S2-alar-iliac (S2AI) screw placement was analyzed. Objectives: Accurate confirmation of the S2AI screw trajectory with free-hand techniques is not simple, although some anatomical landmarks have been reported. To overcome the drawback, we aimed to introduce our technique for S2AI screw placement assisted with a guidewire using a new anatomical landmark. Methods: A total of 104 S2AI screws of 52 patients who underwent S2AI screw placement were investigated. Navigation software was used to simulate S2AI screw placement preoperatively. Screw placement was performed with the nonfluoroscopic free-hand technique. In this technique, a guidewire is inserted into the ilium from the extra-articular portion of the sacroiliac joint just lateral to the ideal screw entry point toward the tip of the greater trochanter and guides the screw trajectory. If the direction of the guidewire is satisfactory, all procedures of screw insertion are performed accordingly. The screw accuracy was assessed with computed tomography. Results: The modal size of the screw was 9.5 mm × 90 mm. The average horizontal angle was 42.0° (SD = 5.1°) on the right and 40.7° (SD = 4.7°) on the left. Of the 104 screws, 4 screws (3.9%) breached dorsally. No screw-related complication was observed. Conclusions: Because the guidewire can be inserted at an angle according to the individual morphology of the sacroiliac joint, it will be a reliable guide for the screw trajectory. This technique with a guidewire would help improve the accuracy of S2AI screw placement.

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“…El origen del músculo psoas en caso de sacralización se origina en los niveles T12 o T12-L1 (95.7%), similar al grupo de segmentación normal; en caso de lumbarización, en L1 o L1-L2 (66.7%) 14 . En series de RM se encontró que la inserción proximal fue en L1 en el 94%, por lo que algunos consideran que se trata de un hito confiable 15 .…”

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Síndrome de Bertolotti. Una causa importante de dolor lumbar

Vidaurre-Herrera¹,

Rojas²

2021

ARM

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La presencia de megaapófisis en «vértebras de transición lumbosacra» cuando se asocian con dolor crónico de espalda baja componen el síndrome de Bertolotti, el cual debe considerarse en pacientes adultos jóvenes. Una vértebra transicional modifica la anatomía y la biomecánica normal de la columna vertebral, y causa alteraciones en distintos niveles, principalmente facetario, sacroilíaco o discal.

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Psoas proximal insertion as a simple and reliable landmark for numbering lumbar vertebrae on MRI of the lumbar spine

Cited by 6 publications

References 25 publications

Untitled

Untitled

Extra-articular Portion of the Sacroiliac Joint—Between the Sacral and Pelvic Tuberosities: An Anatomical Guide for the S2-Alar-Iliac Screw Trajectory

Síndrome de Bertolotti. Una causa importante de dolor lumbar

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