line called the Tuffier's line is conventionally used to identify the vertebral interspace used for spinal anaesthesia.
The line drawn across the superior aspect of the crests is usually called Tuffier's line (TL) (3), but has also been called the intercrestal line (4-6), intercristal line (7-10) or Jacoby's line (11).
Searches were conducted using the following terms and/or combinations of them: Tuffier (*), intercristal line, intercrestal line, Jacoby's line, lumbar spine, lumbar landmark, pelvic landmark, palpation, and TL.
Based on ultrasound/MRI visualization of the intertransverse ligament (posteriorly) and the lumbosacral ligament (anteriorly) marking out the osteofibrotic tunnel, the tip of the block needle was placed in the anticipated position for needle insertion caudad to the intercristal
(34) With the patient in the lateral decubitus position with hips flexed, a marking pen was used to draw the intercristal
line connecting the iliac crests.
1 SPINAL CORD ENDS AT L 3 L1 L1 2 DURAL SAC ENDS AT S3 S2 S2 3 INTERCRISTAL
LINE L5-S1 L4-5 L3-4 CORRESPONDS TO 4 CSF VOLUME NA 4ML/KG 2ML/KG 5 Intracranial vs.
The site of needle insertion was determined by drawing a line connecting the iliac crests (intercristal
line i.e, Toffier line).
Overactivation of NMDAreceptors increases mitochondrial fragmentation, arrests mitochondrial fusion, and causes several ultrastructural defects in the inner mitochondrial membrane, such as a widening of intercristal
Given the variability of the location of the intercristal
line (line of Tuffier (6)), there may be errors when identifying the intervertebral spaces in up to 30% of patients (16).
Many studies have shown that clinical estimation of the lumbar intervertebral level using surface landmarks, such as the intercristal
line, is inaccurate.
Several investigators have disagreed with Otto's description of his original specimen as having "a normal size and shape in general." Overgaard (12) described a typical "clover leaf" appearance on radiographs and several other investigators found a widened intercristal
distance on anteroposterior pelvic radiographs.
line is drawn at L4/L5, and another parallel with the spine through the Posterior Superior Iliac Spine (PSIS).