Would adopting a revised landmark rule for the spinal level of the iliac crests improve the accuracy of lumbar level identification?

This is a secondary analysis of two previous systematic reviews demonstrating cephalad bias in using palpation to enumerate lumbopelvic levels, based on the conventional landmark rule that the spinal level of the palpated iliac crests=L4. Our study included 7 articles which enumerated lumbopelvic levels based on this rule, and furthermore reported data such that the direction and magnitude of errors could be abstracted from the article. The primary goal was to determine if enumeration accuracy would have improved had examiners known that the spinal level of palpated crests was closer to the L3-4 or L3 spinal level, as shown in our previous review.

Does the Gillet test assess sacroiliac motion or asymmetric one-legged stance strategies?

Objective: The purpose of this study was to quantify the extent to which apparent movements of the posterior superior iliac spine and sacral base areas Gillet sacroiliac motion testing were related to (a) degree of hip flexion and (b) the examiner's palpatory pressure.

Methods: A preliminary exploratory study quantified relative PSIS/S2 displacements in 10 sacroiliac joints among 5 asymptomatic subjects at 10° increments of hip flexion from 0-90°. A comprehensive follow-up asymptomatic study quantified PSIS/S2 displacements at 0° vs.

Systematic review and meta-analyses of the difference between the spinal level of the palpated and imaged iliac crests.

Objective: The purpose of this study was to undertake a systematic review of the literature to determine and compare, for patient sub-groups, the spinal level of the iliac crests as commonly measured through manual palpation and radiographic imaging procedures.

Methods: Relevant citations were retrieved by searching the PubMed, ICL, CINAHL, AMED, Osteopathic Research Web, OstMed, and MANTIS biomedical databases, and included articles were rated for quality. Search terms included Tuffier*, intercristal line, intercrestal line, Jacoby's line, lumbar spine, lumbar landmark, pelvic landmark, palpation, and TL (Tuffier's Line).