Morphometric measurement of lumbar pedicle in different regions: a systematic review

Abstract

Objective To collect the data of pedicle width and height in different areas, and to investigate the difference and variation rule of pedicle width and height. Methods Comprehensive search of PubMed, Ovid Medline, and Web of science databases was performed. Collected data were imported into SPSS, and one-way ANOVA test and post hoc test were used to determine whether there were statistical differences in pedicle width and height between the different regions. Results Oceania had the largest pedicle width and height, followed by Americans. West Asian had the largest pedicle width in Asia, followed by East and Southeast Asian, and Chinese and South Asian had similar pedicle width. Different from the variation pattern of pedicle width, the pedicle height of Chinese, East and Southeast Asian and West Asian in Asian range is similar, but the pedicle height of South Asian is significantly smaller than the first three, and has statistical significance. Conclusions People in different regions have similar patterns of variation in pedicle width and height even though they belong to different ethnic groups. This phenomenon is particularly prominent and pronounced in populations in geographically close areas, which may be related to inter-ethnic integration due to population movement between adjacent areas. There is a relationship between the morphological characteristics of the human lumbar pedicle and geographical location.

The Method of Portal Making in Lumbar Unilateral Biportal Endoscopic Surgery with Different Operative Approaches According to the Constant Anatomical Landmarks of the Lumbar Spine: A Review of the Literature

“…UBE-EFLIF technique comprises three portals, two of which are roughly 1.5 cm long and act as the endoscopic or working portal, positioned 2 cm outside the upper and lower pedicle. A supplementary portal, referred to as the “quarterback portal,” is created to facilitate the rotation of the cage to a horizontal orientation by making a 1 cm incision where the intervertebral space intersects the tangent line at the inner edge of the vertebral pedicle, 23 as seen in Figure 11.

Figure 11.The mainstream portal positions of the UBE-EFLIF approach 23 . (The dot size only provides a general indication and does not represent a specific proportion).

…”

“…

Figure 11. The mainstream portal positions of the UBE-EFLIF approach 23 . (The dot size only provides a general indication and does not represent a specific proportion).

…”

“…The subject of the above research pertained to persons residing in Asia, it is noteworthy to acknowledge that Asians, on a worldwide scale, often exhibit smaller vertebrae. 44 By analyzing the interconnections between anatomical landmarks in smaller vertebrae, it becomes possible to extrapolate these relationships to larger vertebrae (mean different ethnic groups). Consequently, the correlation between the inner edge of the pedicle and a location 1 cm away from the spinous process is established in individuals without abnormalities on a global scale.…”

A Novel Two-Step Method for Converting Lumbar Cortical Screw to Pedicle Screw: A Case Report

“…PS screws engage both cortical and trabecular bone, providing comprehensive fixation and enhancing stability, which may reduce the likelihood of screw failure. While studies evaluating CBT have been promising, justifying the increasing use of the technique, long-term studies of this approach have shown a relatively high failure rate [16][17][18][19]. Akpolat et al conducted a cadaveric study in 12 vertebrae from six cadaveric spines and found that CBT screws had a significantly decreased fatigue performance when compared to the PS screw control [12].…”