Spine Ultrasound Image Study of Spondylolisthesis Patient

Ultrasound Image Study to Evaluate the Optimal Angulation of Needle Insertion for Spinal Anesthesia in Patients With Spondylolisthesis

Status

Completed

Phases

Unknown

Study type

Observational

Source

ClinicalTrials.gov

Registry ID

NCT04426916

Enrollment

Registered

2020-06-11

Start date

2020-06-23

Completion date

2020-08-07

Last updated

2021-01-07

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Spondylolisthesis

Keywords

optimal angle

Brief summary

This study is to evaluate the anatomical characteristics of spondylolisthesis patients using spine ultrasound imaging. The optimal angle of spinal needle insertion for spinal anesthesia in spondylolisthesis patients was compared to that of normal patients without abnormal spinal anatomy.

Interventions

OTHERSpondylolisthesis

Spondylolisthesis at a single level

Study design

Observational model

CASE_CONTROL

Time perspective

PROSPECTIVE

Eligibility

Sex/Gender

ALL

Age

20 Years to No maximum

Healthy volunteers

Inclusion criteria

* Adult patients scheduled for elective orthopedic surgery. * with ASA physical status classification system I, II, III.

Exclusion criteria

* Patients with communication difficulties. * Patient who can not take a lateral decubitus position for spinal anesthesia. (e.g) fracture) * Patients with a medical history of spinal surgery. * Patients with significant spinal anatomical deformity any other than spondylolisthesis. (for spondylolisthesis patients group)

Design outcomes

Primary

Measure	Time frame	Description
The predicted optimal angle of spinal needle insertion for spinal anesthesia at the level of spondylolisthesis. (alpha 1)	Preanesthesia	The needle insertion angle where the height of ligamentum flavum/dura mater complex(LFD) is measured the longest in ultrasound image.
The predicted optimal angle of spinal needle insertion for spinal anesthesia at the one upper level of spondylolisthesis. (alpha 2)	Preanesthesia	The needle insertion angle where the height of LFD is measured the longest in ultrasound image.

Secondary

Measure	Time frame	Description
The height of LFD measured by ultrasound image.	Preanesthesia	The height of LFD at the interlaminar space in midline and paramedian ultrasonography view at the angle of alpha 1 & alpha 2.
The depth from skin (needle insertion point) to LFD.	Preanesthesia	The depth from skin to LFD at the interlaminar space in midline and paramedian ultrasonography view at the angle of alpha 1 & alpha 2.
The depth from skin (needle insertion point) to posterior longitudinal ligament(PLL).	Preanesthesia	The depth from skin to PLL at the interlaminar space in midline and paramedian ultrasonography view at the angle of alpha 1 & alpha 2.
Patients' gender, age, height, weight, BMI, etc.	Preanesthesia	gender, age, height, weight, BMI

Countries

South Korea

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 21, 2026