Parameters of Iliopsoas Plane Immediately Caudal to the Indirect Tendon of Rectus Femoris in Axial Plane Measured on Magnetic Resonance Images in an Adult Eastern Asian Population

• Published in: Healthcare (Basel) 2022-12, Vol.11 (1), p.69
• Main Authors: Yeoh, Shang-Ru, Chou, Yen, Yang, Jin-Han, Chuang, Ching-Wei, Chan, Shun-Ming, Chen, Se-Yi, Hou, Jin-De, Lin, Jui-An
• Format: Article
• Language: English
• Subjects: Age; Analgesics; Asian people; Gender; Hip; iliopsoas plane; Ligaments; Magnetic resonance imaging; Measurement; Medical examination; Muscles; pain; parameters; quadriceps muscle: rectus femoris; Tendons; tendons: indirect; Thigh; Ultrasonic imaging; Variance analysis
• ISSN: 2227-9032; 2227-9032
• DOI: 10.3390/healthcare11010069

The iliopsoas plane (IP) is a fascial plane deep to the iliopsoas complex and is the target of several novel ultrasound-guided analgesic interventions for hip. Currently, limited information is known about its parameters. From the pelvic magnetic resonance (MR) images of an adult Eastern Asian population (n = 49), the IP width, depth, and needle-beam angle in the axial plane immediately caudal to the level of indirect tendon of rectus femoris (RF) were found to be 10.7 ± 1.6 mm, 48.5 ± 15.5 mm, and 84.2 ± 8.2 degrees, respectively. There was a statistically significant difference in the age categories for IP width, and older patients seemed to have wider IP. Our data may provide applications for the technical modification of ultrasound-guided iliopsoas plane block (IPB) in acute hip pain management and the future development of ultrasound-guided single-needle-entry radiofrequency neuroablation in chronic hip pain management.