Abstract
Article: Comparing Shape Categorization to Circularity Measurement in the Evaluation of Median Nerve Compression Using Sonography
Authors: Buwen Yao, MBBS, Kayla Gan, Annie Lee, and Shawn C. Roll, PhD, OTR/L, RMSKS, FAOTA, FAIUM
Category: Musculoskeletal [MSK]
Credit: 0.75 SDMS CME Credit
Objectives: After studying the article entitled “Comparing Shape Categorization to Circularity Measurement in the Evaluation of Median Nerve Compression Using Sonography,” you will be able to:
Describe the subjective categorization of nerve shape
Understand how circularity of the median nerve is measured
Learn the potential of subjective categorization of nerve shape as a valid technique for evaluation of the median nerve to provide additional information regarding nerve compression
What is the most common nerve entrapment syndrome of the upper extremity? Radial nerve compression syndrome Meralgia paresthetica Suprascapular nerve entrapment Carpal tunnel syndrome
What is the cause of most cases of carpal tunnel syndrome? Idiopathic Rheumatoid arthritis Diabetes Pregnancy
Which measurement is calculated by the formula 4πCSA/perimeter2? Flattening ratio Circularity Cross-sectional area Insall-Salvati ratio
Which shape of the median nerve may serve as an indicator of increased compression? Flatter than round Circular Taller than wide Thinned
At which bony landmark was the transducer placed to obtain short-axis views of the median nerve? Hamate Trapezium Pisiform Lunate
In which three positions were the fingers while imaging the median nerve? Extended, gripping, and flexed Extended, flexed, and gripping Resting, pinching, and extended Resting, gripping, and pinching
In this study, the shape of the median nerve in the carpal tunnel could be easily distinguished as irregular by tracing: Outside the hyperechoic border Inside the hypoechoic border Inside the hyperechoic border Outside the hypoechoic border
Footnotes