Ultrasound imaging of the ulnar nerve: Correlation of preoperative and intraoperative dimensions

Ultrasonography in ulnar neuropathy at the elbow: A critical review

“…Most investigators measure nerve size within the hyperechoic rim surrounding the nerve. This rim probably represents part of the epineurium surrounding the nerve, and therefore nerve dimensions measured by ultrasonography are different from the actual intraoperative nerve size 18, 19. During measurements, the transducer should be held perpendicular to the nerve to avoid measurement errors.…”

Validity and reliability of nerve and muscle ultrasound

“…With regard to nerve and muscle ultrasound, high validity indicates that typical measures, such as nerve cross‐sectional area (CSA) and muscle thickness, correlate well with actual measures, and there are few studies that have assessed this issue . One study demonstrated a poor correlation between ultrasonographic and intraoperative measurements of the ulnar nerve, but was potentially flawed by the imprecision of the intraoperative measurements . Reliability, which also has not been studied extensively in the field of nerve and muscle ultrasound, refers to both intrarater and interrater reliability of ultrasonographic measurements of nerves and muscles.…”

“…9,10 One study demonstrated a poor correlation between ultrasonographic and intraoperative measurements of the ulnar nerve, but was potentially flawed by the imprecision of the intraoperative measurements. 11 Reliability, which also has not been studied extensively in the field of nerve and muscle ultrasound, 12,13 refers to both intrarater and interrater reliability of ultrasonographic measurements of nerves and muscles. Although the experience of multiple international centers over the past 20 years has shown that nerve and muscle ultrasound is likely valid and reliable, we designed this study to systematically assess this issue in several nerves and muscles in the upper and lower limbs.…”

Comparative Study of Different Surgical Transposition Methods for Ulnar Nerve Entrapment at the Elbow

“…Wherever possible, concomitant vessels and branches of the ulnar nerve were preserved. 9 The isolated ulnar nerve was transposed underneath the subcutaneous tissue. Finally, a fascial relaxing suture was used to make a subcutaneous bed for the nerve and the skin was closed successively with non-absorbable sutures.…”