A Method of Radial Nerve Length Measurement Based on Cadaveric Investigation

Jae Gyum Kim, Dasom Kim, Hung Youl Seok, Yoohwan Kim, Kyung Sook Yang, Im Joo Rhyu, Byung Jo Kim

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Objective To determine the most reliable method to measure the length of the radial nerve during a nerve conduction study (NCS). Design Cadaveric investigation. Setting A practical anatomy research laboratory in a university. Participants Fresh cadavers (N=10), with 1 cadaver for study design and 9 for data. Interventions Design of measurement methods using cadaver dissection and comparison of the measured values to the true length in 18 arms of 9 cadavers. Main Outcome Measures Four points (A, B, C, D) were determined: (A) proximal stimulation point in NCS; (B) point at the elbow crease; (C) point in the midforearm; and (D) distal stimulation point 5cm above the extensor indicis. The true length of the radial nerve between the stimulus points (points A and D) in NCS was compared with the measured values by summation of the straight line segments between those points with various combinations. The difference in root mean square error (RMSE) of the distance measured by each method compared with the true length was calculated to determine the best measurement method. Results The closest distance to the true length (28.7±2.8cm) in the cadaveric investigation was obtained using the summation of straight line segments between points A, B, and D (A-B-D, RMSE=.72cm), followed by the A-B-C-D distance (RMSE=.87cm) and the A-D distance (RMSE=1.38cm) methods, in sequence. The former 2 distance measurements were relatively closer to the true length than the latter measurement method. Conclusions Multiple segmentation measurement methods reflected the course of the radial nerve better than a single linear measurement method. We suggest that the distance measured using a stopover point near the lateral epicondyle between 2 stimulus points (A-B-D distance) is closer to the true length of the nerve.

Original languageEnglish
Pages (from-to)596-599
Number of pages4
JournalArchives of Physical Medicine and Rehabilitation
Volume98
Issue number3
DOIs
Publication statusPublished - 2017 Mar 1

Fingerprint

Radial Nerve
Cadaver
Neural Conduction
Elbow
Dissection
Anatomy
Arm
Outcome Assessment (Health Care)

Keywords

  • Cadaver
  • Electrodiagnosis
  • Nerve conduction
  • Radial nerve
  • Rehabilitation

ASJC Scopus subject areas

  • Physical Therapy, Sports Therapy and Rehabilitation
  • Rehabilitation

Cite this

A Method of Radial Nerve Length Measurement Based on Cadaveric Investigation. / Kim, Jae Gyum; Kim, Dasom; Seok, Hung Youl; Kim, Yoohwan; Yang, Kyung Sook; Rhyu, Im Joo; Kim, Byung Jo.

In: Archives of Physical Medicine and Rehabilitation, Vol. 98, No. 3, 01.03.2017, p. 596-599.

Research output: Contribution to journalArticle

Kim, Jae Gyum ; Kim, Dasom ; Seok, Hung Youl ; Kim, Yoohwan ; Yang, Kyung Sook ; Rhyu, Im Joo ; Kim, Byung Jo. / A Method of Radial Nerve Length Measurement Based on Cadaveric Investigation. In: Archives of Physical Medicine and Rehabilitation. 2017 ; Vol. 98, No. 3. pp. 596-599.
@article{714c338a1fec4fbb98cce8995d989d10,
title = "A Method of Radial Nerve Length Measurement Based on Cadaveric Investigation",
abstract = "Objective To determine the most reliable method to measure the length of the radial nerve during a nerve conduction study (NCS). Design Cadaveric investigation. Setting A practical anatomy research laboratory in a university. Participants Fresh cadavers (N=10), with 1 cadaver for study design and 9 for data. Interventions Design of measurement methods using cadaver dissection and comparison of the measured values to the true length in 18 arms of 9 cadavers. Main Outcome Measures Four points (A, B, C, D) were determined: (A) proximal stimulation point in NCS; (B) point at the elbow crease; (C) point in the midforearm; and (D) distal stimulation point 5cm above the extensor indicis. The true length of the radial nerve between the stimulus points (points A and D) in NCS was compared with the measured values by summation of the straight line segments between those points with various combinations. The difference in root mean square error (RMSE) of the distance measured by each method compared with the true length was calculated to determine the best measurement method. Results The closest distance to the true length (28.7±2.8cm) in the cadaveric investigation was obtained using the summation of straight line segments between points A, B, and D (A-B-D, RMSE=.72cm), followed by the A-B-C-D distance (RMSE=.87cm) and the A-D distance (RMSE=1.38cm) methods, in sequence. The former 2 distance measurements were relatively closer to the true length than the latter measurement method. Conclusions Multiple segmentation measurement methods reflected the course of the radial nerve better than a single linear measurement method. We suggest that the distance measured using a stopover point near the lateral epicondyle between 2 stimulus points (A-B-D distance) is closer to the true length of the nerve.",
keywords = "Cadaver, Electrodiagnosis, Nerve conduction, Radial nerve, Rehabilitation",
author = "Kim, {Jae Gyum} and Dasom Kim and Seok, {Hung Youl} and Yoohwan Kim and Yang, {Kyung Sook} and Rhyu, {Im Joo} and Kim, {Byung Jo}",
year = "2017",
month = "3",
day = "1",
doi = "10.1016/j.apmr.2016.08.464",
language = "English",
volume = "98",
pages = "596--599",
journal = "Archives of Physical Medicine and Rehabilitation",
issn = "0003-9993",
publisher = "W.B. Saunders Ltd",
number = "3",

}

TY - JOUR

T1 - A Method of Radial Nerve Length Measurement Based on Cadaveric Investigation

AU - Kim, Jae Gyum

AU - Kim, Dasom

AU - Seok, Hung Youl

AU - Kim, Yoohwan

AU - Yang, Kyung Sook

AU - Rhyu, Im Joo

AU - Kim, Byung Jo

PY - 2017/3/1

Y1 - 2017/3/1

N2 - Objective To determine the most reliable method to measure the length of the radial nerve during a nerve conduction study (NCS). Design Cadaveric investigation. Setting A practical anatomy research laboratory in a university. Participants Fresh cadavers (N=10), with 1 cadaver for study design and 9 for data. Interventions Design of measurement methods using cadaver dissection and comparison of the measured values to the true length in 18 arms of 9 cadavers. Main Outcome Measures Four points (A, B, C, D) were determined: (A) proximal stimulation point in NCS; (B) point at the elbow crease; (C) point in the midforearm; and (D) distal stimulation point 5cm above the extensor indicis. The true length of the radial nerve between the stimulus points (points A and D) in NCS was compared with the measured values by summation of the straight line segments between those points with various combinations. The difference in root mean square error (RMSE) of the distance measured by each method compared with the true length was calculated to determine the best measurement method. Results The closest distance to the true length (28.7±2.8cm) in the cadaveric investigation was obtained using the summation of straight line segments between points A, B, and D (A-B-D, RMSE=.72cm), followed by the A-B-C-D distance (RMSE=.87cm) and the A-D distance (RMSE=1.38cm) methods, in sequence. The former 2 distance measurements were relatively closer to the true length than the latter measurement method. Conclusions Multiple segmentation measurement methods reflected the course of the radial nerve better than a single linear measurement method. We suggest that the distance measured using a stopover point near the lateral epicondyle between 2 stimulus points (A-B-D distance) is closer to the true length of the nerve.

AB - Objective To determine the most reliable method to measure the length of the radial nerve during a nerve conduction study (NCS). Design Cadaveric investigation. Setting A practical anatomy research laboratory in a university. Participants Fresh cadavers (N=10), with 1 cadaver for study design and 9 for data. Interventions Design of measurement methods using cadaver dissection and comparison of the measured values to the true length in 18 arms of 9 cadavers. Main Outcome Measures Four points (A, B, C, D) were determined: (A) proximal stimulation point in NCS; (B) point at the elbow crease; (C) point in the midforearm; and (D) distal stimulation point 5cm above the extensor indicis. The true length of the radial nerve between the stimulus points (points A and D) in NCS was compared with the measured values by summation of the straight line segments between those points with various combinations. The difference in root mean square error (RMSE) of the distance measured by each method compared with the true length was calculated to determine the best measurement method. Results The closest distance to the true length (28.7±2.8cm) in the cadaveric investigation was obtained using the summation of straight line segments between points A, B, and D (A-B-D, RMSE=.72cm), followed by the A-B-C-D distance (RMSE=.87cm) and the A-D distance (RMSE=1.38cm) methods, in sequence. The former 2 distance measurements were relatively closer to the true length than the latter measurement method. Conclusions Multiple segmentation measurement methods reflected the course of the radial nerve better than a single linear measurement method. We suggest that the distance measured using a stopover point near the lateral epicondyle between 2 stimulus points (A-B-D distance) is closer to the true length of the nerve.

KW - Cadaver

KW - Electrodiagnosis

KW - Nerve conduction

KW - Radial nerve

KW - Rehabilitation

UR - http://www.scopus.com/inward/record.url?scp=85013288100&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85013288100&partnerID=8YFLogxK

U2 - 10.1016/j.apmr.2016.08.464

DO - 10.1016/j.apmr.2016.08.464

M3 - Article

C2 - 27612940

AN - SCOPUS:85013288100

VL - 98

SP - 596

EP - 599

JO - Archives of Physical Medicine and Rehabilitation

JF - Archives of Physical Medicine and Rehabilitation

SN - 0003-9993

IS - 3

ER -