척골운동신경전도검사에서 주관절 분절의 길이 측정에 미치는 줄자 두께의 영향
Width of A Tapeline Influences on Measurement of Across Elbow Segment in Ulnar Motor Conduction Study
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Objectives: We sometimes experience that a tapeline is partially folded in fully flexed elbow position, which may cause a considerable error in the measurement of across-elbow conduction velocity. This study is purposed to demonstrate the difference in distance measure of AE segment according to different widths of tapeline. Methods: We performed ulnar motor segmental conduction study with standard technique in twenty healthy subjects (average 29.8±6.35 years, male:female=13:7). Distance of AE segment was measured with three different widths (5 mm, 10 mm, 15 mm) of tapeline at two different elbow positions (90 degree and 135 degree of elbow flexion) by two separate examiners. Results: In 90 degree of elbow-flexion, distances of AE segment were 10.4±0.29, 10.7±0.34, and 10.9± 0.31 cm with 5-, 10- and 15 mm-width tapeline, which were significantly different (p<0.05). In 135 degree of elbow-flexion, distances of AE segment were 10.7±0.43, 11.0±0.45, and 11.4±0.53 cm with 5-, 10- and 15 mm-width tapeline, which were also significantly different (p<0.05). Conclusion: There is a room for considerable error (5~6%) in the measurement of AE conduction velocity according to width of a tapeline. Therefore width of a tapeline also should be considered for establishment of normative data in segmental ulnar motor conduction study.
Abstract
Objectives: We sometimes experience that a tapeline is partially folded in fully flexed elbow position, which may cause a considerable error in the measurement of across-elbow conduction velocity. This study is purposed to demonstrate the difference in distance measure of AE segment according to different widths of tapeline. Methods: We performed ulnar motor segmental conduction study with standard technique in twenty healthy subjects (average 29.8±6.35 years, male:female=13:7). Distance of AE segment was measured with three different widths (5 mm, 10 mm, 15 mm) of tapeline at two different elbow positions (90 degree and 135 degree of elbow flexion) by two separate examiners. Results: In 90 degree of elbow-flexion, distances of AE segment were 10.4±0.29, 10.7±0.34, and 10.9± 0.31 cm with 5-, 10- and 15 mm-width tapeline, which were significantly different (p<0.05). In 135 degree of elbow-flexion, distances of AE segment were 10.7±0.43, 11.0±0.45, and 11.4±0.53 cm with 5-, 10- and 15 mm-width tapeline, which were also significantly different (p<0.05). Conclusion: There is a room for considerable error (5~6%) in the measurement of AE conduction velocity according to width of a tapeline. Therefore width of a tapeline also should be considered for establishment of normative data in segmental ulnar motor conduction study.
참고문헌 (8)
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