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Article

Potential Relationships between the Median Nerve Cross-Sectional Area and Physical Characteristics in Unilateral Symptomatic Carpal Tunnel Syndrome Patients

by
Akira Ikumi
1,
Yuichi Yoshii
2,*,
Takamasa Kudo
3,
Sho Kohyama
3,
Takeshi Ogawa
4,
Yuki Hara
5 and
Tomoo Ishii
2
1
Department of Orthopaedic Surgery, Tsukuba University Hospital, Tsukuba 305-8576, Japan
2
Department of Orthopaedic Surgery, Tokyo Medical University Ibaraki Medical Center, Ami 300-0395, Japan
3
Department of Orthopaedic Surgery, Kikkoman General Hospital, Noda 278-0005, Japan
4
Department of Orthopaedic Surgery, Mito Medical Center Hospital, Ibaraki 311-3193, Japan
5
Department of Orthopaedic Surgery, National Center of Neurology and Psychiatry, Kodaira 187-8551, Japan
*
Author to whom correspondence should be addressed.
J. Clin. Med. 2023, 12(7), 2515; https://doi.org/10.3390/jcm12072515
Submission received: 10 February 2023 / Revised: 25 March 2023 / Accepted: 26 March 2023 / Published: 27 March 2023
(This article belongs to the Section Orthopedics)
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Abstract

Background: The present study investigated the relationships between the median nerve cross-sectional area (CSA) and physical characteristics in patients with unilateral symptomatic carpal tunnel syndrome (CTS). Methods: Height, weight, body mass index (BMI), disease duration, results of electrodiagnostic testing (EDX), and median nerve CSA at the level of the wrist crease were recorded in 81 patients with CTS who presented with symptoms on only one side. Correlation coefficients between median nerve CSA and physical characteristics, disease duration, and results of EDX were analyzed. Results: Median nerve CSA at the wrist crease (mm2) was significantly larger on the symptomatic side (14.1 ± 3.8) than on the asymptomatic side (11.5 ± 2.9). Median nerve CSA correlated with body weight (correlation coefficient = 0.39) and BMI (correlation coefficient = 0.44) on the asymptomatic side, but not on the symptomatic side. These correlations were slightly stronger in females (correlation coefficient = 0.46) than in males (correlation coefficient = 0.40). No correlations between median nerve CSA and disease duration and the results of EDX were observed in both sides. Conclusions: In patients with unilateral symptomatic CTS, median nerve CSA correlated with BMI only on the asymptomatic side. The present results suggest that the relationship between median nerve CSA and BMI in CTS is significant until symptom onset but may be masked by edema and pseudoneuroma after its onset. A higher BMI is associated with a larger CSA of the median nerve, which may be a risk factor for the development of CTS.
Keywords: carpal tunnel syndrome; cross-sectional area; physical characteristics; ultrasonography; unilateral symptom carpal tunnel syndrome; cross-sectional area; physical characteristics; ultrasonography; unilateral symptom

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MDPI and ACS Style

Ikumi, A.; Yoshii, Y.; Kudo, T.; Kohyama, S.; Ogawa, T.; Hara, Y.; Ishii, T. Potential Relationships between the Median Nerve Cross-Sectional Area and Physical Characteristics in Unilateral Symptomatic Carpal Tunnel Syndrome Patients. J. Clin. Med. 2023, 12, 2515. https://doi.org/10.3390/jcm12072515

AMA Style

Ikumi A, Yoshii Y, Kudo T, Kohyama S, Ogawa T, Hara Y, Ishii T. Potential Relationships between the Median Nerve Cross-Sectional Area and Physical Characteristics in Unilateral Symptomatic Carpal Tunnel Syndrome Patients. Journal of Clinical Medicine. 2023; 12(7):2515. https://doi.org/10.3390/jcm12072515

Chicago/Turabian Style

Ikumi, Akira, Yuichi Yoshii, Takamasa Kudo, Sho Kohyama, Takeshi Ogawa, Yuki Hara, and Tomoo Ishii. 2023. "Potential Relationships between the Median Nerve Cross-Sectional Area and Physical Characteristics in Unilateral Symptomatic Carpal Tunnel Syndrome Patients" Journal of Clinical Medicine 12, no. 7: 2515. https://doi.org/10.3390/jcm12072515

APA Style

Ikumi, A., Yoshii, Y., Kudo, T., Kohyama, S., Ogawa, T., Hara, Y., & Ishii, T. (2023). Potential Relationships between the Median Nerve Cross-Sectional Area and Physical Characteristics in Unilateral Symptomatic Carpal Tunnel Syndrome Patients. Journal of Clinical Medicine, 12(7), 2515. https://doi.org/10.3390/jcm12072515

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