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| Quantitative Assessment of the Medial Nerve after Surgical Carpal Tunnel Release: Clinical Significance of Follow-up Ultrasonography |
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| Chang Woo Lee, M.D. Chang Woo Lee, M.D., Sung Moon Lee, M.D., Hee Jung Lee, M.D., Sung Koo Woo, M.D., Hong Kim, M.D. |
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| Department of Diagnostic Radiology, Keimyung University School of Medicine |
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| PURPOSE : To investigate the usefulness of postoperative follow-up ultrasonography following
surgical treatment of carpal tunnel syndrome (CTS).
MATERIALS and METHODS : Prospective postoperative follow-up ultrasonographic examinations
were performed one, two and three months after surgery in twenty five wrists from nineteen
patients who received the surgical carpal tunnel release. Symptoms were improved within one
month following surgery in 21 cases (group 1). However, no relief or worsening of symptoms
were noted in four patients after surgical decompression (group 2). The cross-sectional area of
the median nerve was measured in three places: 1) the transverse plane at the level of the radiocarpal
joint (RCJ), 2) the midlevel of the lunate and 3) the mid-level of the capitate. The ratios
of preoperative and postoperative cross-sectional areas in each level were compared.
RESULTS : The ratio of areas at each level showed that the cross-sectional area of the median nerve
was decreased at the level of the RCJ and lunate in group 1 whereas it was either increased or
not changed at the level of the RCJ and lunate in group 2. This tendency was most prominent at
the mid-level of the lunate, especially on the one month follow-up examination. At the midlevel
of the capitate, the ratio was increased on one month followup but returned to the original
value three months after operation in both groups. However, an increase of the cross-sectional
area on the one month follow-up at the capitate level was more prominent in group 1.
CONCLUSION : The cross-sectional area of the median nerve after surgery showed a tendency to
show a decrease at the RCJ and mid-lunate level but an increase at the midcapitate level for
those who with successful decompression. This change was more prominent at the mid-lunate
level and can be evaluated one month after surgery. |
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| Keyword : Wrist, US, Wrist, injuries, Wrist, abnormalities, Nervous system, US |
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pdf파일 : k20200329.pdf 
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> Journal > Journal Search 
Journal of Korean Society of Ultrasound in Medicine 2001 ; 20 (4) : p.329-336
