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KMID : 0860920110130010064
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Journal of the Korean Association EMG-Electrodiagnostic Medicine
2011 Volume.13 No. 1 p.64 ~ p.68
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Unilateral Femoral Neuropathy after Swimming with Breaststroke
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Kim Kweon-Young
Kang Jung-Hun
Choi Dae-Woo
Jang Jae-Hyouk
Na Jeong-Yeop
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Abstract
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Femoral nerve arises from the ventral rami of the second, third and fourth lumbar nerves and runs beneath
the inguinal ligament, into the thigh. The nerve can be compressed anywhere along its course, but it is
particularly susceptible at the iliopsoas groove and at the inguinal ligament. We experienced a 52 years
old female who had weakness in knee extension and hypoesthesia in medial aspect of thigh and calf after
swimming with breaststroke for several hours a day in a week. The diagnosis was established with clinical
findings, nerve conduction study and needle electromyography. The mechanism of neuropathy are
direct compressive irritation of nerve within inguinal ligament by sharp hip flexion and excessive stretch
on nerve due to hip abduction and external rotation during breaststroke. We should consider possibility of
femoral neuropathy in patient with weakness in knee extension or hypoesthesia in medial thigh and calf
after swimming with breaststroke and distinguish between radicular lesion and peripheral lesion by physical
exam and electrodiagnostic study.
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KEYWORD
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Femoral neuropathy , Breastroke , Electrodiagnostic study
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