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Delayed Ulnar Nerve Palsy Secondary to Cubitus Varus Deformity. Report of Two Cases Shuji Asai 1 , Shirou Urata 1 , Kazuhiro Suzuki 1 , Kenji Tanaka 1 , Hiroshi Kawakami 1 , Takeshi Oguchi 1 , Akiko Yoshida 1 , Ryoko Furukawa 1 1Department of Orthopaedic Surgery, Anjyo Kosei Hospital Keyword: delayed ulnar nerve palsy , 遅発性尺骨神経麻痺 , cubitus varus deformity , 内反肘変形 , fibrous band pp.591-595
Published Date 2005/5/1
DOI https://doi.org/10.11477/mf.1408100111
  • Abstract
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 It is well known that cubitus varus deformity often causes late ulnar nerve palsy. We encountered two rare cases of delayed ulnar nerve palsy secondary to cubitus varus deformity carsed by a supracondylar fracture of the humerus. Both patients had an ulnar sensory impairment and intrinsic muscle atrophy. Their carrying angle was 30 degrees and 20 degrees, respectively, of varus. Preoperative measurement of motor nerve conduction velocity by the “inching” technique revealed localized impaired conduction around the cubital tunnel in both cases. At surgery a fibrous band was observed to have compressed the ulnar nerve. Surgical treatment consisted of release of the fibrous band in both patients and corrective osteotomy in one of them. Satisfactory results were obtained in both cases. We concluded that the main etiologic factor in the ulnar nerve palsy in both cases was compression of the ulnar nerve by a fibrous band.


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電子版ISSN 1882-1286 印刷版ISSN 0557-0433 医学書院

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