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Intramuscular communicating branches in the flexor digitorum profundus: dissection and Sihler's staining

 Sung-Yoon Won  ;  Da-Yae Choi  ;  Jae-Gi Lee  ;  Kwan-Hyun Yoon  ;  Hyun-Ho Kwak  ;  Kyung-Seok Hu  ;  Hee-Jin Kim 
 SURGICAL AND RADIOLOGIC ANATOMY, Vol.32(3) : 285-289, 2010 
Journal Title
Issue Date
Aged ; Aged, 80 and over ; Cadaver ; Dissection ; Humans ; Median Nerve/anatomy & histology* ; Middle Aged ; Muscle, Skeletal/anatomy & histology ; Muscle, Skeletal/innervation* ; Muscle, Skeletal/surgery ; Staining and Labeling/methods* ; Ulnar Nerve/anatomy & histology* ; Upper Extremity/anatomy & histology ; Upper Extremity/innervation* ; Upper Extremity/surgery
Flexor digitorum profundus ; Innervation ; Communicating branches ; Sihler’s staining
PURPOSE: This study was designed to clarify the anatomy of the intramuscular communicating branch (ICb) between the median and ulnar nerves in the flexor digitorum profundus (FDP), and morphologically demonstrate the location of connection. METHODS: Twenty Korean cadavers were dissected and a further 8 were subjected to modified Sihler's staining to investigate the pattern of innervation of the ICb and the location of its communicating points in muscle. RESULTS: The median and ulnar nerves divided into small branches before entering FDP muscle. Of these small branches, one or two met inside the muscle. This communicating pattern could be classified into three types: type I, communicating branches in both the proximal and distal regions; type II, at least one communicating branch in the proximal region; type III, at least one communicating branch in the distal region. Of 20 dissected specimens, no case of type I was observed, but 3 cases of type II and 15 cases of type III were found. No ICbs at all were found in two of the dissected specimens. In eight stained specimens, one was classified as type I, two as type II, and five as type III. The proximal communicating branches were located at 34.1% from the interepicondylar line, inside the third muscle bundle. The distal communicating branches were located at 66.0% from the interepicondylar line, between third and fourth muscle bundles. CONCLUSIONS: These findings could provide critical anatomical information regarding the nerve distribution of FDP focused on the ICbs
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2. College of Dentistry (치과대학) > Dept. of Oral Biology (구강생물학교실) > 1. Journal Papers
Yonsei Authors
Kim, Hee Jin(김희진) ORCID logo https://orcid.org/0000-0002-1139-6261
Won, Sung Yoon(원성윤)
Lee, Jae Gi(이재기)
Choi, Da Yae(최다예)
Hu, Kyung Seok(허경석) ORCID logo https://orcid.org/0000-0002-9048-3805
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