Document Detail

Topographical anatomy of the posterior elbow region during fetal development.
MedLine Citation:
PMID:  8059963     Owner:  NLM     Status:  MEDLINE    
We studied the topography of the elbow region with special regard to the ulnar nerve during fetal life. Plastinated 600 microns thick sections through the right and left arms of ten fetuses with a crown-rump length (CRL) of 105 to 360 mm and of a newborn infant were investigated. The ulnar groove does not appear on the dorsal side of the medial humeral epicondyle earlier than at a crown-rump length of 130 mm. It provides the entrance into a formerly described fibro-osseous tunnel called the cubital tunnel. Its floor is formed by the posterior bundle of the ulnar collateral ligament, which bulges medially on flexion of the elbow joint. Up to 270 mm CRL it is composed of rather loosely arranged connective tissue fibres. Later on, its fibres are densely packed and show a parallel orientation. The ulnar nerve is pushed medially but remains behind the medial epicondyle. None of the specimens showed displacement to the anterior site of the elbow joint. An aponeurotic arch bridging the humerus and ulna and covering the ulnar nerve medially could not be identified. The findings in the newborn infant did not reveal any significant differences compared to the fetal specimens.
M M Reidenbach; H M Schmidt
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Annals of anatomy = Anatomischer Anzeiger : official organ of the Anatomische Gesellschaft     Volume:  176     ISSN:  0940-9602     ISO Abbreviation:  Ann. Anat.     Publication Date:  1994 Jun 
Date Detail:
Created Date:  1994-09-12     Completed Date:  1994-09-12     Revised Date:  2005-05-18    
Medline Journal Info:
Nlm Unique ID:  100963897     Medline TA:  Ann Anat     Country:  GERMANY    
Other Details:
Languages:  eng     Pagination:  209-16     Citation Subset:  IM    
Department of Anatomy, Rheinische Friedrich-Wilhelms-Universität Bonn, Germany.
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MeSH Terms
Elbow Joint / anatomy & histology*,  cytology,  embryology
Embryonic and Fetal Development*
Humerus / anatomy & histology,  embryology
Infant, Newborn
Ulnar Nerve / anatomy & histology,  embryology

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