Document Detail

The flat spot of the proximal ulna: a useful anatomic landmark in total elbow arthroplasty.
MedLine Citation:
PMID:  14997100     Owner:  NLM     Status:  MEDLINE    
The relationship between the flat subcutaneous dorsal surface (flat spot) of the ulna and the anatomic flexion axis of the elbow was investigated in 68 cadaveric ulnae. The flat spot and the guiding ridge of the greater sigmoid notch were digitized with an electromagnetic tracking device. The area of the flat spot, as well as its angle with the plane of the greater sigmoid notch, was calculated. The size of the flat spot was variable but was found to be nearly perpendicular to the plane of the greater sigmoid notch (mean, 89.8 degrees +/- 6.5 degrees ). This indicates that the subcutaneous dorsal surface of the proximal ulna is a useful landmark to assist the surgeon intraoperatively to orient the ulnar component axially in total elbow arthroplasty.
Naven Duggal; Cynthia E Dunning; James A Johnson; Graham J W King
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of shoulder and elbow surgery / American Shoulder and Elbow Surgeons ... [et al.]     Volume:  13     ISSN:  1058-2746     ISO Abbreviation:  J Shoulder Elbow Surg     Publication Date:    2004 Mar-Apr
Date Detail:
Created Date:  2004-03-03     Completed Date:  2004-06-25     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  9206499     Medline TA:  J Shoulder Elbow Surg     Country:  United States    
Other Details:
Languages:  eng     Pagination:  206-7     Citation Subset:  IM    
Bioengineering Research Laboratory, The Hand and Upper Limb Centre, St Joseph's Health Care London, 268 Grosvenor Street, London, Ontario N6A 4L6, Canada.
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MeSH Terms
Arthroplasty, Replacement*
Elbow Joint / anatomy & histology,  surgery*
Ulna / anatomy & histology*

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