Three-dimensional topography of the acromion: A quantitative study and simulation of surgical alterations

R. Kelkar, W. W. Colman, G. A. Ateshian, L. J. Soslowsky, R. G. Pollock, E. L. Flatow, L. U. Bigliani, V. C. Mow

Research output: Contribution to conferencePaperpeer-review

Abstract

The three-dimensional geometry of the inferior surface of the acromion was studied. The undersurface of the acromion was within a class of geometric surfaces known as `saddle' surfaces. Focussed contact was demonstrated by a leading edge of the acromion on the supraspinatus insertion where cuff tears generally originate. Broad contact was seen on rotator cuff areas which are rarely involved in cuff disease. Flattening the distal end of the acromion was insufficient in guaranteeing impingement elimination. The elimination of impingement after the anterior third flattening suggested the existence of a specific location on the acromion posterior to which bone removal produces no additional mechanical benefit.

Original languageEnglish
Pages149-150
Number of pages2
StatePublished - 1995
Externally publishedYes
EventProceedings of the 1995 ASME International Mechanical Congress and Exposition - San Francisco, CA, USA
Duration: 12 Nov 199517 Nov 1995

Conference

ConferenceProceedings of the 1995 ASME International Mechanical Congress and Exposition
CitySan Francisco, CA, USA
Period12/11/9517/11/95

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