1. Perforation of a vein valve leaflet: A mechanism for incomplete valve incision during in situ bypass 
Michael J. Worsey, MBBS, William J. Sharp, MD, John D. Corson, MB, ChB, FRCS(Eng), FACS 
Journal of Vascular Surgery 
Volume 16, Issue 2, Pages (August 1992)
DOI: / (92)90121-N
Copyright © 1992 Society for Vascular Surgery and the North American Chapter, International Society for Cardiovascular Surgery Terms and Conditions

2. Fig. 1
A and B. Angioscopic pictures of valvulotome perforating posterior valve leaflet and after reversal engaging valve leaflet.
Journal of Vascular Surgery  , DOI: ( / (92)90121-N)
Copyright © 1992 Society for Vascular Surgery and the North American Chapter, International Society for Cardiovascular Surgery Terms and Conditions

3. Fig. 2
A, B, and C. Representation of correct position of valvulotome and positions as depicted in Fig. 1, A and B.
Journal of Vascular Surgery  , DOI: ( / (92)90121-N)
Copyright © 1992 Society for Vascular Surgery and the North American Chapter, International Society for Cardiovascular Surgery Terms and Conditions

4. Fig. 3
A and B. Schematic longitudinal section of correct and incorrect positions of valvulotome as shown in Fig. 2, A and B.
Journal of Vascular Surgery  , DOI: ( / (92)90121-N)
Copyright © 1992 Society for Vascular Surgery and the North American Chapter, International Society for Cardiovascular Surgery Terms and Conditions