We're unable to sign you in at this time. Please try again in a few minutes.
We were able to sign you in, but your subscription(s) could not be found. Please try again in a few minutes.
There may be a problem with your account. Please contact the AMA Service Center to resolve this issue.
Contact the AMA Service Center:
Telephone: 1 (800) 262-2350 or 1 (312) 670-7827  *   Email: subscriptions@jamanetwork.com
Error Message ......
Original Article |

Limitations to Knitted Synthetic Tubes as Vascular Prostheses

AMA Arch Surg. 1957;74(4):557-561. doi:10.1001/archsurg.1957.01280100075012.
Text Size: A A A
Published online


Since the report by Voorhees and associates in 1952 of the use of a weave of Vinyon-N as an artery substitute7 several materials have been used with good results. One of the common disadvantages is the lack of elasticity. To overcome this, Sanger and associates5,6 advocated knitting the grafts and have reported good results with knitted tubes of Orlon. The equivocal results obtained in this laboratory with knitted Orlon tubes replacing segments of the thoracic and abdominal aortas in 24 dogs have prompted this report.

Materials  Knitted Orion tubes * of three types were used. The abdominal aortic grafts were of two types. One was knitted with 48 stitches per inch of a 200 denier Orion (Fig. 1A) and had an air porosity † of 250. The other was knitted with 56 stitches per inch of a 200 denier Orlon and had an air porosity of 76 (Fig.


Sign in

Purchase Options

• Buy this article
• Subscribe to the journal
• Rent this article ?

First Page Preview

View Large
First page PDF preview





Also Meets CME requirements for:
Browse CME for all U.S. States
Accreditation Information
The American Medical Association is accredited by the Accreditation Council for Continuing Medical Education to provide continuing medical education for physicians. The AMA designates this journal-based CME activity for a maximum of 1 AMA PRA Category 1 CreditTM per course. Physicians should claim only the credit commensurate with the extent of their participation in the activity. Physicians who complete the CME course and score at least 80% correct on the quiz are eligible for AMA PRA Category 1 CreditTM.
Note: You must get at least of the answers correct to pass this quiz.
Please click the checkbox indicating that you have read the full article in order to submit your answers.
Your answers have been saved for later.
You have not filled in all the answers to complete this quiz
The following questions were not answered:
Sorry, you have unsuccessfully completed this CME quiz with a score of
The following questions were not answered correctly:
Commitment to Change (optional):
Indicate what change(s) you will implement in your practice, if any, based on this CME course.
Your quiz results:
The filled radio buttons indicate your responses. The preferred responses are highlighted
For CME Course: A Proposed Model for Initial Assessment and Management of Acute Heart Failure Syndromes
Indicate what changes(s) you will implement in your practice, if any, based on this CME course.


Some tools below are only available to our subscribers or users with an online account.

0 Citations

Sign in

Purchase Options

• Buy this article
• Subscribe to the journal
• Rent this article ?

Related Content

Customize your page view by dragging & repositioning the boxes below.