• Deutsch
    • English
  • English 
    • Deutsch
    • English
  • Login
Item View 
  •   Home
  • Medizin
  • Human- und Zahnmedizin
  • Item View
  •   Home
  • Medizin
  • Human- und Zahnmedizin
  • Item View
JavaScript is disabled for your browser. Some features of this site may not work without it.

Belastungsuntersuchungen von arthroskopischen und offenen Knotentypen unter Verwendung von hochfestem, polyfilem Nahtmaterial

Mechanical testing of different knot types using high-performance suture material

by Christian Sachs
Doctoral thesis
Date of Examination:2013-12-16
Date of issue:2013-12-03
Advisor:PD Dr. Mike Herbert Baums
Referee:PD Dr. Martin Wachowski
Referee:Prof. Dr. Rainer Mausberg
crossref-logoPersistent Address: http://dx.doi.org/10.53846/goediss-4191

 

 

Files in this item

Name:Dissertation Sachs Baums 24.11.2013.pdf
Size:2.63Mb
Format:PDF
ViewOpen

The following license files are associated with this item:


Abstract

English

Abstract Purpose: This laboratory study aimed to evaluate the loop security, knot security, cyclic loading resistance and loadto- failure rate of three different knot types with establishing a new experimental set-up. Additionally, the mode of failure of each knot was evaluated. Methods: With the use of nonabsorbable, braided polyethylene sutures, USP size No. 2 [Hi-Fi ; ConMed Linvatec], the arthroscopic knot types Dines, SMC as well as the surgeon’s knot were tested using a material testing machine. The knots were tied openly as well as arthroscopically. The set-up enables testing of knot configurations while eliminating friction between knot loop and its suspension points. Including all test procedures, a total of 216 knots were tested. Results: All openly tied knot types and ten of each type of arthroscopically tied knots resisted against cyclic loading of 1,000 cycles. With subsequent load-to-failure testing, openly tied knot types achieved significantly higher values of tensile strength than arthroscopically tied knots. Regarding clinical failure, defined as an elongation of 3 mm, Dines knot reached highest loop as well as knot security. Knot slippage was the most common failure mechanism at an elongation of 3 mm, whereas suture breakage was evaluated most at an elongation of 6 mm. Conclusions: The new experimental set-up confirms the loop security of arthroscopic knot types. Using a knot pusher clinically is a key factor to attain this as compared to openly hand-tied techniques. The Dines knot presented the highest reliability. It may provide a secure tissue healing during rehabilitation and consequently can be recommended for clinical application.
Keywords: Suture knots; Security; Biomechanics; Ultra-high molecular weight polyethylene; Cyclic loading
Schlagwörter: Nahtmaterialtestung; zyklische Belastungen; arthroskopische Knoten; ultra hoch molekulargewichtiges Nahtmaterial
 

Statistik

Publish here

Browse

All of eDissFaculties & ProgramsIssue DateAuthorAdvisor & RefereeAdvisorRefereeTitlesTypeThis FacultyIssue DateAuthorAdvisor & RefereeAdvisorRefereeTitlesType

Help & Info

Publishing on eDissPDF GuideTerms of ContractFAQ

Contact Us | Impressum | Cookie Consents | Data Protection Information
eDiss Office - SUB Göttingen (Central Library)
Platz der Göttinger Sieben 1
Mo - Fr 10:00 – 12:00 h


Tel.: +49 (0)551 39-27809 (general inquiries)
Tel.: +49 (0)551 39-28655 (open access/parallel publications)
ediss_AT_sub.uni-goettingen.de
[Please replace "_AT_" with the "@" sign when using our email adresses.]
Göttingen State and University Library | Göttingen University
Medicine Library (Doctoral candidates of medicine only)
Robert-Koch-Str. 40
Mon – Fri 8:00 – 24:00 h
Sat - Sun 8:00 – 22:00 h
Holidays 10:00 – 20:00 h
Tel.: +49 551 39-8395 (general inquiries)
Tel.: +49 (0)551 39-28655 (open access/parallel publications)
bbmed_AT_sub.uni-goettingen.de
[Please replace "_AT_" with the "@" sign when using our email adresses.]