| dc.contributor.advisor | Baums, Mike Herbert PD Dr. | |
| dc.contributor.author | Sachs, Christian | |
| dc.date.accessioned | 2013-12-03T11:27:51Z | |
| dc.date.available | 2013-12-23T23:50:05Z | |
| dc.date.issued | 2013-12-03 | |
| dc.identifier.uri | http://hdl.handle.net/11858/00-1735-0000-0022-5D2F-2 | |
| dc.identifier.uri | http://dx.doi.org/10.53846/goediss-4191 | |
| dc.language.iso | deu | de |
| dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/ | |
| dc.subject.ddc | 610 | de |
| dc.title | Belastungsuntersuchungen von arthroskopischen und offenen Knotentypen unter Verwendung von hochfestem, polyfilem Nahtmaterial | de |
| dc.type | doctoralThesis | de |
| dc.title.translated | Mechanical testing of different knot types using high-performance suture material | de |
| dc.contributor.referee | Wachowski, Martin PD Dr. | |
| dc.date.examination | 2013-12-16 | |
| dc.description.abstracteng | 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. | de |
| dc.contributor.coReferee | Mausberg, Rainer Prof. Dr. | |
| dc.subject.ger | Nahtmaterialtestung | de |
| dc.subject.ger | zyklische Belastungen | de |
| dc.subject.ger | arthroskopische Knoten | de |
| dc.subject.ger | ultra hoch molekulargewichtiges Nahtmaterial | de |
| dc.subject.eng | Suture knots | de |
| dc.subject.eng | Security | de |
| dc.subject.eng | Biomechanics | de |
| dc.subject.eng | Ultra-high molecular weight polyethylene | de |
| dc.subject.eng | Cyclic loading | de |
| dc.identifier.urn | urn:nbn:de:gbv:7-11858/00-1735-0000-0022-5D2F-2-0 | |
| dc.affiliation.institute | Medizinische Fakultät | de |
| dc.subject.gokfull | Medizin | de |
| dc.description.embargoed | 2013-12-23 | |
| dc.identifier.ppn | 773355340 | |