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Archives of Gynecology and Obstetrics

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01-05-2019 | General Gynecology

Laparoscopic pectopexy: a follow-up cyclic biomechanical analysis determining time to functional stability

Authors: A. Sauerwald, L. Langer, D. Ratiu, A. Prescher, M. Scaal, G. K. Noé, K. Wegmann, D. R. Bulian, C. Eichler

Published in: Archives of Gynecology and Obstetrics | Issue 5/2019

Abstract

Introduction

Pectopexy, a laparoscopic method for prolapse surgery, showed promising results in previous transient testing by this group. It was shown that a single suture, yielding an ultimate load of 35 N, was equivalent to continuous suturing. This was demonstrated in an in vitro cadaver study. This transient data were used to establish an elastic stress–strain envelope. It was now possible to proceed to dynamic in vitro analysis of this surgical method to establish time to functional stability.

Methods

Cyclic testing of this fixation method was performed on human female embalmed cadaver (cohort 1) and fresh, non-embalmed cadaver (cohort 2) pelvises. The testing envelope was 5–25 N at a speed of 1 mm/s. 100 load regulated cycles were applied.

Results

100 cycles were completed with each model; no overall system failure occurred. Steady state, i.e., functional stability was reached after 14.5 (± 2.9) cycles for the embalmed group and after 19.1 (± 7.2) cycles for the non-embalmed group. This difference was statistically significant p = 0.00025.

Conclusion

This trial showed in an in vitro cyclic testing of the pectopexy method that functional stability may be achieved after no more than 19.1 cycles of load exposure. When remaining within the established load envelope of below 25 N, patients do not need to fear global fixation failure. Testing did demonstrate differences in non-embalmed and embalmed cadaver testing. Embalmed cadaver testing tends to underestimate time to steady state by 26.3%.

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Title: Laparoscopic pectopexy: a follow-up cyclic biomechanical analysis determining time to functional stability
Authors: A. Sauerwald
L. Langer
D. Ratiu
A. Prescher
M. Scaal
G. K. Noé
K. Wegmann
D. R. Bulian
C. Eichler
Publication date: 01-05-2019
Publisher: Springer Berlin Heidelberg
Published in: Archives of Gynecology and Obstetrics / Issue 5/2019
Print ISSN: 0932-0067
Electronic ISSN: 1432-0711
DOI: https://doi.org/10.1007/s00404-019-05117-9

Keynote webinar | Spotlight on sleep in brain health

Springer Medicine

Laparoscopic pectopexy: a follow-up cyclic biomechanical analysis determining time to functional stability

Abstract

Introduction

Methods

Results

Conclusion

Keynote webinar | Spotlight on sleep in brain health

Springer Medicine

Abstract

Introduction

Methods

Results

Conclusion

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