Passive Knee Stability After Anterior Cruciate Ligament Reconstruction Using the Endobutton or ToggleLoc With ZipLoop as a Femoral Fixation Device: A Comparison of 1654 Patients From the Danish Knee Ligament Reconstruction Registry

Christian Asmus Peter Asmussen; Mikkel Lindegaard Attrup; Kristian Thorborg; Per Hölmich

doi:10.1177/2325967118778507

Passive Knee Stability After Anterior Cruciate Ligament Reconstruction Using the Endobutton or ToggleLoc With ZipLoop as a Femoral Fixation Device: A Comparison of 1654 Patients From the Danish Knee Ligament Reconstruction Registry

Christian Asmus Peter Asmussen, Mikkel Lindegaard Attrup, Kristian Thorborg, Per Hölmich

Department of Clinical Medicine

2 Citations (Scopus)

31 Downloads (Pure)

Abstract

Background: Biomechanical studies show varying results regarding the elongation of adjustable fixation devices. This has led to growing concern over the stability of the ToggleLoc with ZipLoop used in anterior cruciate ligament (ACL) reconstruction (ACLR) in vivo. Purpose/Hypothesis: The purpose of this study was to compare passive knee stability 1 year after ACLR in patients in whom the Endobutton or ToggleLoc with ZipLoop was used for femoral graft fixation. The hypothesis was that the ToggleLoc with ZipLoop would be inferior in knee stability to the Endobutton 1 year after primary ACLR. Study Design: Cohort study; Level of evidence, 2. Methods: Data from 3175 patients (Endobutton: n = 2807; ToggleLoc with ZipLoop: n = 368) were included from the Danish Knee Ligament Reconstruction Registry (DKRR) between June 2010 and September 2013. Data were retrieved from standardized ACL forms filled out by the operating surgeon preoperatively, during surgery, and at a clinical examination 1 year after surgery. Passive knee stability was evaluated using 1 of 2 arthrometers (Rolimeter or KT-1000 arthrometer) and the pivot-shift test. Using the same database, the number of reoperations performed up to 4 years after primary surgery was examined. Results: Full data were available for 1654 patients (Endobutton: n = 1538; ToggleLoc with ZipLoop: n = 116). ACLR with both devices resulted in increased passive knee stability (P <.001). Patients who received the ToggleLoc with ZipLoop were found to have a better preoperative (P =.005) and postoperative (P <.001) pivot-shift test result. No statistically significant difference regarding the number of reoperations (P =.086) or the time to reoperation (P =.295) was found. Conclusion: Patients who underwent fixation with the ToggleLoc with ZipLoop had improved passive knee stability 1 year after surgery, measured by anterior tibial translation and pivot-shift test results, similar to patients who underwent fixation with the Endobutton. No difference was seen in knee stability or reoperation rates between the 2 devices.

Original language	English
Article number	2325967118778507
Journal	Orthopaedic Journal of Sports Medicine
Volume	6
Issue number	6
Number of pages	6
ISSN	2325-9671
DOIs	https://doi.org/10.1177/2325967118778507
Publication status	Published - 1 Jun 2018

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Asmussen, C. A. P., Attrup, M. L., Thorborg, K., & Hölmich, P. (2018). Passive Knee Stability After Anterior Cruciate Ligament Reconstruction Using the Endobutton or ToggleLoc With ZipLoop as a Femoral Fixation Device: A Comparison of 1654 Patients From the Danish Knee Ligament Reconstruction Registry. Orthopaedic Journal of Sports Medicine, 6(6), [2325967118778507]. https://doi.org/10.1177/2325967118778507

Passive Knee Stability After Anterior Cruciate Ligament Reconstruction Using the Endobutton or ToggleLoc With ZipLoop as a Femoral Fixation Device : A Comparison of 1654 Patients From the Danish Knee Ligament Reconstruction Registry. / Asmussen, Christian Asmus Peter; Attrup, Mikkel Lindegaard; Thorborg, Kristian et al.

In: Orthopaedic Journal of Sports Medicine, Vol. 6, No. 6, 2325967118778507, 01.06.2018.

Research output: Contribution to journal › Journal article › Research › peer-review

Asmussen, CAP, Attrup, ML, Thorborg, K & Hölmich, P 2018, 'Passive Knee Stability After Anterior Cruciate Ligament Reconstruction Using the Endobutton or ToggleLoc With ZipLoop as a Femoral Fixation Device: A Comparison of 1654 Patients From the Danish Knee Ligament Reconstruction Registry', Orthopaedic Journal of Sports Medicine, vol. 6, no. 6, 2325967118778507. https://doi.org/10.1177/2325967118778507

Asmussen CAP, Attrup ML, Thorborg K , Hölmich P. Passive Knee Stability After Anterior Cruciate Ligament Reconstruction Using the Endobutton or ToggleLoc With ZipLoop as a Femoral Fixation Device: A Comparison of 1654 Patients From the Danish Knee Ligament Reconstruction Registry. Orthopaedic Journal of Sports Medicine. 2018 Jun 1;6(6):2325967118778507. doi: 10.1177/2325967118778507

Asmussen, Christian Asmus Peter ; Attrup, Mikkel Lindegaard ; Thorborg, Kristian et al. / Passive Knee Stability After Anterior Cruciate Ligament Reconstruction Using the Endobutton or ToggleLoc With ZipLoop as a Femoral Fixation Device : A Comparison of 1654 Patients From the Danish Knee Ligament Reconstruction Registry. In: Orthopaedic Journal of Sports Medicine. 2018 ; Vol. 6, No. 6.

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title = "Passive Knee Stability After Anterior Cruciate Ligament Reconstruction Using the Endobutton or ToggleLoc With ZipLoop as a Femoral Fixation Device: A Comparison of 1654 Patients From the Danish Knee Ligament Reconstruction Registry",

abstract = "Background: Biomechanical studies show varying results regarding the elongation of adjustable fixation devices. This has led to growing concern over the stability of the ToggleLoc with ZipLoop used in anterior cruciate ligament (ACL) reconstruction (ACLR) in vivo. Purpose/Hypothesis: The purpose of this study was to compare passive knee stability 1 year after ACLR in patients in whom the Endobutton or ToggleLoc with ZipLoop was used for femoral graft fixation. The hypothesis was that the ToggleLoc with ZipLoop would be inferior in knee stability to the Endobutton 1 year after primary ACLR. Study Design: Cohort study; Level of evidence, 2. Methods: Data from 3175 patients (Endobutton: n = 2807; ToggleLoc with ZipLoop: n = 368) were included from the Danish Knee Ligament Reconstruction Registry (DKRR) between June 2010 and September 2013. Data were retrieved from standardized ACL forms filled out by the operating surgeon preoperatively, during surgery, and at a clinical examination 1 year after surgery. Passive knee stability was evaluated using 1 of 2 arthrometers (Rolimeter or KT-1000 arthrometer) and the pivot-shift test. Using the same database, the number of reoperations performed up to 4 years after primary surgery was examined. Results: Full data were available for 1654 patients (Endobutton: n = 1538; ToggleLoc with ZipLoop: n = 116). ACLR with both devices resulted in increased passive knee stability (P <.001). Patients who received the ToggleLoc with ZipLoop were found to have a better preoperative (P =.005) and postoperative (P <.001) pivot-shift test result. No statistically significant difference regarding the number of reoperations (P =.086) or the time to reoperation (P =.295) was found. Conclusion: Patients who underwent fixation with the ToggleLoc with ZipLoop had improved passive knee stability 1 year after surgery, measured by anterior tibial translation and pivot-shift test results, similar to patients who underwent fixation with the Endobutton. No difference was seen in knee stability or reoperation rates between the 2 devices.",

author = "Asmussen, {Christian Asmus Peter} and Attrup, {Mikkel Lindegaard} and Kristian Thorborg and Per H{\"o}lmich",

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T1 - Passive Knee Stability After Anterior Cruciate Ligament Reconstruction Using the Endobutton or ToggleLoc With ZipLoop as a Femoral Fixation Device

T2 - A Comparison of 1654 Patients From the Danish Knee Ligament Reconstruction Registry

AU - Asmussen, Christian Asmus Peter

AU - Attrup, Mikkel Lindegaard

AU - Thorborg, Kristian

AU - Hölmich, Per

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N2 - Background: Biomechanical studies show varying results regarding the elongation of adjustable fixation devices. This has led to growing concern over the stability of the ToggleLoc with ZipLoop used in anterior cruciate ligament (ACL) reconstruction (ACLR) in vivo. Purpose/Hypothesis: The purpose of this study was to compare passive knee stability 1 year after ACLR in patients in whom the Endobutton or ToggleLoc with ZipLoop was used for femoral graft fixation. The hypothesis was that the ToggleLoc with ZipLoop would be inferior in knee stability to the Endobutton 1 year after primary ACLR. Study Design: Cohort study; Level of evidence, 2. Methods: Data from 3175 patients (Endobutton: n = 2807; ToggleLoc with ZipLoop: n = 368) were included from the Danish Knee Ligament Reconstruction Registry (DKRR) between June 2010 and September 2013. Data were retrieved from standardized ACL forms filled out by the operating surgeon preoperatively, during surgery, and at a clinical examination 1 year after surgery. Passive knee stability was evaluated using 1 of 2 arthrometers (Rolimeter or KT-1000 arthrometer) and the pivot-shift test. Using the same database, the number of reoperations performed up to 4 years after primary surgery was examined. Results: Full data were available for 1654 patients (Endobutton: n = 1538; ToggleLoc with ZipLoop: n = 116). ACLR with both devices resulted in increased passive knee stability (P <.001). Patients who received the ToggleLoc with ZipLoop were found to have a better preoperative (P =.005) and postoperative (P <.001) pivot-shift test result. No statistically significant difference regarding the number of reoperations (P =.086) or the time to reoperation (P =.295) was found. Conclusion: Patients who underwent fixation with the ToggleLoc with ZipLoop had improved passive knee stability 1 year after surgery, measured by anterior tibial translation and pivot-shift test results, similar to patients who underwent fixation with the Endobutton. No difference was seen in knee stability or reoperation rates between the 2 devices.

AB - Background: Biomechanical studies show varying results regarding the elongation of adjustable fixation devices. This has led to growing concern over the stability of the ToggleLoc with ZipLoop used in anterior cruciate ligament (ACL) reconstruction (ACLR) in vivo. Purpose/Hypothesis: The purpose of this study was to compare passive knee stability 1 year after ACLR in patients in whom the Endobutton or ToggleLoc with ZipLoop was used for femoral graft fixation. The hypothesis was that the ToggleLoc with ZipLoop would be inferior in knee stability to the Endobutton 1 year after primary ACLR. Study Design: Cohort study; Level of evidence, 2. Methods: Data from 3175 patients (Endobutton: n = 2807; ToggleLoc with ZipLoop: n = 368) were included from the Danish Knee Ligament Reconstruction Registry (DKRR) between June 2010 and September 2013. Data were retrieved from standardized ACL forms filled out by the operating surgeon preoperatively, during surgery, and at a clinical examination 1 year after surgery. Passive knee stability was evaluated using 1 of 2 arthrometers (Rolimeter or KT-1000 arthrometer) and the pivot-shift test. Using the same database, the number of reoperations performed up to 4 years after primary surgery was examined. Results: Full data were available for 1654 patients (Endobutton: n = 1538; ToggleLoc with ZipLoop: n = 116). ACLR with both devices resulted in increased passive knee stability (P <.001). Patients who received the ToggleLoc with ZipLoop were found to have a better preoperative (P =.005) and postoperative (P <.001) pivot-shift test result. No statistically significant difference regarding the number of reoperations (P =.086) or the time to reoperation (P =.295) was found. Conclusion: Patients who underwent fixation with the ToggleLoc with ZipLoop had improved passive knee stability 1 year after surgery, measured by anterior tibial translation and pivot-shift test results, similar to patients who underwent fixation with the Endobutton. No difference was seen in knee stability or reoperation rates between the 2 devices.

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DO - 10.1177/2325967118778507

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