A mechanical pivot-shift device for continuously applying defined loads to cadaveric knees

Verfasser / Beitragende:
[Mark Sena, Ryan DellaMaggioria, Jeffrey Lotz, Brian Feeley]
Ort, Verlag, Jahr:
2015
Enthalten in:
Knee Surgery, Sports Traumatology, Arthroscopy, 23/10(2015-10-01), 2900-2908
Format:
Artikel (online)
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024 7 0 |a 10.1007/s00167-015-3775-5  |2 doi 
035 |a (NATIONALLICENCE)springer-10.1007/s00167-015-3775-5 
245 0 2 |a A mechanical pivot-shift device for continuously applying defined loads to cadaveric knees  |h [Elektronische Daten]  |c [Mark Sena, Ryan DellaMaggioria, Jeffrey Lotz, Brian Feeley] 
520 3 |a Purpose: Current techniques to study the biomechanics of the pivot-shift utilize either static or poorly defined loading conditions. Here, a novel mechanical pivot-shift device that continuously applies well-defined loads to cadaveric knees is characterized and validated against the manual pivot-shift. Methods: Six fresh-frozen human lower limb specimens were potted at the femur, mounted on a hinged testing base, and fitted with the mechanical device. Five mechanical and manual pivot-shift tests were performed on each knee by two examiners before and after transecting the ACL. Three-dimensional kinematics (anterior and internal-rotary displacements, and posterior and external-rotary velocities) and kinetics (forces and moments applied to the tibia by the device) were recorded using an optical navigation system and 6-axis load cell. Analysis of variance and Bland-Altman statistics were used to gauge repeatability within knees, reproducibility between knees, agreement between the mechanical and manual test methods, and agreement between examiners. Results: The forces and moments applied by the device were continuous and repeatable/reproducible to within 4/10% of maximum recorded values. Kinematic variables (excluding external-rotary velocity) were qualitatively and quantitatively similar to manual pivot-shift kinematics, and were more repeatable and reproducible. Conclusion: The presented device induces pivot-shift-like kinematics by applying highly repeatable three-dimensional loads to cadaver knees. It is based on a simple mechanical principle and designed using easily obtainable components. Consequently, the device enables orthopaedic biomechanists to easily and reliably quantify the effect of ACL injury and reconstruction on pivot-shift kinematics. 
540 |a European Society of Sports Traumatology, Knee Surgery, Arthroscopy (ESSKA), 2015 
690 7 |a ACL  |2 nationallicence 
690 7 |a Pivot-shift  |2 nationallicence 
690 7 |a Rotational instability  |2 nationallicence 
690 7 |a Force  |2 nationallicence 
690 7 |a Moment  |2 nationallicence 
690 7 |a Device  |2 nationallicence 
700 1 |a Sena  |D Mark  |u Sports Medicine and Shoulder Surgery, Department of Orthopaedic Surgery, University of California, San Francisco 1500 Owens Ave, 94158, San Francisco, CA, USA  |4 aut 
700 1 |a DellaMaggioria  |D Ryan  |u Sports Medicine and Shoulder Surgery, Department of Orthopaedic Surgery, University of California, San Francisco 1500 Owens Ave, 94158, San Francisco, CA, USA  |4 aut 
700 1 |a Lotz  |D Jeffrey  |u Sports Medicine and Shoulder Surgery, Department of Orthopaedic Surgery, University of California, San Francisco 1500 Owens Ave, 94158, San Francisco, CA, USA  |4 aut 
700 1 |a Feeley  |D Brian  |u Sports Medicine and Shoulder Surgery, Department of Orthopaedic Surgery, University of California, San Francisco 1500 Owens Ave, 94158, San Francisco, CA, USA  |4 aut 
773 0 |t Knee Surgery, Sports Traumatology, Arthroscopy  |d Springer Berlin Heidelberg  |g 23/10(2015-10-01), 2900-2908  |x 0942-2056  |q 23:10<2900  |1 2015  |2 23  |o 167 
856 4 0 |u https://doi.org/10.1007/s00167-015-3775-5  |q text/html  |z Onlinezugriff via DOI 
898 |a BK010053  |b XK010053  |c XK010000 
900 7 |a Metadata rights reserved  |b Springer special CC-BY-NC licence  |2 nationallicence 
908 |D 1  |a research-article  |2 jats 
949 |B NATIONALLICENCE  |F NATIONALLICENCE  |b NL-springer 
950 |B NATIONALLICENCE  |P 856  |E 40  |u https://doi.org/10.1007/s00167-015-3775-5  |q text/html  |z Onlinezugriff via DOI 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Sena  |D Mark  |u Sports Medicine and Shoulder Surgery, Department of Orthopaedic Surgery, University of California, San Francisco 1500 Owens Ave, 94158, San Francisco, CA, USA  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a DellaMaggioria  |D Ryan  |u Sports Medicine and Shoulder Surgery, Department of Orthopaedic Surgery, University of California, San Francisco 1500 Owens Ave, 94158, San Francisco, CA, USA  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Lotz  |D Jeffrey  |u Sports Medicine and Shoulder Surgery, Department of Orthopaedic Surgery, University of California, San Francisco 1500 Owens Ave, 94158, San Francisco, CA, USA  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Feeley  |D Brian  |u Sports Medicine and Shoulder Surgery, Department of Orthopaedic Surgery, University of California, San Francisco 1500 Owens Ave, 94158, San Francisco, CA, USA  |4 aut 
950 |B NATIONALLICENCE  |P 773  |E 0-  |t Knee Surgery, Sports Traumatology, Arthroscopy  |d Springer Berlin Heidelberg  |g 23/10(2015-10-01), 2900-2908  |x 0942-2056  |q 23:10<2900  |1 2015  |2 23  |o 167