Objective: To compare initial femoral fixation properties of a new implant, Graftgrab (GG), with 2 established methods of extra-articular femoral graft fixation, spiked washers (SW) and bone staples (ST).
Study Design: Experimental in vitro cohort study.
Methods: Canine semitendinosus-gracilis tendon grafts were passed through bone tunnels and fixed to the lateral surface of femoral condyles with spiked washers, bone staples, or new implant prototypes. The fixations were tested to failure with a single-cycle load at a rate of 50 mm/min. Failure and yield strength, stiffness, energy, and elongation were determined from load-displacement curves and failure modes were recorded.
Results: The graft failed midsubstance in 4 SW, 4 ST, and 1 GG fixations. In 3 SW, 3 ST, and 1 GG specimens, the graft slipped from the fixation. The graft ruptured at the clip (3) and the intra-articular (2) surface of the bone tunnel in the remaining GG specimens. There were no significant differences between fixation groups in femoral tunnel length, femoral width, or the mechanical properties evaluated.
Conclusions: The initial in vitro mechanical properties of the new fixation implant are comparable with those of spiked washers and bone staples.
Clinical Relevance: The initial mechanical performance of the new implant tested in this study was similar to those of comparable, established implants. The new implant is novel and may be useful for human anterior and veterinary cranial cruciate ligament graft reconstruction fixation.
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http://dx.doi.org/10.1111/j.1532-950X.2007.00310.x | DOI Listing |
J Orthop Case Rep
January 2025
Department of Orthopaedics, SN Medical College, Agra, Uttar Pradesh, India.
Introduction: Posterior cruciate ligament (PCL) avulsion fractures of the tibia with ipsilateral tibial shaft represent a rare but challenging orthopedic injury, necessitating careful consideration of surgical interventions for optimal outcomes. This case report presents the successful management of tibial shaft fracture (proximal 1/3rd junction) along with ipsilateral PCL avulsion fracture of tibia using a novel approach using open reduction internal fixation (ORIF) of tibial shaft with Locking compression plate (LCP) with cannulated cancellous screw and spiked washer fixation of PCL avulsion. There are no case reports or research articles available for the management of PCL avulsion fracture of tibia associated with ipsilateral tibial shaft fracture.
View Article and Find Full Text PDFPosterolateral corner and arcuate fractures can cause significant disruption to the stability and kinematics of the knee. This study aimed to determine the biomechanical performance of a novel spiked washer (SW) and intramedullary screw technique compared with a tension slide technique (TST) for the repair of arcuate fractures. Sixteen matched fresh-frozen cadaver knees underwent repair.
View Article and Find Full Text PDFJ Immunol Methods
August 2024
Duke Human Vaccine Institute, Duke University Medical Center, Durham, NC 27710, USA; Department of Medicine, Duke University Medical Center, Durham, NC 27710, USA. Electronic address:
Bead array assays, such as those sold by Luminex, BD Biosciences, Sartorius, Abcam and other companies, are a well-established platform for multiplexed quantification of cytokines and other biomarkers in both clinical and discovery research environments. In 2011, the National Institute of Allergy and Infectious Diseases (NIAID)-funded External Quality Assurance Program Oversight Laboratory (EQAPOL) established a proficiency assessment program to monitor participating laboratories performing multiplex cytokine measurements using Luminex bead array technology. During every assessment cycle, each site was sent an assay kit, a protocol, and blinded samples of human sera spiked with recombinant cytokines.
View Article and Find Full Text PDFArthrosc Tech
May 2023
Department of Orthopedics, Missouri Orthopedic Institute, University of Missouri, Columbia, Missouri, U.S.A.
The primary function of the posterior cruciate ligament (PCL) is to restrict the posterior translation of the tibia, and its secondary function is to limit the tibial external rotation, mainly at 90° and 120° of knee flexion. The prevalence of PCL rupture ranges between 3% and 37% of patients with knee ligament tears. This ligament injury often is associated with other ligament injuries.
View Article and Find Full Text PDFVet Rec
December 2022
School of Veterinary and Life Sciences, Murdoch University, Murdoch, Western Australia, Australia.
Background: Electrical impedance tomography (EIT) produces lung ventilation images via a thoracic electrode belt. Robust electrode design and material, providing low electrode skin contact impedance (SCI), is needed in veterinary medicine. The aim of this study was to compare three EIT electrode designs and materials.
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!