DIRECT PEDICLE SCREW INSERTION PULLOUT STRENGTH [PDF]
Acta Ortopédica Brasileira, 2021 Objective: Study the in vitro pullout strength of SpineGuard/Zavation Dynamic Surgical Guidance Z-Direct Screw (DSG Screw), a screw pedicle designed to be inserted using a direct insertion technique.
RÔMULO PEDROZA PINHEIRO +5 more
doaj +7 more sources
Pullout Strength of Pedicle Screws Inserted Using Three Different Techniques: A Biomechanical Study on Polyurethane Foam Block [PDF]
Bioengineering, 2023 Pullout strength is an important indicator of the performance and longevity of pedicle screws and can be heavily influenced by the screw design, the insertion technique and the quality of surrounding bone. The purpose of this study was to investigate the
Lien-Chen Wu +5 more
doaj +4 more sources
Effect of anchor threads on the pullout strength: A biomechanical study [PDF]
Journal of Orthopaedics, 2018 Pullout tests to determine the effect of anchor threads on the pullout strength was conducted by using universal testing machine, synthetic cancellous bone and thread-less metallic anchor. Anchors were inserted at 45°, 90° or 135° from the surface and they were pulled at 45° from the surface.
Eiji Itoi, Nobuyuki Yamamoto
exaly +5 more sources
Pullout Strength Predictor: A Machine Learning Approach [PDF]
Asian Spine Journal, 2019 Study Design A biomechanical study. Purpose To develop a predictive model for pullout strength. Overview of Literature Spine fusion surgeries are performed to correct joint deformities by restricting motion between two or more unstable vertebrae.
Ravi Khatri +4 more
doaj +5 more sources
Salvaging the Pullout Strength of Stripped Screws in Osteoporotic Bone [PDF]
Geriatric Orthopaedic Surgery & Rehabilitation, 2013 Our goal was to determine whether the pullout strength of stripped screw holes in osteoporotic bone could be increased with readily available materials from the operating room.
Pierre H. M. Pechon MBChB, MSc(OrthEng), MRCS(Ed) +3 more
doaj +5 more sources
Mapping of the Inferior Glenohumeral Ligament for Suture Pullout Strength: A Biomechanical Analysis [PDF]
Orthopaedic Journal of Sports Medicine, 2021 Background: Suture pullout during rehabilitation may result in loss of tension in the inferior glenohumeral ligament (IGHL) and contribute to recurrent instability after capsular plication, performed with or without labral repair.
Sumit Raniga MSc, MBChB +5 more
doaj +2 more sources
Can barb thread design improve the pullout strength of bone screws?: a biomechanical study and finite element explanation [PDF]
Bone & Joint Research, 2021 Aims: To draw a comparison of the pullout strengths of buttress thread, barb thread, and reverse buttress thread bone screws. Methods: Buttress thread, barb thread, and reverse buttress thread bone screws were inserted into synthetic cancellous bone ...
Xiaoreng Feng +5 more
doaj +2 more sources
Insertional torque and pullout strength of reinserted screws for sacroiliac joint fusion: Effects of implant dimensions, bone density, and tapping [PDF]
North American Spine Society JournalBackground: Sacroiliac joint (SIJ) fusion is a common procedure for SIJ pain and dysfunction. Traditional threaded screws offer limited bony integration, prompting the development of additively manufactured, porous implants aimed at enhancing ...
Cale J. Hendricks, BS +6 more
doaj +2 more sources
Pullout strength of different pedicle screws after primary and revision insertion: an in vitro study on polyurethane foam [PDF]
BMC Musculoskeletal Disorders, 2023 Background Surgeons are routinely required to remove loose or failed pedicle screws and insert a new screw in their place. However, inserting a new screw into an existing hole may compromise the holding capacity of the pedicle screw.
Lien-Chen Wu +5 more
doaj +2 more sources
The Role of Pedicle Screw Surface on Insertion Torque and Pullout Strength [PDF]
Revista Brasileira de Ortopedia, 2020 Objective Compare by mechanical tests the pullout resistance and the insertion torque of rough and smooth pedicle screws. Methods Pedicle screws with rough surface and smooth surface, with diameters of 4.8; 5.5 and 6.5 mm, were inserted in polyurethane ...
Rodrigo Barra Caiado Fleury +5 more
doaj +5 more sources