Results 31 to 40 of about 119,023 (237)

Biomechanical study of C1 posterior arch crossing screw and C2 lamina screw fixations for atlantoaxial joint instability

Journal of Orthopaedic Surgery and Research, 2020
Background The biomechanics of C1 posterior arch screw and C2 vertebral lamina screw techniques has not been well studied, and the biomechanical performance of the constructs cannot be explained only by cadaver testing.
Chuang Liu, Allieu Kamara, Yunhui Yan
doaj   +1 more source

Biomechanical arrangement of threaded and unthreaded portions providing holding power of transpedicular screw fixation

, 2017
Background: Failure of pedicle screw is a major concern in spinal surgery. The threaded and unthreaded portions of the pedicle screw provide the ability to anchor and squeeze the surrounding bone, respectively.
Tsuang, Fon-Yih;Chen, Chia-Hsien;Wu, Lien-Chen;Kuo, Yi-Jie;Lin, Shang-Chih;Chiang, Chang-Jung
core   +1 more source

Factors influencing the pedicle screw fixation stability in patients with unstable lumbar and thoracolumbar spine injuries

Инновационная медицина Кубани, 2020
Background. One of the reasons for the lack of standardized approaches to treating lumbar and thoracolumbar spine traumatic injuries is inconclusive information on relative contribution of various factors to pedicle screw fixation stability.Objective. To
A. E. Bokov, S. G. Mlyavykh, I. S. Brattsev, A. V. Dydykin   +3 more
doaj   +1 more source

Contiguous Lumbar Bilateral Pars Defects at L3 and L4 (With Intact L5): Treated With Pedicle Screw Fixation and Interbody Fusion: A Case Report With Literature Review [PDF]

Clin Case Rep
ABSTRACT A 42‐year‐old woman had chronic L4 pars defect with Grade 2 spondylolisthesis and acute L3 pars fractures after trauma, causing back pain, sensory, and motor deficits. She underwent L3–L5 pedicle screw fixation with interbody fusion. Postoperatively, she showed rapid pain relief, neurological improvement, and stable spinal alignment on follow ...
Ali M, Saleem M, Shahid A, Sajid M, Haris M, Asmat S, Afzal N, Al Diab Al Azzawi M.   +7 more
europepmc   +2 more sources

CT evaluation of pedicle screw fixation in upper cervical spine.

, 2017
(A) Atlas pedicle screw was totally in vertebral pedicle, which was considered as type I. (B) Axis vertebral pedicle screw was totally in vertebral pedicle, which was considered as type I.
Jianhao Dai (3713683), Yichuan Ma (3707764), Guanghui Zhu (166419), Fei Guo (181055), Junjie Shen (134885), Junxiang Zhang (662822), Guoqi Niu (3713680)   +6 more
core   +1 more source

Evaluation of Surgical Outcome of All-Pedicle-Screw versus Hybrid Fixation in Patients with Adolescent Idiopathic Scoliosis

مجله دانشکده پزشکی اصفهان, 2018
Background: The aim of current study was to compare the effects of all-pedicle-screw versus hybrid fixation techniques in surgical correction of adolescent idiopathic scoliosis.
Mohammadreza Etemadifar, Pouya Rajabzadeh, Hadi Ravanbod   +2 more
doaj   +1 more source

Medial Quadriceps Tendon‐Femoral Ligament Reconstruction Offers Favorable Clinical Outcomes and Low Complication Rates for Recurrent Patellar Instability: A Systematic Review

Arthroscopy, EarlyView.
Abstract Purpose To evaluate the surgical methods, clinical outcomes, and complication profile of patients undergoing medial quadriceps tendon‐femoral ligament reconstruction (MQTFLR), either isolated or as medial patellofemoral complex reconstruction (MPFCR), for recurrent patellar instability.
Harjind Kahlon, Benjamin Blackman, Prushoth Vivekanantha, Anika Ranadive, Marc Daniel Bouchard, Darren de SA, Jeffrey Kay   +6 more
wiley   +1 more source

Double‐Bundle Medial Patellofemoral Ligament Reconstruction Using Free Rectus Femoris Autograft

Arthroscopy Techniques, EarlyView.
Abstract The rectus femoris tendon autograft represents a relatively new graft option, primarily used in anterior cruciate ligament revision surgery. In this technical note, we describe a technique for medial patellofemoral ligament reconstruction using a double‐bundle rectus femoris autograft.
Samo Novak, Matic Povh
wiley   +1 more source

Accuracy of pedicle screw (PS) insertion.

, 2018
Accuracy of pedicle screw (PS) insertion.
Tadashi Kokubo (521172), Tomiharu Matsushita (521171), Koji Akeda (3710983), Koichiro Murata (5180858), Seiji Yamaguchi (514015), Akihiko Matsumine (3737893), Norihiko Takegami (5180861), Akihiro Sudo (251614)   +7 more
core   +1 more source

A novel UHMWPE anchor for improving the pullout resistance of pedicle screws

Frontiers in Bioengineering and Biotechnology
IntroductionThe ability to maintain bone purchase and resist pullout is considered a basic requirement for pedicle screws. However, poor bone density or oversized pilot holes can increase the risk of screw loosening and pullout.
Che-Kuang Lin, Che-Kuang Lin, Fu-Shan Jaw, Tai-Horng Young   +3 more
doaj   +1 more source