Results 111 to 120 of about 128,782 (181)

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

Vertebral Bone Quality Score as a Predictor of Pedicle Screw Loosening Following Surgery for Degenerative Lumbar Disease. [PDF]

Spine (Phila Pa 1976), 2023
Li W, Zhu H, Hua Z, Miao D, Wang F, Tong T, Wang L.   +6 more
europepmc   +1 more source

Analyzing Pedicle Screw Strength with Finite Element Method in Relation to Vertebral Bone Properties

Vertebral fractures are increasingly prevalent in our aging population. Conservative treatments and minimally invasive surgeries are standard, but posterior fixation systems like pedicle-screw-rod constructs face failure risks such as screw loosening ...
Schwab, Jefrem, Schilling, Arndt F., Dathe, Henning, Georg-August-Universität Göttingen   +3 more
core   +1 more source

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

Development of a quantitative method to evaluate pedicle screw loosening after spinal instrumentation using digital tomosynthesis. [PDF]

BMC Musculoskelet Disord, 2022
Mataki K, Hara Y, Okano E, Nagashima K, Noguchi H, Shibao Y, Miura K, Takahashi H, Funayama T, Koda M, Yamazaki M.   +10 more
europepmc   +1 more source

Improved fixation stability for repairing pedicle screw loosening using a modified cement filling technique in porcine vertebrae. [PDF]

Sci Rep, 2022
Hsieh MK, Li YD, Li YC, Liu MY, Tsai TT, Lai PL, Tai CL.   +6 more
europepmc   +1 more source

Pedicle screw loosening

, 2022
openaire   +1 more source

Preoperative and follow-up variations of psoas major muscle are related to S1 screw loosening in patients with degenerative lumbar spinal stenosis

BMC Musculoskeletal Disorders
Background It was reported the paraspinal muscle played an important role in spinal stability. The preoperative paraspinal muscle was related to S1 screw loosening. But the relationship between preoperative and postoperative change of psoas major muscle (
Siyu Zhou, Fei Xu, Zhuoran Sun, Shuai Jiang, Zhuofu Li, Gengyu Han, Weishi Li   +6 more
doaj   +1 more source

The predictive value of endplate morphology and pedicle screw bone quality score on screw loosening after single-level lumbar spinal fusion surgery

Journal of Orthopaedic Surgery and Research
Objective This study aims to explore the predictive value of endplate morphology and pedicle screw bone quality score on screw loosening after single-level lumbar spinal fusion surgery.
Jinxiang Zhan, Qipeng Wei, Weijun Guo, Zihao Liu, Shiji Chen, Qingyan Huang, Dongling Cai   +6 more
doaj   +1 more source

Influence of the screw augmentation technique and a diameter increase on pedicle screw fixation in the osteoporotic spine : pullout versus fatigue testing

, 2014
Purpose: For posterior spinal stabilization, loosening of pedicle screws at the bone-screw interface is a clinical complication, especially in the osteoporotic population.
Lehmann, Wolfgang, Kolb, Jan Philipp, Morlock, Michael, Kueny, Rebecca A., Püschel, Klaus, Huber, Gerd   +5 more
core   +1 more source