Can C1 lateral mass and C3 pedicle screw fixation be used as an option for atlantoaxial reduction and stabilization in Klippel-Feil patients? A study of its morphological feasibility, technical nuances, and clinical efficiency

2022 ◽  
Author(s):  
Yue-Qi Du ◽  
Yi-Heng Yin ◽  
Teng Li ◽  
Guang-Yu Qiao ◽  
Xin-Guang Yu
Keyword(s):  
Pedicle Screw ◽  
Screw Fixation ◽  
Pedicle Screw Fixation ◽  
Lateral Mass ◽  
Clinical Efficiency

scholarly journals Unilateral C1 Lateral Mass and C2 Pedicle Screw Fixation for Atlantoaxial Instability in Rheumatoid Arthritis Patients: Comparison with the Bilateral Method

2015 ◽  
Vol 57 (6) ◽  
pp. 460 ◽  
Author(s):  
Seung-Chull Paik ◽  
Hyoung-Joon Chun ◽  
Koang Hum Bak ◽  
Jeil Ryu ◽  
Kyu-Sun Choi
Keyword(s):  
Rheumatoid Arthritis ◽  
Pedicle Screw ◽  
Screw Fixation ◽  
Pedicle Screw Fixation ◽  
Atlantoaxial Instability ◽  
Lateral Mass ◽  
C2 Pedicle Screw

Radiographic Evaluation of the Technique for C1 Lateral Mass and C2 Pedicle Screw Fixation in Three Hundred Nineteen Cases

Spine ◽  
2011 ◽  
Vol 36 (1) ◽  
pp. 3-8 ◽  
Author(s):  
Shenglin Wang ◽  
Chao Wang ◽  
Kirkham B. Wood ◽  
Ming Yan ◽  
Haitao Zhou
Keyword(s):  
Pedicle Screw ◽  
Screw Fixation ◽  
Pedicle Screw Fixation ◽  
Radiographic Evaluation ◽  
Lateral Mass ◽  
C2 Pedicle Screw

scholarly journals An unusual injury mechanism of atlantoaxial dislocation: illustrative case

2021 ◽  
Vol 1 (24) ◽  
Author(s):  
Yakubu Ibrahim ◽  
Yiwei Zhao ◽  
Wubo Liu ◽  
Suomao Yuan ◽  
Yonghao Tian ◽  
...  
Keyword(s):  
Clinical Outcome ◽  
Pedicle Screw ◽  
Screw Fixation ◽  
Pedicle Screw Fixation ◽  
Atlantoaxial Dislocation ◽  
Injury Mechanism ◽  
Illustrative Case ◽  
Lateral Mass ◽  
Online Classes ◽  
C2 Pedicle Screw

BACKGROUND Atlantoaxial dislocation (AAD) is a rare and potentially life-threatening condition. Various underlying mechanisms of injury are described in the literature. Here, the authors report an unusual nontraumatic injury mechanism of AAD in a 12-year-old patient. OBSERVATIONS A 12-year-old boy presented with intolerable neck pain and numbness in both upper limbs. The patient’s symptoms had started 2 months after the initiation of online classes during the coronavirus disease 2019 pandemic without a history of trauma. He used a computer for personal study and online classes for prolonged hours with no respite. On physical and radiological evaluation, he was diagnosed with AAD. Before surgery, skull traction was applied to reduce the dislocation and posterior C1 lateral mass screw and C2 pedicle screw fixation was performed. An optimal clinical outcome was achieved with no postoperative complications. A preoperative visual analog scale score of 8.0 was reduced to 0 postoperatively. LESSONS A prolonged fixed neck posture is an unusual underlying cause of AAD. Posterior C1 lateral mass and C2 pedicle screw fixation results in an optimal clinical outcome.

Evaluation of the Efficacy of Titanium Mesh Cages with Posterior C1 Lateral Mass and C2 Pedicle Screw Fixation in Patients with Atlantoaxial Instability

2016 ◽  
Vol 90 ◽  
pp. 103-108 ◽  
Author(s):  
Je Il Ryu ◽  
Koang Hum Bak ◽  
Hyoung-Joong Yi ◽  
Jae Min Kim ◽  
Hyoung-Joon Chun
Keyword(s):  
Pedicle Screw ◽  
Screw Fixation ◽  
Pedicle Screw Fixation ◽  
Atlantoaxial Instability ◽  
Lateral Mass ◽  
Titanium Mesh ◽  
C2 Pedicle Screw

scholarly journals Medial Pedicle Pivot Point Using Preoperative Computed Tomography Morphometric Measurements for Cervical Pedicle Screw Insertion: A Novel Technique and Case Series

2022 ◽  
Vol 11 (2) ◽  
pp. 396
Author(s):  
Ji-Won Kwon ◽  
Edward O. Arreza ◽  
Anthony A. Suguitan ◽  
Soo-Bin Lee ◽  
Sahyun Sung ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Pedicle Screw ◽  
Screw Fixation ◽  
Pedicle Screw Fixation ◽  
Lateral Mass ◽  
Morphometric Measurements ◽  
Pivot Point ◽  
Cervical Pedicle Screw ◽  
Screw Insertion ◽  
Cervical Pedicle

This study describes a new and safe freehand cervical pedicle screw insertion technique using preoperative computed tomography (CT) morphometric measurements as a guide and a medial pedicle pivot point (MPPP) during the procedure. This study included 271 pedicles at 216 cervical spine levels (mean: 4.75 pedicles per patient). A pedicle diameter (PD) ≥ 3.5 mm was the cut-off for pedicle screw fixation. The presence and grade of perforation were detected using postoperative CT scans, where perforations were graded as follows: 0, no perforation; 1, perforation < 0.875 mm; 2, perforation 0.875–1.75 mm; and 3, perforation > 1.75 mm. The surgical technique involved the use of an MPPP, which was the point at which the lines representing the depth of the lateral mass and total length of the pedicle intersected, deep in the lateral mass. The overall success rate was 96.3% (261/271, Grade 0 or 1 perforations). In total, 54 perforations occurred, among which 44 (81.5%) were Grade 1 and 10 (18.5%) were Grade 2. The most common perforation direction was medial (39/54, 72.2%). The freehand technique for cervical pedicle screw fixation using the MPPP may allow for a safe and accurate procedure in patients with a PD ≥3.5 mm.

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