Results 21 to 30 of about 161,833 (142)

Novel MRI Signs in Atlantodental Space Predict Reduction Degree of Atlantoaxial Dislocation. [PDF]

Orthop Surg
We summarized cases of AAD, classified based on the atlantodental space using magnetic resonance imaging (MRI). and preliminarily explored its impact on the degree of reduction. We found patients with high signal intensity were more likely to achieve satisfactory reduction after direct posterior surgery.
Sheng XQ, Deng YF, Huang CY, Pan NF, Zhao YJ, Gong QY, Gong Q, Song YM, Liu H, Meng Y.   +9 more
europepmc   +2 more sources

C1–C2 pedicle screw fixation for adolescent with os odontoideum associated atlantoaxial dislocation and a compound reduction technique for irreducible atlantoaxial dislocation [PDF]

Chinese Medical Journal, 2019
Jia Liu, Ling-Jun Zhu, En-Ze Jiang, Xiao-Gang Bao, Bo Hu, Dong-Yang Niu, Guo-Hua Xu, Yuan-Yuan Ji   +7 more
doaj   +2 more sources

Sagittal Atlantoaxial Joint Inclination and Reduction Index Values for Diagnosis and Treatment of Irreducible Atlantoaxial Dislocation [PDF]

Indian Journal of Orthopaedics, 2018
Yongming Xi
exaly   +2 more sources

Surgical treatment of a complex craniocervical malformation combined with posterior cranial fossa teratoma: a case report and literature review

Chinese Neurosurgical Journal, 2021
Background Basilar invagination (BI) with atlantoaxial dislocation (AAD) is not uncommon in patients with scoliosis, Klippel-Feil syndrome (KFS), and other bone deformities.
Jiang Liu, Rui He, Chao Wang
doaj   +1 more source

Atlantoaxial Dislocation with Bony Fusion of C1/2 Facet Joints Treated with Posterior Joint Release, Distraction and Reduction

Spine Surgery and Related Research, 2022
Introduction: Atlantoaxial dislocation (AAD) is a complicated and challenging deformity with severe morbidities. Irreducible AAD with C1/2 bony fusion requires anterior (transoral or transnasal) odontoidectomy to decompress spinal cord or medulla, which ...
Zhenlei Liu, Qiang Jian, Wanru Duan, Jian Guan, Can Zhang, Boyan Zhang, Fengzeng Jian, Zan Chen   +7 more
doaj   +1 more source

A novel 3D-printed locking cage for anterior atlantoaxial fixation and fusion: case report and in vitro biomechanical evaluation

BMC Musculoskeletal Disorders, 2021
Background Treatment of atlantoaxial dislocation is aimed at reduction and stabilization of the atlantoaxial joint. 3D printing refers to a process where additive manufacturing is achieved under precise computer control.
Shenglin Wang, Huijie Leng, Yinglun Tian, Nanfang Xu, Zhongjun Liu   +4 more
doaj   +1 more source

The Classification of Axial Deformity in Patients with Basilar Invagination

Orthopaedic Surgery, Volume 14, Issue 12, Page 3150-3158, December 2022., 2022
Axis deformities were divided into four types. Type I: the axis is basically normal. Type II: axis lateral mass is dysplasia. Type III: axis pedicle is dysplasia. Type IV: axis pedicle and lateral mass are all dysplasia. The axis variation rate of patients with basilar invagination was as high as 42.4%, of which type IV was the most common.
Qiting He, Jiankang Cao, Huichao Tian, Bin Chen, Xincheng Fan, Shaoyi Wang, Yunpeng Zhao, Jianlu Wei, Lin Nie, Xin Pan, Lei Cheng   +10 more
wiley   +1 more source

The clinical validity of atlantoaxial joint inclination angle and reduction index for atlantoaxial dislocation

Frontiers in Surgery, 2023
ObjectiveAtlantoaxial dislocation patients with neurological defects require surgery. Sometimes, release surgery is necessary for irreducible atlantoaxial dislocation to further achieve reduction.
Yang Qu, Yukun Du, Yonghua Zhao, Jianyi Li, Hao Luo, Jiaxiang Zhou, Yongming Xi   +6 more
doaj   +1 more source

Posterior Surgery in the Treatment of Craniovertebral Junction Deformity with Torticollis

Orthopaedic Surgery, Volume 14, Issue 10, Page 2418-2426, October 2022., 2022
The female, 11 years old, was found to be torticollis for 5 months. (A) The patient showed left torticollis. (B–D) Preoperative CT suggested rotational fixation of atlantoaxial vertebrae, and ADI was 4.3 mm. (E) Axial MRI indicates relaxation of transverse ligament. (F) Postoperative torticollis correction.
Jinpeng Du, Xiangcheng Gao, Yunfei Huang, Xiaobin Yang, Bolong Zheng, Zhongkai Liu, Hua Hui, Lin Gao, Jiayuan Wu, Zhigang Zhao, Baorong He, Liang Yan, Dingjun Hao   +12 more
wiley   +1 more source

Concomitant atlantoaxial and atlanto-occipital rotatory dislocation in children: Radiological features, diagnostic pitfalls, and long-term outcome [PDF]

, 2021
While the pathological manifestation of atlantoaxial rotatory dislocation has been well described in the medical literature, the combined dislocation of the atlantoaxial and atlanto-occipital joints, or OAARD – short for occipital-atlantoaxial rotatory ...
Kenneth MC Cheung, Paul A Koljonen, Cheung, KMC, Koljonen, PA   +3 more
core   +1 more source