Radiographic Assessment of the Feline Temporomandibular Joint with Oblique Projections: A Preliminary Ex Vivo Study

2021 ◽  
pp. 089875642110665
Author(s):  
Lenin A. Villamizar-Martinez ◽  
Cristian M. Villegas ◽  
Marco A. Gioso ◽  
Carina Outi Baroni ◽  
Silvana M. Unruh ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Temporomandibular Joint ◽  
Ex Vivo ◽  
Conventional Radiography ◽  
Joint Space ◽  
Domestic Cat ◽  
Radiographic Assessment ◽  
Oblique View ◽  
Oblique Projections ◽  
Complex Anatomy

Radiographic assessment of the temporomandibular joint in the domestic cat using conventional radiographic views can be challenging due to superimposition of overlying structures and the complex anatomy of the skull. The use of computed tomography, magnetic resonance imaging, and cone beam computed tomography to assess the temporomandibular joint in the cat has increased, but these modalities are not always available in general veterinary practices. Conventional radiography is still commonly used for first line assessment of the temporomandibular joint. The aim of this preliminary study was to determine optimal angle of obliquity of lateroventral-laterodorsal and laterorostral-laterocaudal (nose up lateral oblique) oblique radiographic views in the assessment of the temporomandibular joints in five feline mesaticephalic dry skulls. Visibility of the mandibular head, mandibular fossa, retroarticular process, and temporomandibular joint space were evaluated and scored by two veterinary radiologists. The results of this study identified that the dependent temporomandibular joint anatomy was best seen on the latero-10°-ventral-laterodorsal, latero-15°-ventral-laterodorsal, and latero-20°-ventral-laterodorsal, oblique views, and opposite lateral oblique views at these angulations may be helpful in characterization of this anatomy in clinical patients. The results also indicate that the laterorostral-laterocaudal (nose up lateral oblique) oblique view did not allow adequate discrimination of all TMJ anatomy at any angle, and is not recommended.

Accuracy of High-resolution Small-volume Cone-beam Computed Tomography in Detecting Complex Anatomy of the Apical Isthmi: Ex Vivo Analysis

2018 ◽  
Vol 44 (12) ◽  
pp. 1862-1866 ◽  
Author(s):  
Elen de Souza Tolentino ◽  
Pablo Andrés Amoroso-Silva ◽  
Murilo Priori Alcalde ◽  
Heitor Marques Honório ◽  
Lilian Cristina Vessoni Iwaki ◽  
...  
Keyword(s):  
Computed Tomography ◽  
High Resolution ◽  
Cone Beam Computed Tomography ◽  
Small Volume ◽  
Ex Vivo ◽  
Cone Beam ◽  
Complex Anatomy

Fractures of the acetabulum: radiographic assessment and classification

2011 ◽  
Author(s):  
John A Boudreau ◽  
Berton R Moed
Keyword(s):  
Computed Tomography ◽  
Systematic Approach ◽  
Diagnosis And Treatment ◽  
Radiographic Assessment ◽  
Plain Radiographs ◽  
Complex Anatomy ◽  
Radiographic Interpretation

♦ This injury is relatively uncommon at 3 per 100,000 patients annually♦ Understanding the complex anatomy of the innominate bone is key♦ Assessment is based on interpretation of three basic plain radiographs supplemented by computed tomography♦ Fractures are classified into five elementary and five associated types♦ A systematic approach to the radiographic interpretation facilitates diagnosis and treatment.

scholarly journals Evaluation of temporomandibular joint disorders using cone beam computed tomography

2017 ◽  
Vol 3 (4) ◽  
pp. 698
Author(s):  
Sonam Kohli ◽  
Rahul Krishan Sharma ◽  
Anchal Goel ◽  
M. K. Sunil
Keyword(s):  
Computed Tomography ◽  
Temporomandibular Joint ◽  
Cone Beam Computed Tomography ◽  
Joint Space ◽  
Temporomandibular Joint Disorders ◽  
Cone Beam ◽  
Glenoid Fossa ◽  
Significant Difference ◽  
Mandibular Fossa ◽  
Osseous Changes

<p class="abstract"><strong>Background:</strong> <span lang="EN-IN">The aim of this study was to evaluate efficacy of segmental cone beam computed tomography (CBCT) in detecting bony changes in condyle and thickness of roof of glenoid fossa in temporomandibular joint (TMJ) disorders.</span></p><p class="abstract"><strong>Methods:</strong> The study group comprised of 10 temporomandibular disorders (TMD) patients of either sex between the age group of 20-60 years diagnosed as TMDs by clinical evaluation using the research diagnostic criteria was considered. After the clinical examination, radiographic investigations were carried out which included digital OPG, transcranial radiograph and CBCT scan. TMJ Evaluation included: (a) bony changes of the condyle (flattening, erosion, sclerosis, osteophytes, resorption); (b) joint space (normal, increased, reduced, bony contact between the condyle and the mandibular fossa); and (c) bony changes of mandibular fossa (normal, sclerosis, erosion, resorption). The radiographic findings were statistically analysed.<strong></strong></p><p class="abstract"><strong>Results:</strong> <span lang="EN-IN">Significant difference between OPG, transcranial and CBCT were found for the presence of erosion (P =0.000), thickness of roof of glenoid fossa (P =0.000), deformed contour (P =0.001), joint space (P =0.011), subchondral sclerosis (P =0.011), irregularity of articular surface and eminence (P =0.000), flattening (P =0.050). </span></p><p class="abstract"><strong>Conclusions:</strong> Using CBCT as imaging technique in our study to detect osseous changes in the TMJ was proved to be effective as compared to the conventional radiographic techniques, the results achieved with CBCT was 100%.The results obtained in our study prove to be a full proof one and it seems to promise to go one step closer to detect progression and severity of the osseous changes in the condylar head and mandibular fossa in patients with TMDs<span lang="EN-IN">.</span></p>

scholarly journals POS0981 COMPUTED TOMOGRAPHY-BASED ASSESSMENT OF RADIOGRAPHIC PROGRESSION IN SPINE AND SACROILIAC JOINTS AFTER PREGNANCY IN WOMEN WITH ANKYLOSING SPONDYLITIS

2021 ◽  
Vol 80 (Suppl 1) ◽  
pp. 758.1-758
Author(s):  
K. A. Lee ◽  
S. Y. Lee ◽  
H. S. Kim ◽  
H. R. Kim ◽  
S. H. Lee
Keyword(s):  
Computed Tomography ◽  
Ankylosing Spondylitis ◽  
Radiographic Progression ◽  
Conventional Radiography ◽  
Joint Space ◽  
Ct Scans ◽  
Gravid Uterus ◽  
Pregnancy And Delivery ◽  
Ct Evaluation ◽  
Whole Spine

Background:Mechanical stress are one of the pathogenesis of ankylosing spondlitis (AS). During pregnancy, the mechanical overload on the spine and pelvis increases due to gravid uterus. Recently, computed tomography syndesmophyte score (CTSS) has been developed to analysis of the spinal damage in patients with AS. Indeed, CT has higher sensitivity and reliability compared to conventional radiography in the detection of sacroiliitis.Objectives:We aimed to investigate whether pregnancy and delivery affect radiographic progression of spine and SIJ in women with AS based on CT evaluation.Methods:This retrospective study included women aged 19-49 years with AS who performed at least twice CT scans of whole-spine or sacroilliac joints (SIJ) at intervals of 2 to 4 years. To compare the radiographic progression after delivery, we classified into 2 groups: delivery group or controls. Delivery group was restricted to subjects who had the first CT scans ~2 years before delivery and the second CT scans ~2 years after delivery. CTSS (0-522) and SIJ scores (0-40) were used to evaluate the spinal syndesmophyte and erosion, joint space narrowing, and sclerosis of SIJ.Results:A total of 21 women in delivery group and 38 women in controls were included. The median (Q1-Q3) CTSS at baseline in delivery group and controls were 19 (16-23) and 20 (13.25-27.75), and median progression was 1 (0-3) and 0 (0-1) during the median 2.9 year follow-up. The median (Q1-Q3) SIJ scores at baseline in delivery group and controls were 13 (8-22) and 11 (6-22), and median progression was 1.5 (0-3) and 1 (0-2). The CTSS and SIJ scores significantly increased in both groups, but no difference in absolute score changes per time point between was observed. The changes in SIJ scores was comparable according to the delivery methods.Conclusion:This study suggests that pregnancy and delivery had no effect on radiographic progression of spine and SIJ in female with AS.References:[1]de Bruin F, de Koning A, van den Berg R, Baraliakos X, Braun J, Ramiro S. Development of the CT Syndesmophyte Score (CTSS) in patients with ankylosing spondylitis: data from the SIAS cohort. 2018;77(3):371-7.Disclosure of Interests:None declared.

scholarly journals Spatial analysis of mandibular condyles in patients with temporomandibular disorders and normal controls using cone beam computed tomography

2017 ◽  
Vol 11 (01) ◽  
pp. 099-105 ◽  
Author(s):  
Natheer Hashim Al-Rawi ◽  
Asmaa Tahseen Uthman ◽  
Sahar M. Sodeify
Keyword(s):  
Computed Tomography ◽  
Temporomandibular Joint ◽  
Cone Beam Computed Tomography ◽  
Joint Space ◽  
Cone Beam ◽  
Control Group ◽  
Articular Eminence ◽  
Linear Measurements ◽  
Condylar Position ◽  
Normal Controls

ABSTRACT Objectives: The aim of the study is to investigate the condylar position and its relation to articular eminence and axial condylar angle in temporomandibular joint disorder (TMD) patients and in normal controls using cone beam computed tomography (CBCT). Materials and Methods: CBCT temporomandibular joint (TMJ) images of 70 participants (38 males and 32 females, mean age 26.4 years) were analyzed. They were divided into control group (including 35 subjects) and study group (including 35 subjects). Linear measurements of joint space and condyle determined the condylar position of each TMJ. Articular eminence height and inclination were also measured with axial condylar angle to determine its relation to condylar position. Independent and paired sample t-test was applied to compare between the groups and TMJ sides of the same group at significance level of 0.05. Results: Statistical significant differences were found between males and females of both groups regarding superior joint space (SJS), lateral joint space, A-P, and M-L condyle distance (P < 0.05). SJS, medial joint space (MJS), and eminence angle were greater (P < 0.01) in male's joints with TMD with flatter axial condylar angle (P < 0.05), when compared with normal TMJ counterpart. Females TMJs showed significantly higher values of MJS of affected side when compared with normal counterpart with flatter axial condylar angle (P < 0.05). Conclusion: Superior and MJS parameters were the ones that showed significant differences between affected and nonaffected joints. The mean axial condylar angle was smaller in joints with abnormal TMJ. This indicates that the condyles of the affected joints may rotate inward.

scholarly journals Degenerative Changes in the Temporomandibular Joint in Elderly Patients with Posterior Edentulous Maxilla and Mandibula According to Cone-Beam Computed Tomography Data.

2021 ◽  
Vol 15 (1) ◽  
pp. 191-195
Author(s):  
Zurab Khabadze ◽  
Oleg Mordanov ◽  
Georgiy Davreshyan ◽  
Mariya Balashova ◽  
Alexander Prokopenko ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Elderly Patients ◽  
Temporomandibular Joint ◽  
Cone Beam Computed Tomography ◽  
Bone Structure ◽  
Joint Space ◽  
Degenerative Changes ◽  
Cone Beam ◽  
Female Group ◽  
The Right

Aim: This study aimed at assessing the degenerative changes in the Temporomandibular Joint (TMJ)in elderly patients with posterior edentulous maxilla and mandibula according to Cone-Beam Computed Tomography (CBCT) data. Materials and Methods: The study included 32 patients (64 temporomandibular joints) aged from 50 to 81 years (mean age 62 ± 7.9 years; 16 males and 16 females). TMJs were visualized on reconstructed parasagittal, paracoronal, and axial sections of the joint. The following changes in bone tissue were evaluated: condyle flattening, erosion, sclerosis, subchondral cysts, osteophytes. Joint space was evaluated as well. Results and Discussion: 100% of patients had at least one sign of degenerative changes in TMJ at least on one side. In 19 patients, degenerative symptoms were found only on one side. The most common sign was subchondral cysts. It was noted that the number of degenerative symptoms in male patients was statistically more than in the female group. On the right side, the anterior, superior, and posterior joint spaces had the following values: 2.35 mm, 2.95 mm, and 4.84 mm, respectively. On the left side, the anterior, superior, and posterior joint spaces had the following values: 2.14 mm, 2.3 mm, and 4.1 mm, respectively. Conclusion: Both edentulousness and aging affect the bone structure of TMJ in both genders.

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