scholarly journals A 3D printed model for radius curvus surgical treatment planning in a dog

2018 ◽  
Vol 38 (6) ◽  
pp. 1178-1183 ◽  
Author(s):  
João P.A. Bordelo ◽  
Maria I.R. Dias ◽  
Luís M.M.L. Cardoso ◽  
João M.F. Requicha ◽  
Carlos A.A. Viegas ◽  
...  
Keyword(s):  
Complete Recovery ◽  
Exercise Intolerance ◽  
Limb Deformity ◽  
Area Of Interest ◽  
Ulna Osteotomy ◽  
3D Printed ◽  
The Right ◽  
Surgical Treatment Planning ◽  
Anatomical Area ◽  
Tomography Data

ABSTRACT: An 8 month-old, 10 kg male Azawakh dog was presented due to worsening forelimb gait and exercise intolerance. The right forelimb presented gross angular limb deformity with carpal valgus and radial procurvatum. Surgical planning based on radiographs allowed calculation of the centers of rotation and angularity (CORAs). The computer tomography data were used to generate 3D reconstructions of the antebrachium to aid the detection of the orthopaedic problems. With proper imaging software, the nature of the deformity and its degree were quantified using a previously unreported method based on the CORAs as a 3D printed model of anatomical area of interest. This 3D printed model was used by the surgeon to simulate the surgery with all orthopaedic steps, which included a partial ulna osteotomy and a double cuneiform osteotomy of the radius performed at the level of CORAs and stabilized with bone plates and screws. After 7 weeks, radiographs revealed bone union. At 8 months after surgery the animal presented a complete recovery of the involved forelimb. CORAs method combined with computed tomography and 3D model was useful to plan and simulate surgical procedures, including the corrective surgery of forelimb deformities in a dog which improved the surgical efficiency comparatively to the conventional pre-operative study.

scholarly journals Anatomic three-dimensional model-assisted surgical planning for treatment of pediatric hip dislocation due to osteomyelitis

2019 ◽  
Vol 48 (2) ◽  
pp. 030006051985428 ◽  
Author(s):  
Yi-Ping Wei ◽  
Yu-Cheng Lai ◽  
Wei-Ning Chang
Keyword(s):  
Three Dimensional ◽  
Hip Dislocation ◽  
Three Dimensional Model ◽  
Limb Deformity ◽  
Joint Deformity ◽  
3D Printed ◽  
Small Bones ◽  
Hip Spica Cast ◽  
Pediatric Orthopedic ◽  
The Right

Management of pediatric septic coxarthritis and osteomyelitis of the femur is challenging, and the sequelae of multiplanar hip joint deformity with instability are difficult to reconstruct. The inadequacy of a suitable device for fixing small bones during pediatric osteotomy is a hindrance to the correction of subluxated hip joints and deformed femurs in children. Two-dimensional axial images and three-dimensional (3D) virtual models representing the patient’s individual anatomy are usually reserved for more complex cases of limb deformity. 3D printing technology can be used for preoperative planning of complex pediatric orthopedic surgery. However, there is a paucity of literature reports regarding the application of 3D-printed bone models for pediatric post-osteomyelitis deformity. We herein present a case of a 4-year-old boy who underwent treatment for post-osteomyelitis deformity. We performed corrective surgery with Pemberton osteotomy of the right hip, multilevel varus derotation osteotomy of the right femur, and immobilization with a hip spica cast. A 3D-printed bone model of this patient was used to simulate the surgery, determine the proper osteotomy sites, and choose the appropriate implant for the osteotomized bone. A satisfactory clinical outcome was achieved.

scholarly journals Optimization of the scanning protocol in musculoskeletal ultrasound

2020 ◽  
Author(s):  
Alessandroni Maddalena ◽  
Collocola Alessio ◽  
Durante Stefano
Keyword(s):  
Medical Professional ◽  
Musculoskeletal Tissue ◽  
Technical Parameters ◽  
Area Of Interest ◽  
Specific Protocol ◽  
Ultrasound Study ◽  
Set Up ◽  
Time Required ◽  
The Right ◽  
Anatomical Area

The main limit of the ultrasound resides on the fact that it is a strictly operator-dependent method, and, against the growing discrepancy in the execution methods, the application of a specific protocol for the anatomical area of interest has the function of implementing the achievement of the diagnostic result. This experimentation aims to optimize the parameters of the ultrasound equipment, remaining placed in a strictly technical context, without trying to emulate in any way the diagnostic ability of the medical professional. The first step was mainly focused on ultrasound training and in particular on acquiring a good mastership of the technical image parameters. Subsequently there were performed some scans on five volunteer patients in various anatomical areas according to two different orientations of the ultrasound transducer. The images were acquired at first by the use of the presets already placed on the ultrasound equipment since the installation. The next step was to create a new ultrasound protocol for musculoskeletal tissue changing the values of the technical parameters of the image by scanning the five patients previously recruited. The final step concerned the comparison with the medical professional who was required to scan the same five patients in the same anatomical sections and according to the same scan plans previously set. This experimentation compares the three protocols above mentioned, pursuing the aim to set up an execution protocol for the ultrasound study of musculoskeletal tissue by defining the right setting for the main technical image parameters in order to optimize the performance of the exam, to reduce the time required to complete the survey and to obtain good quality images.

scholarly journals Application of 3D-Printed Model in the Cervical Spine Osteochondroma Surgery: A Case Report

2021 ◽  
pp. 014556132110405
Author(s):  
Jyun-Yi Liao ◽  
Chien-Yu Huang ◽  
Wei-Chuan Liao ◽  
Bor-Hwang Kang ◽  
Kuo-Ping Chang
Keyword(s):  
Cervical Spine ◽  
Complete Recovery ◽  
Final Diagnosis ◽  
Swallowing Function ◽  
Her Family ◽  
Solitary Osteochondroma ◽  
Reliable Model ◽  
3D Printed ◽  
The Right

A 73-year-old woman having a throat lump sensation and dysphagia for the past several months presented at our otorhinolaryngology outpatient clinic. A physical examination disclosed a protruding subepithelial mass over the right tonsil fossa. The mass was not tender and had no mucosal lesions or signs of active infection. Therefore, we arranged face and neck computed tomography scans, which reported a solitary osseous lesion over the anterior-right aspect of the C1-2 joint. Considering the rarity and unfamiliar anatomy of this disease, we built a 3D-printed model to assist with the surgical rehearsal of the procedure as well as with a preoperation discussion with the patient and her family. We arranged a combined Otolaryngology-Neurosurgery department approach after discussion with the neurosurgeon and successfully removed the lesion without sacrificing the overlying longus capitis muscle. The pathology examination revealed no evidence of malignancy. The final diagnosis was cervical spine solitary osteochondroma. The patient had a complete recovery of both oral cavity and normal swallowing function. No tumor recurred during the 3-year follow-up. On the basis of this case, in-house 3D-printing technology can offer a rapid, reliable model for an interdisciplinary team to use to enhance personalized presurgical planning, thus providing better patient engagement during hospitalization.

Closure of Secundum Atrial Septal Defect with Autologous Right Atrial Patch: Case Report

2005 ◽  
Vol 8 (2) ◽  
pp. 96 ◽  
Author(s):  
Osman Tansel Dar�in ◽  
Alper Sami Kunt ◽  
Mehmet Halit Andac
Keyword(s):  
Atrial Septal Defect ◽  
Right Atrium ◽  
Septal Defect ◽  
Complete Recovery ◽  
Interatrial Septum ◽  
Right Atrial ◽  
Atrial Wall ◽  
Residual Shunt ◽  
Asd Closure ◽  
The Right

Background: Although various synthetic materials and pericardium have been used for atrial septal defect (ASD) closure, investigators are continuing to search for an ideal material for this procedure. We report and evaluate a case in which autologous right atrial wall tissue was used for ASD closure. Case: In this case, we closed a secundum ASD of a 22-year-old woman who also had right atrial enlargement due to the defect. After establishing standard bicaval cannulation and total cardiopulmonary bypass, we opened the right atrium with an oblique incision in a superior position to a standard incision. After examining the secundum ASD, we created a flap on the inferior rim of the atrial wall. A stay suture was stitched between the tip of the flap and the superior rim of the defect, and suturing was continued in a clockwise direction thereafter. Considering the size and shape of the defect, we incised the inferior attachment of the flap, and suturing was completed. Remnants of the flap on the inferior rim were resected, and the right atrium was closed in a similar fashion. Results: During an echocardiographic examination, neither a residual shunt nor perigraft thrombosis was seen on the interatrial septum. The patient was discharged with complete recovery. Conclusion: Autologous right atrial patch is an ideal material for ASD closure, especially in patients having a large right atrium. A complete coaptation was achieved because of the muscular nature of the right atrial tissue and its thickness, which is a closer match to the atrial septum than other materials.

scholarly journals Complete Recovery from Blindness in Case of Compressive Optic Neuropathy due to Unruptured Anterior Cerebral Artery Aneurysm

2017 ◽  
Vol 8 (1) ◽  
pp. 157-162
Author(s):  
Yurie Fukiyama ◽  
Hidehiro Oku ◽  
Yusuke Hashimoto ◽  
Yuko Nishikawa ◽  
Masahiro Tonari ◽  
...  
Keyword(s):  
Visual Field ◽  
Optic Neuropathy ◽  
Cerebral Artery ◽  
Anterior Cerebral Artery ◽  
Artery Aneurysm ◽  
Complete Recovery ◽  
Visual Field Defects ◽  
Anterior Cerebral Artery Aneurysm ◽  
The Right ◽  
Cerebral Artery Aneurysm

It is not common for an isolated visual symptom to be the first indication of an aneurysm compressing the optic nerve. The compression can lead to blindness, and a recovery from the blindness is rare. We report a female with a left painless optic neuropathy caused by an unruptured anterior cerebral artery aneurysm. The patient had a temporal hemianopic visual field defect, which progressed to blindness in the left eye, while the right visual function was not affected. A coil embolization of the aneurysm completely restored her visual acuity to 20/20. These findings suggest that aneurysmal lesions should be ruled out in case of unilateral optic neuropathy with hemianopic visual field defects and progressive visual loss.

scholarly journals Esophago-pulmonary fistula manifesting as recurrent pneumonias and migrating mediastinal calcifications

2017 ◽  
Vol 87 (1) ◽  
Author(s):  
Jadd Kebbe ◽  
Sai Yendamuri ◽  
Charles Roche ◽  
Kassem Harris ◽  
Samjot Singh Dhillon
Keyword(s):  
Surgical Repair ◽  
Lower Lobe ◽  
Complete Recovery ◽  
Ct Imaging ◽  
Ct Scans ◽  
Small Areas ◽  
The Right

<div class="WordSection1"><p>A 43-year old man presented with recurrent pneumonias, episodes of hemoptysis and an enlarging right lower lobe mass. A clear diagnosis was not previously established in spite of multiple radiological evaluations and biopsies. Meticulous review of his CT imaging showed that he had subcarinal calcification on his prior CT scans, which had decreased in size and now multiple new small areas of calcifications were seen in the right lower lobe lesion. An esophago-pulmonary fistula due to migration of mediastinal calcifications was suspected which was identified on careful review of the CT chest and confirmed by esophagogastroduodenoscopy. Patient had surgical repair with complete recovery.</p></div>

scholarly journals Cerebral Hemispheric and Contralateral Cerebellar Hypoperfusion during a Transient Ischemic Attack

1987 ◽  
Vol 7 (4) ◽  
pp. 507-509 ◽  
Author(s):  
Daniela Perani ◽  
Paolo Gerundini ◽  
Gian Luigi Lenzi
Keyword(s):  
Single Photon ◽  
Photon Emission ◽  
Complete Recovery ◽  
Emission Computed Tomography ◽  
Left Middle Cerebral Artery ◽  
Single Photon Emission Computed ◽  
Ischemic Attack ◽  
The Right ◽  
Photon Emission Computed Tomography ◽  
Left Middle

We studied a 79-year-old woman within 3 h of the onset of a motor aphasia and a right hemiparesis. Single photon emission computed tomography (SPECT) showed a 24% decrease in the perfusion of the left middle cerebral artery territory and a 16% reduction in the perfusion of the right cerebellum. A mild naming difficulty was the neurological deficit at the end of the SPECT examination, and complete recovery was achieved within 24 h. Repeated SPECT study 10 days later was normal. This is the first report of focal hemispheric and contralateral cerebellar hypoperfusion in transient cerebral ischemia.

scholarly journals The striated muscles in pulmonary arterial hypertension: adaptations beyond the right ventricle

2015 ◽  
Vol 46 (3) ◽  
pp. 832-842 ◽  
Author(s):  
Emmy Manders ◽  
Silvia Rain ◽  
Harm-Jan Bogaard ◽  
M. Louis Handoko ◽  
Ger J.M. Stienen ◽  
...  
Keyword(s):  
Pulmonary Arterial Hypertension ◽  
Right Ventricle ◽  
Arterial Hypertension ◽  
Right Heart Failure ◽  
Exercise Intolerance ◽  
Muscle Dysfunction ◽  
Striated Muscles ◽  
Pulmonary Arterial ◽  
The Right ◽  
The Impact

Pulmonary arterial hypertension (PAH) is a fatal lung disease characterised by progressive remodelling of the small pulmonary vessels. The daily-life activities of patients with PAH are severely limited by exertional fatigue and dyspnoea. Typically, these symptoms have been explained by right heart failure. However, an increasing number of studies reveal that the impact of the PAH reaches further than the pulmonary circulation. Striated muscles other than the right ventricle are affected in PAH, such as the left ventricle, the diaphragm and peripheral skeletal muscles. Alterations in these striated muscles are associated with exercise intolerance and reduced quality of life. In this Back to Basics article on striated muscle function in PAH, we provide insight into the pathophysiological mechanisms causing muscle dysfunction in PAH and discuss potential new therapeutic strategies to restore muscle dysfunction.

scholarly journals The Right to Strike in the Education Sector in Light of Constitutional Provisions and International Legal Obligations

2021 ◽  
Vol 28 (2) ◽  
pp. 129-138
Author(s):  
Aleksandra Bocheńska
Keyword(s):  
Public Education ◽  
Public Sector ◽  
Civil Service ◽  
Education Sector ◽  
Main Area ◽  
Area Of Interest ◽  
Current State ◽  
Legal Obligations ◽  
The Right

The main area of interest of this paper focuses on the right to strike in public education sector. All the possibilities of limiting the right to strike in this public sector needs to be verified in the context of constitutional provisions and international legal obligations binding the legislator. The possibility of “including” teachers in the Civil Service Corps is being considered in this paper. Under the current state of law, there are no grounds to restrict or prohibit the right to strike in the education sector. The potential subordination of teachers to the rigours binding the Civil Service Corps would require far-reaching adjustments within this institution, stemming from the constitutional provisions that would necessitate these changes.

scholarly journals A 3D-Printed Polymer–Lipid-Hybrid Tablet towards the Development of Bespoke SMEDDS Formulations

Pharmaceutics ◽  
2021 ◽  
Vol 13 (12) ◽  
pp. 2107
Author(s):  
Bryce W. Barber ◽  
Camille Dumont ◽  
Philippe Caisse ◽  
George P. Simon ◽  
Ben J. Boyd
Keyword(s):  
Drug Release ◽  
Volume Ratio ◽  
Water Soluble ◽  
Dissolution Time ◽  
Lipophilic Drugs ◽  
Solid Lipid ◽  
Area Of Interest ◽  
3D Printed ◽  
Poorly Water Soluble ◽  
Lipid Formulations

3D printing is a rapidly growing area of interest within pharmaceutical science thanks to its versatility in creating different dose form geometries and drug doses to enable the personalisation of medicines. Research in this area has been dominated by polymer-based materials; however, for poorly water-soluble lipophilic drugs, lipid formulations present advantages in improving bioavailability. This study progresses the area of 3D-printed solid lipid formulations by providing a 3D-printed dissolvable polymer scaffold to compartmentalise solid lipid formulations within a single dosage form. This allows the versatility of different drugs in different lipid formulations, loaded into different compartments to generate wide versatility in drug release, and specific control over release geometry to tune release rates. Application to a range of drug molecules was demonstrated by incorporating the model lipophilic drugs; halofantrine, lumefantrine and clofazimine into the multicompartmental scaffolded tablets. Fenofibrate was used as the model drug in the single compartment scaffolded tablets for comparison with previous studies. The formulation-laden scaffolds were characterised using X-ray CT and dispersion of the formulation was studied using nephelometry, while release of a range of poorly water-soluble drugs into different gastrointestinal media was studied using HPLC. The studies show that dispersion and drug release are predictably dependent on the exposed surface area-to-volume ratio (SA:V) and independent of the drug. At the extremes of SA:V studied here, within 20 min of dissolution time, formulations with an SA:V of 0.8 had dispersed to between 90 and 110%, and completely released the drug, where as an SA:V of 0 yielded 0% dispersion and drug release. Therefore, this study presents opportunities to develop new dose forms with advantages in a polypharmacy context.

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