scholarly journals PR605: Three-dimensional radiographic analyses of post-surgery buccal bone changes

2018 ◽  
Vol 45 ◽  
pp. 327-327
Keyword(s):  
Three Dimensional ◽  
Post Surgery ◽  
Bone Changes

scholarly journals Development of a Novel Pre-Vascularized Three-Dimensional Skin Substitute Using Blood Plasma Gel

2018 ◽  
Vol 27 (10) ◽  
pp. 1535-1547 ◽  
Author(s):  
Niann-Tzyy Dai ◽  
Wen-Shyan Huang ◽  
Fang-Wei Chang ◽  
Lin-Gwei Wei ◽  
Tai-Chun Huang ◽  
...  
Keyword(s):  
Wound Healing ◽  
Human Plasma ◽  
Three Dimensional ◽  
Skin Substitute ◽  
Strength Analysis ◽  
Full Thickness ◽  
Skin Substitutes ◽  
Full Thickness Skin ◽  
Post Surgery ◽  
Thickness Skin

Skin substitutes with existing vascularization are in great demand for the repair of full-thickness skin defects. In the present study, we hypothesized that a pre-vascularized skin substitute can potentially promote wound healing. Novel three-dimensional (3D) skin substitutes were prepared by seeding a mixture of human endothelial progenitor cells (EPCs) and fibroblasts into a human plasma/calcium chloride formed gel scaffold, and seeding keratinocytes onto the surface of the plasma gel. The capacity of the EPCs to differentiate into a vascular-like tubular structure was evaluated using immunohistochemistry analysis and WST-8 assay. Experimental studies in mouse full-thickness skin wound models showed that the pre-vascularized gel scaffold significantly accelerated wound healing 7 days after surgery, and resembled normal skin structures after 14 days post-surgery. Histological analysis revealed that pre-vascularized gel scaffolds were well integrated in the host skin, resulting in the vascularization of both the epidermis and dermis in the wound area. Moreover, mechanical strength analysis demonstrated that the healed wound following the implantation of the pre-vascularized gel scaffolds exhibited good tensile strength. Taken together, this novel pre-vascularized human plasma gel scaffold has great potential in skin tissue engineering.

scholarly journals The torsional alignment changed significantly in growing rabbits after patella dislocation by a three-dimensional measurement

2020 ◽  
Author(s):  
Jinghui Niu ◽  
Qi Qi ◽  
Kang Piao ◽  
Kuo Hao ◽  
Fei Wang
Keyword(s):  
Three Dimensional ◽  
Patella Dislocation ◽  
Control Group ◽  
Lateral Dislocation ◽  
Post Surgery ◽  
Femoral Version ◽  
Three Dimensional Measurement ◽  
Torsional Malalignment ◽  
And Control ◽  
Experimental Group

Abstract Background: Torsional malalignment has been considered as a risk factor for patella dislocation. But the influence of patella dislocation for torsional alignment development remains unknown. The present study aims to investigate whether the torsion alteration of the hindlimb occur after patella dislocation in growing rabbits. Methods: In the present study, 30 one-month old rabbits were included. The experimental group consists of 30 left knees of rabbits and were underwent patella lateral dislocation. And the control group consists of 30 right knees and no surgical procedure was performed. A CT scan was performed on each knee when the surgery was finished and at the time the rabbits were skeletal mature (5 months post-surgery). The angles of femoral version and tibial torsion were measured using a three-dimensional method and analyzed between the experimental group and control group. Results: The femoral version and tibia torsion in the experimental and control group immediately after surgery were not different significantly. However, 5 months after surgery, the femoral version angle of the experimental group (-5.50±6.13°) was significantly different with that of the experimental group (-10.90±4.74°)(P < 0.05). But the tibia torsion angle in the experimental group (7.17±7.25°) and control group (4.47±6.34°) were not significantly different (P = 0.144). Conclusion: From this study, patella dislocation can lead to alteration of femoral version in growing rabbits. This may indicate the early treatment for patella dislocation in children is particularly important to avoid torsional malalignment in the future. These findings may develop pathology and etiology of patella dislocation.

scholarly journals Using Three-Dimensional Gait Data for Foot/Ankle Orthopaedic Surgery

2009 ◽  
Vol 3 (1) ◽  
pp. 89-95 ◽  
Author(s):  
Gwyneth de Vries ◽  
Kevin Roy ◽  
Victoria Chester
Keyword(s):  
Gait Analysis ◽  
Motion Capture ◽  
Tendon Transfer ◽  
Treatment Effectiveness ◽  
Treatment Plan ◽  
Three Dimensional ◽  
Gait Pattern ◽  
Posterior Tibial Tendon ◽  
Post Surgery ◽  
Stiff Knee

We present the case of a forty year old male who sustained a torn carotid during strenuous physical activity. This was followed by a right hemispheric stroke due to a clot associated with the carotid. Upon recovery, the patient’s gait was characterized as hemiparetic with a stiff-knee pattern, a fixed flexion deformity of the toe flexors, and a hindfoot varus. Based on clinical exams and radiographs, the surgical treatment plan was established and consisted of correction of the forefoot deformities, possible hamstrings lengthening, and tendon transfer of the posterior tibial tendon to the dorsolateral foot. To aid in surgical planning, a three-dimensional gait analysis was conducted using a state-of-the-art motion capture system. Data from this analysis provided insight into the pathomechanics of the patient’s gait pattern. A forefoot driven hindfoot varus was evident from the presurgical data and the tendon transfer procedure was deemed unnecessary. A computer was used in the OR to provide surgeons with animations of the patient’s gait and graphical results as needed. A second gait analysis was conducted 6 weeks post surgery, shortly after cast removal. Post-surgical gait data showed improved foot segment orientation and position. Motion capture data provides clinicians with detailed information on the multisegment kinematics of foot motion during gait, before and during surgery. Further, treatment effectiveness can be evaluated by repeating gait analyses after recovery.

scholarly journals Hindlimb torsional alignment changes in growing rabbits after patellar dislocation

2021 ◽  
Author(s):  
Jinghui Niu ◽  
Qi Qi ◽  
Kang Piao ◽  
Kuo Hao ◽  
Iftekhar Sharif ◽  
...  
Keyword(s):  
Patellar Dislocation ◽  
Three Dimensional ◽  
Control Group ◽  
Tibial Torsion ◽  
Lateral Dislocation ◽  
Post Surgery ◽  
Femoral Version ◽  
Torsional Malalignment ◽  
And Control ◽  
Experimental Group

Abstract Background: Torsional malalignment has been considered as a risk factor for patellar dislocation. But the influence of patellar dislocation for torsional alignment development remains unknown. The present study aims to investigate whether the torsional alteration of the hindlimb occurs after patellar dislocation in growing rabbits. Methods: In the present study, 30 one-month-old rabbits were included. The experimental group consisted of 30 left knees of rabbits which underwent patellar lateral dislocation. The control group consisted of 30 right knees of the rabbits which no surgical procedure was performed. The Computed Tomography (CT) scan was performed after the surgery and at the point the rabbits were skeletal mature (5 months post-surgery). The angles of femoral version and tibial torsion were measured using a three-dimensional method and analyzed between the experimental group and the control group. Results: After the surgery, the femoral version and tibial torsion in the experimental and control group were not significantly different. However, 5 months after surgery, the angle of femoral version in the experimental group (-5.50 ± 6.13°) was significantly different from that in the control group (-10.90 ± 4.74°) (P < 0.05). But the angle of tibial torsion in the experimental group (7.17 ± 7.25°) and control group (4.47 ± 6.34°) were not significantly different (P = 0.144). Conclusion: From this study, patellar dislocation can lead to alteration of femoral version in growing rabbits. So patellar dislocation may affect on lower extremity alignment. These findings may develop pathology and etiology of patellar dislocation.

scholarly journals A Look from the Inside: MicroCT Analysis of Burned Bones

2015 ◽  
Vol 6 (2) ◽  
pp. 258-266 ◽  
Author(s):  
Francesco Boschin ◽  
Clément Zanolli ◽  
Federico Bernardini ◽  
Francesco Princivalle ◽  
Claudio Tuniz
Keyword(s):  
Roe Deer ◽  
Three Dimensional ◽  
Cortical Region ◽  
Analytical Potential ◽  
Bone Changes ◽  
Different Temperatures ◽  
Computed Microtomography ◽  
Cracking Pattern ◽  
Microct Imaging ◽  
Archaeological Analysis

MicroCT imaging is increasingly used in paleoanthropological and zooarchaeological research to analyse the internal microstructure of bone, replacing comparatively invasive and destructive methods. Consequently the analytical potential of this relatively new 3D imaging technology can be enhanced by developing discipline specific protocols for archaeological analysis. Here we examine how the microstructure of mammal bone changes after burning and explore if X-ray computed microtomography (microCT) can be used to obtain reliable information from burned specimens. We subjected domestic pig, roe deer, and red fox bones to burning at different temperatures and for different periods using an oven and an open fire. We observed significant changes in the three-dimensional microstructure of trabecular bone, suggesting that biomechanical studies or other analyses (for instance, determination of age-at-death) can be compromised by burning. In addition, bone subjected to very high temperatures (600°C or more) became cracked, posing challenges for quantifying characteristics of bone microstructure. Specimens burned at 600°C or greater temperatures, exhibit a characteristic criss-cross cracking pattern concentrated in the cortical region of the epiphyses. This feature, which can be readily observed on the surface of whole bone, could help the identification of heavily burned specimens that are small fragments, where color and surface texture are altered by diagenesis or weathering.

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