�ݺ�ߣshows by User: DNG77

�ݺ�ߣshows by User: DNG77 / http://www.slideshare.net/images/logo.gif �ݺ�ߣshows by User: DNG77 / Fri, 16 Jun 2023 20:23:54 GMT �ݺ�ߣShare feed for �ݺ�ߣshows by User: DNG77 MELANOGENESIS AND PHOTOBIOLOGY.pptx /slideshow/melanogenesis-and-photobiologypptx/258460501 melanogenesisandphotobiology-230616202354-e39bd0b7
ned as the development of new radiculopathy or myelopathy of a motion segment adjacent to the site of a previous arthrodesis of the spine (either superior or inferior).1 Studies have shown that the prevalence of symptomatic ASD ranges from 9 to 17%, with an annual incidence be- tween 1.5% and 4% in patients who under- went anterior cervical diskectomy and fusion.24 Although there is controversy surrounding the origins of ASD and whether or not it is a function of surgery or a natural progression of disease, multiple biomechanical studies have suggested that arthrodesis leads to increased loading of adjacent segments, which in turn leads to disk degeneration.1 In terms of cervical alignment, it is postu- lated that kyphotic angulation could potentially cause a shift of cervical loading from the poste- rior columns to the anterior column, in turn leading to unnatural loading of adjacent seg- ments.1 Recently, a systematic review of the literature was completed examining a possible correlation between cervical sagittal imbalance and adjacent segment pathology. It was de- termined that five poorquality retrospective studies demonstrated level III evidence of a correlation between cervical sagittal malalign- ment and adjacent segme]]>
ned as the development of new radiculopathy or myelopathy of a motion segment adjacent to the site of a previous arthrodesis of the spine (either superior or inferior).1 Studies have shown that the prevalence of symptomatic ASD ranges from 9 to 17%, with an annual incidence be- tween 1.5% and 4% in patients who under- went anterior cervical diskectomy and fusion.24 Although there is controversy surrounding the origins of ASD and whether or not it is a function of surgery or a natural progression of disease, multiple biomechanical studies have suggested that arthrodesis leads to increased loading of adjacent segments, which in turn leads to disk degeneration.1 In terms of cervical alignment, it is postu- lated that kyphotic angulation could potentially cause a shift of cervical loading from the poste- rior columns to the anterior column, in turn leading to unnatural loading of adjacent seg- ments.1 Recently, a systematic review of the literature was completed examining a possible correlation between cervical sagittal imbalance and adjacent segment pathology. It was de- termined that five poorquality retrospective studies demonstrated level III evidence of a correlation between cervical sagittal malalign- ment and adjacent segme]]> Fri, 16 Jun 2023 20:23:54 GMT /slideshow/melanogenesis-and-photobiologypptx/258460501 DNG77@slideshare.net(DNG77) MELANOGENESIS AND PHOTOBIOLOGY.pptx DNG77 ned as the development of new radiculopathy or myelopathy of a motion segment adjacent to the site of a previous arthrodesis of the spine (either superior or inferior).1 Studies have shown that the prevalence of symptomatic ASD ranges from 9 to 17%, with an annual incidence be- tween 1.5% and 4% in patients who under- went anterior cervical diskectomy and fusion.24 Although there is controversy surrounding the origins of ASD and whether or not it is a function of surgery or a natural progression of disease, multiple biomechanical studies have suggested that arthrodesis leads to increased loading of adjacent segments, which in turn leads to disk degeneration.1 In terms of cervical alignment, it is postu- lated that kyphotic angulation could potentially cause a shift of cervical loading from the poste- rior columns to the anterior column, in turn leading to unnatural loading of adjacent seg- ments.1 Recently, a systematic review of the literature was completed examining a possible correlation between cervical sagittal imbalance and adjacent segment pathology. It was de- termined that five poorquality retrospective studies demonstrated level III evidence of a correlation between cervical sagittal malalign- ment and adjacent segme <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/melanogenesisandphotobiology-230616202354-e39bd0b7-thumbnail.jpg?width=120&height=120&fit=bounds" /><br> ned as the development of new radiculopathy or myelopathy of a motion segment adjacent to the site of a previous arthrodesis of the spine (either superior or inferior).1 Studies have shown that the prevalence of symptomatic ASD ranges from 9 to 17%, with an annual incidence be- tween 1.5% and 4% in patients who under- went anterior cervical diskectomy and fusion.24 Although there is controversy surrounding the origins of ASD and whether or not it is a function of surgery or a natural progression of disease, multiple biomechanical studies have suggested that arthrodesis leads to increased loading of adjacent segments, which in turn leads to disk degeneration.1 In terms of cervical alignment, it is postu- lated that kyphotic angulation could potentially cause a shift of cervical loading from the poste- rior columns to the anterior column, in turn leading to unnatural loading of adjacent seg- ments.1 Recently, a systematic review of the literature was completed examining a possible correlation between cervical sagittal imbalance and adjacent segment pathology. It was de- termined that five poorquality retrospective studies demonstrated level III evidence of a correlation between cervical sagittal malalign- ment and adjacent segme

MELANOGENESIS AND PHOTOBIOLOGY.pptx from Darshan Gowda

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0 GENETIC IN DERMATOLOGY.pptx /slideshow/genetic-in-dermatologypptx/258460460 geneticindermatology-230616201520-5e2bbc20
on of the cranial or caudal cortex aloce the strength of fixation weaker compared with conventional lateral mass screws (which is in- serted under the posterior arch). This is be- cause the conventional lateral mass screws do not have purchase in the posterior arch at all. However, if perforation of both cranial and cau- dal cortices of the posterior arch does occur and extends via a vertical split to the lateral mass, this can theoretically weaken the strength of fixation. This can occur during tapping or screw insertion rather than during drilling, and likely results from the threads of a tap or screw, which have a larger outer diameter tck in the cortical bone.12 For this reason, we prefer to overdrill the posterior arch with a highspeed bur to ce screw being inserted. We readily perform]]>
on of the cranial or caudal cortex aloce the strength of fixation weaker compared with conventional lateral mass screws (which is in- serted under the posterior arch). This is be- cause the conventional lateral mass screws do not have purchase in the posterior arch at all. However, if perforation of both cranial and cau- dal cortices of the posterior arch does occur and extends via a vertical split to the lateral mass, this can theoretically weaken the strength of fixation. This can occur during tapping or screw insertion rather than during drilling, and likely results from the threads of a tap or screw, which have a larger outer diameter tck in the cortical bone.12 For this reason, we prefer to overdrill the posterior arch with a highspeed bur to ce screw being inserted. We readily perform]]> Fri, 16 Jun 2023 20:15:20 GMT /slideshow/genetic-in-dermatologypptx/258460460 DNG77@slideshare.net(DNG77) GENETIC IN DERMATOLOGY.pptx DNG77 on of the cranial or caudal cortex aloce the strength of fixation weaker compared with conventional lateral mass screws (which is in- serted under the posterior arch). This is be- cause the conventional lateral mass screws do not have purchase in the posterior arch at all. However, if perforation of both cranial and cau- dal cortices of the posterior arch does occur and extends via a vertical split to the lateral mass, this can theoretically weaken the strength of fixation. This can occur during tapping or screw insertion rather than during drilling, and likely results from the threads of a tap or screw, which have a larger outer diameter tck in the cortical bone.12 For this reason, we prefer to overdrill the posterior arch with a highspeed bur to ce screw being inserted. We readily perform <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/geneticindermatology-230616201520-5e2bbc20-thumbnail.jpg?width=120&height=120&fit=bounds" /><br> on of the cranial or caudal cortex aloce the strength of fixation weaker compared with conventional lateral mass screws (which is in- serted under the posterior arch). This is be- cause the conventional lateral mass screws do not have purchase in the posterior arch at all. However, if perforation of both cranial and cau- dal cortices of the posterior arch does occur and extends via a vertical split to the lateral mass, this can theoretically weaken the strength of fixation. This can occur during tapping or screw insertion rather than during drilling, and likely results from the threads of a tap or screw, which have a larger outer diameter tck in the cortical bone.12 For this reason, we prefer to overdrill the posterior arch with a highspeed bur to ce screw being inserted. We readily perform

GENETIC IN DERMATOLOGY.pptx from Darshan Gowda

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0 https://cdn.slidesharecdn.com/profile-photo-DNG77-48x48.jpg?cb=1686946074 2nd yr M.B.B.S A.J.INSTITUTE OF MEDICAL SCIENCES KUNTIKANA,MANGALORE https://cdn.slidesharecdn.com/ss_thumbnails/melanogenesisandphotobiology-230616202354-e39bd0b7-thumbnail.jpg?width=320&height=320&fit=bounds slideshow/melanogenesis-and-photobiologypptx/258460501 MELANOGENESIS AND PHOT... https://cdn.slidesharecdn.com/ss_thumbnails/geneticindermatology-230616201520-5e2bbc20-thumbnail.jpg?width=320&height=320&fit=bounds slideshow/genetic-in-dermatologypptx/258460460 GENETIC IN DERMATOLOGY...