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Nwakile I. Ojike - One of the best experts on this subject based on the ideXlab platform.
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Vascular risk reduction during anterior surgical approach sacroiliac joint plating
Injury-international Journal of The Care of The Injured, 2012Co-Authors: Sreenivasa R. Alla, Craig S. Roberts, Nwakile I. OjikeAbstract:Abstract Introduction Open reduction and internal fixation of sacroiliac (SI) joint is often performed through an anterior approach. However, there were no studies to our knowledge which described the “at risk area” for injury to the Nutrient Artery as it relates to open reduction and internal fixation of the SI joint. The purpose of this study was to determine the “at risk area” for the Nutrient Artery during anterior surgical approaches to the SI joint and to define the safe location of the plate for SI joint fixation. Materials and methods Six right and five left hemipelvises (three male and three female cadavers) were dissected with a mean age of 72 years (range, 51–90 years). Three bony landmarks including the pelvic brim, anterior SI joint line, and the anterior superior iliac spine (ASIS) were identified to quantify the measurements. Three different measurements were taken: from the Nutrient foramen to the anterior SI joint line; from the Nutrient foramen to the nearest point on the pelvic brim; from the Nutrient foramen to ASIS using a flexible ruler with a 1 mm base. Results The Nutrient Artery courses across the SI joint to enter into the Nutrient foramen. Whilst exposing the internal surface of the SI joint, the Nutrient foramen was identified at a mean distance of 88.1 mm medial to ASIS, 20.1 mm above the pelvic brim, and 20.1 mm lateral to SI joint. The variability of the location of the Nutrient foramen was identified and was located from 80 mm to 95 mm medial to the ASIS, 12 mm to 25 mm lateral to the SI joint, and 16 mm to 30 mm above the pelvic brim. Conclusion Familiarity of the vasculature of the internal pelvis is of utmost importance for the surgeon when considering operative fixation of the anterior SI joint. We were able to identify the relation of the Nutrient Artery to the anatomic landmarks of the internal pelvis and to define the “at risk area” for the Nutrient Artery. We believe increased understanding of the anatomy of the Nutrient Artery will aid in the avoidance of vascular complications during internal fixation of the anterior SI joint.
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Vascular risk reduction during anterior surgical approach sacroiliac joint plating.
Injury, 2012Co-Authors: Sreenivasa R. Alla, Craig S. Roberts, Nwakile I. OjikeAbstract:Open reduction and internal fixation of sacroiliac (SI) joint is often performed through an anterior approach. However, there were no studies to our knowledge which described the "at risk area" for injury to the Nutrient Artery as it relates to open reduction and internal fixation of the SI joint. The purpose of this study was to determine the "at risk area" for the Nutrient Artery during anterior surgical approaches to the SI joint and to define the safe location of the plate for SI joint fixation. Six right and five left hemipelvises (three male and three female cadavers) were dissected with a mean age of 72 years (range, 51-90 years). Three bony landmarks including the pelvic brim, anterior SI joint line, and the anterior superior iliac spine (ASIS) were identified to quantify the measurements. Three different measurements were taken: from the Nutrient foramen to the anterior SI joint line; from the Nutrient foramen to the nearest point on the pelvic brim; from the Nutrient foramen to ASIS using a flexible ruler with a 1mm base. The Nutrient Artery courses across the SI joint to enter into the Nutrient foramen. Whilst exposing the internal surface of the SI joint, the Nutrient foramen was identified at a mean distance of 88.1mm medial to ASIS, 20.1mm above the pelvic brim, and 20.1mm lateral to SI joint. The variability of the location of the Nutrient foramen was identified and was located from 80mm to 95mm medial to the ASIS, 12mm to 25mm lateral to the SI joint, and 16mm to 30mm above the pelvic brim. Familiarity of the vasculature of the internal pelvis is of utmost importance for the surgeon when considering operative fixation of the anterior SI joint. We were able to identify the relation of the Nutrient Artery to the anatomic landmarks of the internal pelvis and to define the "at risk area" for the Nutrient Artery. We believe increased understanding of the anatomy of the Nutrient Artery will aid in the avoidance of vascular complications during internal fixation of the anterior SI joint. Copyright © 2012 Elsevier Ltd. All rights reserved.
Sreenivasa R. Alla - One of the best experts on this subject based on the ideXlab platform.
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Vascular risk reduction during anterior surgical approach sacroiliac joint plating
Injury-international Journal of The Care of The Injured, 2012Co-Authors: Sreenivasa R. Alla, Craig S. Roberts, Nwakile I. OjikeAbstract:Abstract Introduction Open reduction and internal fixation of sacroiliac (SI) joint is often performed through an anterior approach. However, there were no studies to our knowledge which described the “at risk area” for injury to the Nutrient Artery as it relates to open reduction and internal fixation of the SI joint. The purpose of this study was to determine the “at risk area” for the Nutrient Artery during anterior surgical approaches to the SI joint and to define the safe location of the plate for SI joint fixation. Materials and methods Six right and five left hemipelvises (three male and three female cadavers) were dissected with a mean age of 72 years (range, 51–90 years). Three bony landmarks including the pelvic brim, anterior SI joint line, and the anterior superior iliac spine (ASIS) were identified to quantify the measurements. Three different measurements were taken: from the Nutrient foramen to the anterior SI joint line; from the Nutrient foramen to the nearest point on the pelvic brim; from the Nutrient foramen to ASIS using a flexible ruler with a 1 mm base. Results The Nutrient Artery courses across the SI joint to enter into the Nutrient foramen. Whilst exposing the internal surface of the SI joint, the Nutrient foramen was identified at a mean distance of 88.1 mm medial to ASIS, 20.1 mm above the pelvic brim, and 20.1 mm lateral to SI joint. The variability of the location of the Nutrient foramen was identified and was located from 80 mm to 95 mm medial to the ASIS, 12 mm to 25 mm lateral to the SI joint, and 16 mm to 30 mm above the pelvic brim. Conclusion Familiarity of the vasculature of the internal pelvis is of utmost importance for the surgeon when considering operative fixation of the anterior SI joint. We were able to identify the relation of the Nutrient Artery to the anatomic landmarks of the internal pelvis and to define the “at risk area” for the Nutrient Artery. We believe increased understanding of the anatomy of the Nutrient Artery will aid in the avoidance of vascular complications during internal fixation of the anterior SI joint.
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Vascular risk reduction during anterior surgical approach sacroiliac joint plating.
Injury, 2012Co-Authors: Sreenivasa R. Alla, Craig S. Roberts, Nwakile I. OjikeAbstract:Open reduction and internal fixation of sacroiliac (SI) joint is often performed through an anterior approach. However, there were no studies to our knowledge which described the "at risk area" for injury to the Nutrient Artery as it relates to open reduction and internal fixation of the SI joint. The purpose of this study was to determine the "at risk area" for the Nutrient Artery during anterior surgical approaches to the SI joint and to define the safe location of the plate for SI joint fixation. Six right and five left hemipelvises (three male and three female cadavers) were dissected with a mean age of 72 years (range, 51-90 years). Three bony landmarks including the pelvic brim, anterior SI joint line, and the anterior superior iliac spine (ASIS) were identified to quantify the measurements. Three different measurements were taken: from the Nutrient foramen to the anterior SI joint line; from the Nutrient foramen to the nearest point on the pelvic brim; from the Nutrient foramen to ASIS using a flexible ruler with a 1mm base. The Nutrient Artery courses across the SI joint to enter into the Nutrient foramen. Whilst exposing the internal surface of the SI joint, the Nutrient foramen was identified at a mean distance of 88.1mm medial to ASIS, 20.1mm above the pelvic brim, and 20.1mm lateral to SI joint. The variability of the location of the Nutrient foramen was identified and was located from 80mm to 95mm medial to the ASIS, 12mm to 25mm lateral to the SI joint, and 16mm to 30mm above the pelvic brim. Familiarity of the vasculature of the internal pelvis is of utmost importance for the surgeon when considering operative fixation of the anterior SI joint. We were able to identify the relation of the Nutrient Artery to the anatomic landmarks of the internal pelvis and to define the "at risk area" for the Nutrient Artery. We believe increased understanding of the anatomy of the Nutrient Artery will aid in the avoidance of vascular complications during internal fixation of the anterior SI joint. Copyright © 2012 Elsevier Ltd. All rights reserved.
L. Nolan - One of the best experts on this subject based on the ideXlab platform.
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Short-term response of epiphyseal plate cell populations following selective devascularization and microsurgical revascularization.
Microsurgery, 1994Co-Authors: C V A Bowen, J. D. Fowler, Peter W Bray, Martin I Boyer, L. NolanAbstract:The distal femoral epiphyseal plates of 21 8-week-old New Zealand white rabbits were totally or partially (Nutrient Artery only) devascularized, or devascularized and then microsurgically revascularized. Sacrifice was at 24, 48 or 72 hours postoperatively. The heights of the proliferative and hypertrophic zones of the epiphyseal plates operated upon were compared with the contralateral control epiphyseal plates for both the central and the peripheral regions of the epiphyseal plate. Neither extent of devascularization nor revascularization had a significant effect on the height of the proliferative zone of chondrocytes at any of the follow-up intervals. Selective devascularization of the Nutrient Artery led to a significant increase in height of the central region of the hypertrophic zone of chondrocytes at 48 and 72 hours. Microsurgical revascularization did not lead to a significant change in the height of either the central or the peripheral regions of the hypertrophic zone of chondrocytes at any of the follow-up intervals. This study is another ‘building block’ experiment toward vascularized epiphyseal plate transplantation in humans. © 1994 Wiley-Liss, Inc.
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Short-term response of epiphyseal plate cell populations following selective devascularization and microsurgical revascularization.
Microsurgery, 1994Co-Authors: C V A Bowen, J. D. Fowler, Peter W Bray, Martin I Boyer, L. NolanAbstract:The distal femoral epiphyseal plates of 21 8-week-old New Zealand white rabbits were totally or partially (Nutrient Artery only) devascularized, or devascularized and then microsurgically revascularized. Sacrifice was at 24, 48 or 72 hours postoperatively. The heights of the proliferative and hypertrophic zones of the epiphyseal plates operated upon were compared with the contralateral control epiphyseal plates for both the central and the peripheral regions of the epiphyseal plate. Neither extent of devascularization nor revascularization had a significant effect on the height of the proliferative zone of chondrocytes at any of the follow-up intervals. Selective devascularization of the Nutrient Artery led to a significant increase in height of the central region of the hypertrophic zone of chondrocytes at 48 and 72 hours. Microsurgical revascularization did not lead to a significant change in the height of either the central or the peripheral regions of the hypertrophic zone of chondrocytes at any of the follow-up intervals. This study is another 'building block' experiment toward vascularized epiphyseal plate transplantation in humans.
Craig S. Roberts - One of the best experts on this subject based on the ideXlab platform.
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Vascular risk reduction during anterior surgical approach sacroiliac joint plating
Injury-international Journal of The Care of The Injured, 2012Co-Authors: Sreenivasa R. Alla, Craig S. Roberts, Nwakile I. OjikeAbstract:Abstract Introduction Open reduction and internal fixation of sacroiliac (SI) joint is often performed through an anterior approach. However, there were no studies to our knowledge which described the “at risk area” for injury to the Nutrient Artery as it relates to open reduction and internal fixation of the SI joint. The purpose of this study was to determine the “at risk area” for the Nutrient Artery during anterior surgical approaches to the SI joint and to define the safe location of the plate for SI joint fixation. Materials and methods Six right and five left hemipelvises (three male and three female cadavers) were dissected with a mean age of 72 years (range, 51–90 years). Three bony landmarks including the pelvic brim, anterior SI joint line, and the anterior superior iliac spine (ASIS) were identified to quantify the measurements. Three different measurements were taken: from the Nutrient foramen to the anterior SI joint line; from the Nutrient foramen to the nearest point on the pelvic brim; from the Nutrient foramen to ASIS using a flexible ruler with a 1 mm base. Results The Nutrient Artery courses across the SI joint to enter into the Nutrient foramen. Whilst exposing the internal surface of the SI joint, the Nutrient foramen was identified at a mean distance of 88.1 mm medial to ASIS, 20.1 mm above the pelvic brim, and 20.1 mm lateral to SI joint. The variability of the location of the Nutrient foramen was identified and was located from 80 mm to 95 mm medial to the ASIS, 12 mm to 25 mm lateral to the SI joint, and 16 mm to 30 mm above the pelvic brim. Conclusion Familiarity of the vasculature of the internal pelvis is of utmost importance for the surgeon when considering operative fixation of the anterior SI joint. We were able to identify the relation of the Nutrient Artery to the anatomic landmarks of the internal pelvis and to define the “at risk area” for the Nutrient Artery. We believe increased understanding of the anatomy of the Nutrient Artery will aid in the avoidance of vascular complications during internal fixation of the anterior SI joint.
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Vascular risk reduction during anterior surgical approach sacroiliac joint plating.
Injury, 2012Co-Authors: Sreenivasa R. Alla, Craig S. Roberts, Nwakile I. OjikeAbstract:Open reduction and internal fixation of sacroiliac (SI) joint is often performed through an anterior approach. However, there were no studies to our knowledge which described the "at risk area" for injury to the Nutrient Artery as it relates to open reduction and internal fixation of the SI joint. The purpose of this study was to determine the "at risk area" for the Nutrient Artery during anterior surgical approaches to the SI joint and to define the safe location of the plate for SI joint fixation. Six right and five left hemipelvises (three male and three female cadavers) were dissected with a mean age of 72 years (range, 51-90 years). Three bony landmarks including the pelvic brim, anterior SI joint line, and the anterior superior iliac spine (ASIS) were identified to quantify the measurements. Three different measurements were taken: from the Nutrient foramen to the anterior SI joint line; from the Nutrient foramen to the nearest point on the pelvic brim; from the Nutrient foramen to ASIS using a flexible ruler with a 1mm base. The Nutrient Artery courses across the SI joint to enter into the Nutrient foramen. Whilst exposing the internal surface of the SI joint, the Nutrient foramen was identified at a mean distance of 88.1mm medial to ASIS, 20.1mm above the pelvic brim, and 20.1mm lateral to SI joint. The variability of the location of the Nutrient foramen was identified and was located from 80mm to 95mm medial to the ASIS, 12mm to 25mm lateral to the SI joint, and 16mm to 30mm above the pelvic brim. Familiarity of the vasculature of the internal pelvis is of utmost importance for the surgeon when considering operative fixation of the anterior SI joint. We were able to identify the relation of the Nutrient Artery to the anatomic landmarks of the internal pelvis and to define the "at risk area" for the Nutrient Artery. We believe increased understanding of the anatomy of the Nutrient Artery will aid in the avoidance of vascular complications during internal fixation of the anterior SI joint. Copyright © 2012 Elsevier Ltd. All rights reserved.
C V A Bowen - One of the best experts on this subject based on the ideXlab platform.
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Short-term response of epiphyseal plate cell populations following selective devascularization and microsurgical revascularization.
Microsurgery, 1994Co-Authors: C V A Bowen, J. D. Fowler, Peter W Bray, Martin I Boyer, L. NolanAbstract:The distal femoral epiphyseal plates of 21 8-week-old New Zealand white rabbits were totally or partially (Nutrient Artery only) devascularized, or devascularized and then microsurgically revascularized. Sacrifice was at 24, 48 or 72 hours postoperatively. The heights of the proliferative and hypertrophic zones of the epiphyseal plates operated upon were compared with the contralateral control epiphyseal plates for both the central and the peripheral regions of the epiphyseal plate. Neither extent of devascularization nor revascularization had a significant effect on the height of the proliferative zone of chondrocytes at any of the follow-up intervals. Selective devascularization of the Nutrient Artery led to a significant increase in height of the central region of the hypertrophic zone of chondrocytes at 48 and 72 hours. Microsurgical revascularization did not lead to a significant change in the height of either the central or the peripheral regions of the hypertrophic zone of chondrocytes at any of the follow-up intervals. This study is another ‘building block’ experiment toward vascularized epiphyseal plate transplantation in humans. © 1994 Wiley-Liss, Inc.
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Short-term response of epiphyseal plate cell populations following selective devascularization and microsurgical revascularization.
Microsurgery, 1994Co-Authors: C V A Bowen, J. D. Fowler, Peter W Bray, Martin I Boyer, L. NolanAbstract:The distal femoral epiphyseal plates of 21 8-week-old New Zealand white rabbits were totally or partially (Nutrient Artery only) devascularized, or devascularized and then microsurgically revascularized. Sacrifice was at 24, 48 or 72 hours postoperatively. The heights of the proliferative and hypertrophic zones of the epiphyseal plates operated upon were compared with the contralateral control epiphyseal plates for both the central and the peripheral regions of the epiphyseal plate. Neither extent of devascularization nor revascularization had a significant effect on the height of the proliferative zone of chondrocytes at any of the follow-up intervals. Selective devascularization of the Nutrient Artery led to a significant increase in height of the central region of the hypertrophic zone of chondrocytes at 48 and 72 hours. Microsurgical revascularization did not lead to a significant change in the height of either the central or the peripheral regions of the hypertrophic zone of chondrocytes at any of the follow-up intervals. This study is another 'building block' experiment toward vascularized epiphyseal plate transplantation in humans.
