No abstract available.
Cadaver

Objectives: The celiac trunk (CT) is the first major branch of the abdominal aorta and typically gives rise to the left gastric artery (LGA), common hepatic artery (CHA), and splenic artery (SA), which supply blood to the abdominal viscera. Variations in the branching pattern of the CT exist and knowledge of such is crucial when performing surgical, laparoscopic, and angiographic procedures. The aim of this study is to determine the anatomic variations of the CT in adult Filipino cadavers and to compare the proportions of these with those reported in the foreign literature. Methods: Adult Filipino cadavers from the University of the Philippines College of Medicine Anatomy Laboratory were dissected by first year medical students from 2014-2019. The CT and its branches were identified, drawn on a separate piece of paper, and confirmed to be correct and accurate by an anatomist. The data collected from that period was reviewed. Percentages were calculated for the branching patterns identified. A Z-test of Two Populations was used to compare the results of the current study to that of Pinal-Garcia (2018), Pillay (2020) and Venieratos (2013). Results: A total of 107 drawings based on 107 dissected preserved cadavers were reviewed. Ninety-two specimens (85.98%) showed typical branching into the LGA, CHA, and SA. The CT presented as a true tripod (tripus Halleri) in 75 specimens (70.09%) and as a bifurcation with one of the three arteries arising first along the trunk (false tripod) in 17 specimens (15.89%). Nine cadavers (8.41%) showed additional branches arising from the CT and four (3.74%) showed bifurcation of the CT with the third branch arising from a different artery. Conclusion The most common configuration of the CT among Filipino adult cadavers is a true tripod, followed by a false tripod, additional branching, and bifurcation of the CT with the third branch arising elsewhere. The present study most closely resembles the results of the study of Venieratos.
Cadaver

PURPOSE: The purpose of this report is to evaluate the measured values of normal Korean calcaneus by conduct of a cadaveric study. MATERIALS AND METHODS: A total of 42 calcanei were obtained from Korean cadavers. A digital goniometer was used for measurement of Bohler's angle, Gissane angle, posterior facet articular inclination angle, and Fowler-Philip angle of calcaneus. A vernier caliper was used for measurement of the maximal antero-posterior length, maximal transverse width, and maximal height of calcaneus. RESULTS: The average Bohler's angle, Gissane angle, posterior facet articular inclination angle, and Fowler-Philip angle was 32.3degrees+/-5.0degrees, 114.4degrees+/-8.2degrees, 61.2degrees+/-4.4degrees, and 60.3degrees+/-7.6degrees. The average maximal antero-posterior length, maximal transverse width, and maximal height of calcaneus was 74.2+/-3.0 mm, 43.0+/-4.0 mm, and 42.5+/-3.0 mm. CONCLUSION: The measured values of normal Korean calcaneus were lower than the values reported in the international literature. Therefore, development of appropriate instruments reflecting the anatomical characteristics of Koreans will be needed.
Cadaver* ; Calcaneus*

Introduction: Dissecting cadavers to study Human Anatomy is an integral part of first year medical education. The aim of this study was to describe the experiences of the first year medical students during their first day of cadaver dissection. Methods: This study analyzed interviews of three first year medical students, chosen via purposive sampling, who were present during the first day of cadaver dissection in gross anatomy. Interviews were transcribed and analyzed through a Husserlian descriptive phenomenological approach. Results : Five common themes were identified: 1) fear of the unknown, 2) group dynamics, 3) sense of awe and amazement of the cadaver's body, 4) respect for the body, and 5) taming of death as a rite of passage to being a doctor. Conclusion Of the five emergent themes, taming death as a rite of passage to being a doctor is the essence of the experiences of the first year medical students during the first day of cadaver dissection.
Cadaver ; Anatomy

OBJECTIVE: When the pedicle screw insertion technique is failed or not applicable, C7 intralaminar screw insertion method has been used as an alternative or salvage fixation method recently. However, profound understanding of anatomy is required for safe application of the bilaterally crossing laminar screw at C7 in clinic. In this cadaveric study, we evaluated the anatomic feasibility of the bilateral crossing intralaminar screw insertion and especially focused on determination of proper screw entry point. METHODS: The C7 vertebrae from 18 adult specimens were studied. Morphometric measurements of the mid-laminar height, the minimum laminar thickness, the maximal screw length, and spino-laminar angle were performed and cross-sectioned vertically at the screw entry point (spino-laminar junction). The sectioned surface was equally divided into 3 parts and maximal thickness and surface area of the parts were measured. All measurements were obtained bilaterally. RESULTS: The mean mid-laminar height was 13.7 mm, mean minimal laminar thickness was 6.6 mm, mean maximal screw length was 24.6 mm, and mean spinolaminar angle was 50.8+/-4.7degrees. Based on the measured laminar thickness, the feasibility of 3.5 mm diameter intralaminar screw application was 83.3% (30 sides laminae out of total 36) when assuming a tolerance of 1 mm on each side. Cross-sectional measurement results showed that the mean maximal thickness of upper, middle, and lower thirds was 5.0 mm, 7.5 mm, and 7.3 mm, respectively, and mean surface area for each part was 21.2 mm2, 46.8 mm2, and 34.7 mm2, respectively. Fourteen (38.9%) sides of laminae would be feasible for 3.5 mm intralaminar screw insertion when upper thirds of C7 spino-laminar junction is the screw entry point. In case of middle and lower thirds of C7 spino-laminar junction, 32 (88.9%) and 28 (77.8%) sides of laminae were feasible for 3.5 mm screw insertion, respectively. CONCLUSION: The vertical cross-sectioned area of middle thirds at C7 spinolaminar junction was the largest area and 3.5 mm screw can be accommodated with 77.8% of feasibility when lower thirds were the screw entry point. Thus, selection of middle and lower thirds for each side of screw entry point in spino-laminar junction would be the safest way to place bilateral crossing laminar screw within the entire lamina. This anatomic study result will help surgeons to place the screw safely and accurately.
Adult ; Cadaver* ; Humans ; Spine

The facial artery is the largest and main arterial supply of the face, and the inferior and superior labial arteries supply blood to the lower and upper lips and intersect on the opposite site. The aim of this study was to provide quantitative data on the course of facial artery and the distribution of inferior and superior labial artery in perioral region. The location, distance, course, and diameter of the facial artery, inferior labial artery, and superior labial artery were measured directly on 50 hemifacial cadavers of Koreans and statistically analyzed using oneway ANOVA. The facial artery was located 18.50 mm lateral to the mouth corners (Cheilions). The inferior labial artery at its origin was located 15.11 mm inferior and 19.63 mm lateral to the Cheilions. The superior labial artery at its origin was located 5.83 mm superior and 11.28 mm lateral to the Cheilions. The diameter of facial artery, inferior labial artery, and superior labial artery was 2.19, 1.56, and 1.48 mm, respectively. The courses of the facial artery and it's branches showed no significant differences on laterality except for the diameter of the superior labial artery (p=0.026). The buccal branch of facial artery was showed in 44% of the cases in the deep layer of perioral region. In conclusion, this study provides that the data will be useful in predicting the courses of the facial artery and helpful for reconstructive surgery in perioral region.
Arteries* ; Cadaver ; Lip ; Mouth

This study is to provide details of the unique anatomical features on the alar lobule region in Korean nose. We hypothesized that the anatomy of this area differs according to the shape of the alar lobule. Based on the prominence and roundness of alar lobules, they were classified into horizontal and vertical types. A total of 20 fresh cadaver noses(10 for each type) were dissected. The anatomical differences between the horizontal and vertical types were investigated by gross and histologic studies. The alar lobule is composed of three layers, i.e., external skin, muscle, and vestibular skin. Profound differences between the two alar lobule types were evident in terms of the volume of the dilator naris anterior muscle, the insertion of the dilator naris posterior muscle, and the thickness of the external skin at the lateral end of the alar circumference. The horizontal type has a greater volume of dilator naris anterior muscle, an additional insertion of the dilator naris posterior muscle, and thicker external skin at the lateral end of the alar circumference than the vertical type. The Korean nose differs anatomically and morphologically from the Caucasian nose. This study shows that there are anatomic differences between the horizontal and vertical types of alar lobules in Korean nose.
Cadaver ; Nose* ; Skin

PURPOSE: This study aimed to find out whether there are relationships among anatomic characteristics of inferior oblique muscle insertion, corneal diameter, axial length and inferior oblique recession landmark. METHODS: Thirty-one Korean cadaver orbits were dissected to expose the full length of extraocular muscles and sclera, and then we measured the length from the recession landmark of inferior oblique to the lateral edge of insertion of inferior rectus and to the inferior edge of insertion of lateral rectus. RESULTS: The mean of angles between the inferior oblique muscle insertion and lateral rectus direction is 27.9+/-9.0degrees and the range is from 15 degrees to 50 degrees . There is a statistically significant correlation between cord length of 8 mm recession landmark of inferior oblique and angles of inferior oblique insertion with lateral rectus direction. We divided the shapes of inferior oblique insertion into straight and convexed curves. Twelve insertions are straight and thirteen insertions are curved. There is no statistically significant correlation between shape of inferior oblique insertion and cord length from recession landmark. In corneal diameter and axial length, we found correlations with cord length of 8 mm and 10 mm recession landmark of inferior oblique. CONCLUSIONS: We conclud that there are some correlations among anatomic characteristics, axial length and corneal diameter with recession landmark of inferior oblique.
Cadaver ; Muscles ; Orbit ; Sclera

PURPOSE: This study was performed to evaluate the effect of the implant recipient site preparation methods on primary stability of implants with the instruments of Osstell(TM) and Periotest(R) in the iliac bone of cadaver. METHODS AND MATERIALS: The 8 iliac bones in 4 cadavers and implants treated with resorbable blasting media (RBM) were used. Periotest(R) (Simens AG, Germany) and Osstell(TM)(Model 6 Resonance Frequency Analyser: Integration Diagnostics Ltd., Sweden) were used to measure primary stability of implants. Implants were inserted into the iliac crest of the cadaver. In control group, the recipient site was prepared according to the manufacturer's recommendation: 1.8 mm guide drill, 2.0 mm initial drill, 2.7 mm pilot drill, 2.7 mm twist drill, 3.0 mm twist drill, 3.3 mm pilot drill, 3.3 mm twist drill, and 3.3 mm countersink drill as well as tapping drill were used in order. In the group 1, implant recipient sites were prepared by sequentially drilling from 1.8 mm guide drill to 3.0 mm twist drill and then inserted implants without countersinking and tapping. In the group 2, implant recipient sites were prepared to 3.0 mm twist drill and countersink drill and then inserted implants without tapping. In the group 3, the sites were prepared to 3.0 mm twist drill and countersink drill as well as tapping drill. In the group 4, the sites were prepared to 3.3 mm twist drill. In the group 5, the sites were prepared to 3.3 mm twist drill and countersink drill. A total of 60 implants were placed (n=10). The stability was measured using Osstell(TM) and Periotest(R) mesiodistally and buccolingually. To compare the mean stability of each group statistically, One-way ANOVA was used and correlation of instrument were analyzed using SPSS 12.0. The results obtained were as follows; 1. The stability of group 1 measured using Osstell(TM) and Periotest(R) buccolingually showed the highest, and there are significant difference statistically between control group and experimental group 1,2,4 in each instruments respectively (P<0.05). 2. The stability of group 1 measured using Osstell(TM) and Periotest(R) mesiodistally showed the highest. There are significant difference statistically between control group and all experimental groups in Osstell(TM), and between control group and experimental group 1,2,3,4 (P<0.05). 3. There are high correlation between the measurements of Osstell(TM) and Periotest(R) (P<0.05). CONCLUSION: These results indicate that the primary stability of implant can be obtained by the recipient sites preparation with smaller diameter drill than that of implant or minimal drilling.
Cadaver ; Ilium ; Mandrillus

PURPOSE: This study was performed to evaluate the effect of the implant recipient site preparation methods on primary stability of implants with the instruments of Osstell(TM) and Periotest(R) in the iliac bone of cadaver. METHODS AND MATERIALS: The 8 iliac bones in 4 cadavers and implants treated with resorbable blasting media (RBM) were used. Periotest(R) (Simens AG, Germany) and Osstell(TM)(Model 6 Resonance Frequency Analyser: Integration Diagnostics Ltd., Sweden) were used to measure primary stability of implants. Implants were inserted into the iliac crest of the cadaver. In control group, the recipient site was prepared according to the manufacturer's recommendation: 1.8 mm guide drill, 2.0 mm initial drill, 2.7 mm pilot drill, 2.7 mm twist drill, 3.0 mm twist drill, 3.3 mm pilot drill, 3.3 mm twist drill, and 3.3 mm countersink drill as well as tapping drill were used in order. In the group 1, implant recipient sites were prepared by sequentially drilling from 1.8 mm guide drill to 3.0 mm twist drill and then inserted implants without countersinking and tapping. In the group 2, implant recipient sites were prepared to 3.0 mm twist drill and countersink drill and then inserted implants without tapping. In the group 3, the sites were prepared to 3.0 mm twist drill and countersink drill as well as tapping drill. In the group 4, the sites were prepared to 3.3 mm twist drill. In the group 5, the sites were prepared to 3.3 mm twist drill and countersink drill. A total of 60 implants were placed (n=10). The stability was measured using Osstell(TM) and Periotest(R) mesiodistally and buccolingually. To compare the mean stability of each group statistically, One-way ANOVA was used and correlation of instrument were analyzed using SPSS 12.0. The results obtained were as follows; 1. The stability of group 1 measured using Osstell(TM) and Periotest(R) buccolingually showed the highest, and there are significant difference statistically between control group and experimental group 1,2,4 in each instruments respectively (P<0.05). 2. The stability of group 1 measured using Osstell(TM) and Periotest(R) mesiodistally showed the highest. There are significant difference statistically between control group and all experimental groups in Osstell(TM), and between control group and experimental group 1,2,3,4 (P<0.05). 3. There are high correlation between the measurements of Osstell(TM) and Periotest(R) (P<0.05). CONCLUSION: These results indicate that the primary stability of implant can be obtained by the recipient sites preparation with smaller diameter drill than that of implant or minimal drilling.
Cadaver ; Ilium ; Mandrillus