This study suggested that the GM has a topographical relation with the arterial structures, perhaps for embryological reasons.

SUMMARY:Total knee arthroplasty has increased substantially, however anatomical studies of the genicular arteries (GAs) in this region are rare. The aim of this study was to identify the pattern and branching points of GAs and their relationship. In 42 lower limbs, the pattern and branching points of GAs were confirmed. The horizontal line which extends between the most prominent point of the lateral and medial margins of patella was defined as a reference line. The distance of branching point of the GAs from the reference line was measured, and the correlations between these points were analyzed. The superior lateral and medial genicular arteries (SLGA and SMGA) were located at + 38.17 ± 3.10 mm and + 32.68 ± 3.83 mm from the reference line, respectively. The middle genicular artery (MGA) was originated from + 7.57 ± 3.98 mm. The inferior lateral and medial genicular arteries (ILGA and IMGA) were located at -18.46 ± 2.63 mm and -24.09 ± 3.52 mm, respectively. The branching points of the SLGA changed significantly according to the arterial branching pattern with the MGA. In addition, the branching point of the MGA had positive relationships with that of the IMGA (r = 0.385, p <0.05) and that of the ILGA (r = 0.348, p <0.05), respectively. In this study, topography of the GAs and its anatomical association were demonstrated for the first time in Korean cadavers. Knowledge of the topography about frequent variation would be useful for safe surgery and clinical procedures.

Knowledge of anatomical variations of the limb’s main arteries is significant for the clinicians. Thus, this study is aimed at examining the branching pattern and anatomical variations of the axillary artery. We conducted research on 59 upper limbs of adult human donated cadavers. All axillary artery branches’ origins were assessed, and the correlations between points of origins and variations of specific branches were evaluated. The average length of the axillary artery was found to be 11.22 cm, and this length was defined as reference line. Based on this reference line, the first, second, and third parts were 37.56%, 39%, and 30.05%, respectively. The STA was originated from 25.11%. The TAA and LTA were 42.67% and 54.82%, respectively. The SSA, ACHA, and PCHA were 64.72%, 83.89%, and 84.53%, respectively. The origin of LTA was correlated with that of SSA ( R = 0.473 , P < 0.05 ) and AHCA ( R = 0.307 , P < 0.05 ), respectively. And there was a positive correlation between AHCA and PHCA ( R = 0.705 , P < 0.05 ). The number of branches ranged from 3~6, and 9 types were shown. The most frequent branching pattern was common origin of the LTA and SSA (22/59). And AHCA and PHCA were originated together in 19 cases, and both patterns were combined in 12 cases. TTA and LTA branched together in 9 cases, and common trunk for the SSA, PHCA, and AHCA was found in 2 cases. According to this pattern, the origin of LTA and PCHA was significantly different. This information is particularly useful for surgeons and clinicians.

Knowledge of the variations of the ECRL is important for surgeons because the presence of the ECRL variations increases the incidence of iatrogenic injuries during surgery and invasive procedures.

In recent years, the use of smartphone applications for education is increasing. Although applications are being used for various educational aspects such as exams, the study of medical educational application is lacking. This study aims to investigate the effect of educational applications on medical education by analyzing the utility of and satisfaction with educational applications for histology courses in medical schools. The researcher employed an application called "BAND" that can be used to upload and share microscopic figures taken during histology lectures. A total of 82 first-grade students from Keimyung University Medical School who participated in this study expressed satisfaction with using "BAND". A total of 68 (83%) students were satisfied with learning histology through the application, and 72 (88%) students indicated that using the application was greatly helpful for the organizational practice test and expressed overall satisfaction with the application use. This benefit was because of easy contact (29.9%), searching ability (29.9%), and memory with humorous methods by friends (20.7%). And it application is most helpful during epithelium section (20.8%) and student want to use this application for anatomy (40.3%) or microbiology (38.8%) practices. The study results imply the need for further research so that the educational application can be used in various medical education fields in the future.