ABSTRACT
A study on the prevalence and location of the Mongolian spot in 954 Thai children (491 males and 463 females) within one month of birth was undertaken at Siriraj Hospital, between 1982-1984. Mongolian spot was found in 882 cases (92.5%), 452 males and 430 females, usually in the sacrococcygeal (92.7%) and gluteal (94.7%) regions. Most of the spots were found in both regions. The size of the bluish-green Mongolian spot varied greatly.
ABSTRACT
A study on frequencies of various types of the hypoglossal canal was done on 187 Thai skulls, 123 males and 64 females. Type 1 was the most predominant type, found on either right or left side. Type 2, 3 and 4 appeared less respectively. Type 5 was the lest common type, found in only one skull and on only one side. The comparison with European, Egyptian and American Indian skulls showed the difference in frequencies with statistically significance.
ABSTRACT
An arrangement of subscapularis muscle fibres was investigated in 33 male and 15 female Thai cadavers. The muscle was a sheet showing multipennate arrangement. It consisted of upper pinnate fasciculi interdigitating with lower pinnate fasciculi. Each upper and lower pennate fasciculus had ascending and descending intramuscular tendinous septum in the middle respectively. In addition, some descending tendinous septa bifurcated and the lower pennate fasciculus were subdivided into pair pennate fasciculi. New discovery of the bifurcation of some asconding septa and the upper pair pennate fasciculi was recorded.
ABSTRACT
Morphological features, the size of the preauricular sulcus and the thickness of the ventral sacro-iliac ligament were examined in both male and females Thai cadavers pelves in which the age, the sex and the past history of pregnancy were known. The gross appearance of the preauricular sulcus in males, which was characterized by a short, narrow and shallow groove, of the sulcus in parameters obtained, including the width, depth and length when comparing the left and the right in any individual group of either male or female pelves (p>0.05). There was also no significant difference in the dimensions of the sulsuc and the thickness of the ventral sacro-iliac ligament when comparing between the male and nulliparous female (p>0.05). In contrast, the parameters of both, the size of the sulsuc and the thickness of the ligament in parous females, were significantly greater than that in males and nulliparous females. The results suggest that the size of the preauricular sulcus could be used as a reliable index for indicating the Thai parous female. The thickness of the ventral sacro-iliac ligament may be another index in addition to the size of the preauricular sulcus.
ABSTRACT
A study on the incidence of the lateral costal artery was performed upon 117 Thai cadavers; 69 males and 48 females. The artery was found in 14 cases (11.97%), 11 males and 3 females. Bilateral arteries were observed in 5 cadavers. In 5 cadavers the artery occurred on the right side, and in 4 cases it was seen on the left. Most of the arteries terminated in the second, the third and the fourth intercostal spaces. Only in the case of an 84-year-old male with the bilateral arteries had the right artery end in the seventh intercostals space while the left artery reached to the fifth. All lateral costal arteries rose from the internal thoracic region.