Department of Human Anatomy, Faculty of Biomedical Sciences, Kampala International University Western Campus, Uganda.
Anatomy Unit, Kabale University School of Medicine, Kabale University, Uganda.
Biomed Res Int. 2019 Jul 16;2019:3194912. doi: 10.1155/2019/3194912. eCollection 2019.
Several studies have established a relationship between morphological and behavioral asymmetry making investigations of bilateral bone asymmetry an attractive and important research area. The purpose of this study was to investigate bilateral asymmetry patterns of skeletal specimen from five geographical locations (Rwanda, Burundi, Congo, Kenya, and Uganda) at Galloway Osteological Collection, Department of Anatomy, School of Biomedical Sciences, Makerere University College of Health Sciences. The angle of torsion and retroversion, mid-shaft circumference, length, and weight of 232 pairs of humeri were determined. A Torsiometer was used to measure the angle of torsion in degrees according to Krahl and Evans 1945, a tape was used to measure the mid-shaft circumference at the level of the apex of the deltoid V, and the length in cm was determined. An osteometric board was used to measure the length of the humerus in centimeters. A weighing balance was used to measure the weight of the humerus in grams. The analysis of humeral asymmetry with respect to parameters of the human skeletal specimen at the Galloway Osteological Collection Mulago revealed bilateral asymmetrical status observed in the angle of torsion, length, weight, and mid-shaft circumference. Our result mostly showed lateralization to the right in all the parameters investigated except the torsion angle which is to the left. Our investigation revealed that humeral torsion is inversely proportional to weight, length, and mid-shaft circumference of the humerus. This study established the existence of bilateral asymmetries in the humeri of all the geographical regions investigated with more asymmetry observed in the male compared with the female.
已有多项研究证实了形态和行为的不对称性之间存在关联，这使得对双侧骨骼不对称性的研究成为一个极具吸引力和重要的研究领域。本研究旨在探讨来自五个地理位置（卢旺达、布隆迪、刚果、肯尼亚和乌干达）的骨骼标本的双侧不对称模式，这些标本收藏于马凯雷雷大学健康科学学院生物医学科学系解剖学系的加勒威骨骼收藏馆。本研究采用扭力计按照 1945 年克拉尔和埃文斯的方法测量了扭转角（以度为单位），使用卷尺测量了三角肌 V 顶点处的中段周长，并用厘米尺测量了长度。使用骨骼测量板以厘米为单位测量了肱骨的长度。使用称重天平以克为单位测量了肱骨的重量。对来自马凯雷雷大学加勒威骨骼收藏馆的骨骼标本的各项参数进行的肱骨不对称性分析表明，扭转角、长度、重量和中段周长都存在双侧不对称性。除扭转角外，我们的研究结果表明，所有研究参数均显示出右侧偏侧化，其中扭转角则是左侧偏侧化。我们的研究表明，肱骨扭转与肱骨的重量、长度和中段周长成反比。本研究证实了所有研究地区的肱骨都存在双侧不对称性，而且与女性相比，男性的不对称性更为明显。
