C Shivaleela, B S Suresh, G V Kumar, S Lakshmiprabha
Assistant Professor, Department of Anatomy, Sri Siddhartha Medical College , Tumkur-572117, Karnataka, India .
Associate Professor, Department of Anatomy, Sri Siddhartha Medical College , Tumkur-572117, Karnataka, India .
J Clin Diagn Res. 2014 Jan;8(1):1-3. doi: 10.7860/JCDR/2014/6743.3915. Epub 2014 Jan 12.
The supracondylar process of the humerus, which is also called the supra-epitrochlear, epicondylar, epicondylic process or a supratrochlear spur, is a hook-like, bony spine of variable size that may project distally from the anteromedial surface of the humerus. It represents the embryologic vestigial remnant of climbing animals and seen in many reptiles, most marsupials, cats, lemurs and American monkeys.
Two hundred and forty dried humeri were studied from department of Anatomy, Sri Siddhartha Medical College, Tumkur, Karnataka, India. The bones were examined for supracondylar process. On finding, the dimensions were recorded and photographed.
Out of 240 dried humeri examined we found only 1 humerus of the left side with an osseous spine on the anteromedial surface. The incidence calculated in this study was 0.41%.
The supracondylar process is frequently misjudged as a pathological condition of the bone rather than as a normal anatomical variation. Though, this process has been of more interest to anatomists and anthropologists because of a possible link to the origins and relations of the human races than to clinicians, many of whom are not aware of its occasional presence. It is usually clinically silent, but may become symptomatic by presenting as a mass or can be associated with symptoms of median nerve compression and claudication of the brachial artery.
肱骨髁上突，也被称为上髁上、髁上、髁状突或滑车上方骨刺，是一个大小不一的钩状骨质棘突，可能从肱骨的前内侧表面向远端突出。它代表了攀缘动物的胚胎残留遗迹，在许多爬行动物、大多数有袋动物、猫、狐猴和美洲猴中都可见到。
对印度卡纳塔克邦图姆库尔市斯里·悉达多医学院解剖学系的240根干燥肱骨进行了研究。检查这些骨头是否有髁上突。发现后，记录其尺寸并拍照。
在检查的240根干燥肱骨中，仅发现1根左侧肱骨的前内侧表面有骨质棘突。本研究计算出的发生率为0.41%。
肱骨髁上突常被误诊为骨骼的病理状况，而非正常的解剖变异。尽管由于其可能与人类种族的起源和关系有关，这个结构对解剖学家和人类学家更具吸引力，而非临床医生，许多临床医生甚至都不知道它偶尔会出现。它通常在临床上无症状，但可能会因出现肿块而产生症状，或者与正中神经受压和肱动脉跛行的症状相关。
