Kumar Sanjay, Sinha Sanjeev Kumar, Akhtar Md Jawed, Kumar Binod, Sinha Rajiv Ranjan, Kumar Avanish
Department of Anatomy, Indira Gandhi Institute of Medical Sciences, Patna, IND.
Department of Anatomy, Narayan Medical College, Sasaram, IND.
Cureus. 2022 Dec 23;14(12):e32856. doi: 10.7759/cureus.32856. eCollection 2022 Dec.
Fracture or surgical intervention of fracture of the shaft of the humerus may cause injury to the nutrient artery leading to the nonunion or delayed union of the fracture. It is important to find the number and location of the nutrient artery. So the knowledge regarding the nutrient foramen helps to protect them during any operative procedure of the shaft of the humerus. The main objective of this study is to find out the number, location, and direction of the nutrient foramen of the humerus.
The study was conducted on 80 dried humeri of unknown gender obtained from Narayan Medical College, Sasaram, Bihar, India, and also from other medical colleges of Bihar. The number, location, and direction of nutrient foramen were observed.
The majority of humeri showed one nutrient foramen, which was found in 91.25%, followed by 3.75% with double foramen and 1.25% with triple foramen. Nutrient foramen was absent in 3.75% of the humerus. The majority (89.02%) of nutrient foramen was found on the anteromedial surface followed by anterolateral (9.76%) and posterior surface (1.22%). The majority of nutrient foramen was found on the middle third (86.58%) of the shaft, followed by 13.42% on the distal third. No nutrient foramen was found on the proximal third of the humerus. All nutrient foramina were directed downward.
The location of the nutrient foramen of the humerus was not constant; it may present on anteromedial, anterolateral, or posterior surfaces. Similarly, it may present on the middle or distal third of the shaft of the humerus. This study will help surgeons planning the surgical intervention of the shaft of the humerus, which will possibly reduce the chances of nonunion or delayed union.
肱骨干骨折或手术干预可能会损伤滋养动脉，导致骨折不愈合或延迟愈合。了解滋养动脉的数量和位置很重要。因此，有关滋养孔的知识有助于在肱骨干的任何手术过程中保护它们。本研究的主要目的是找出肱骨滋养孔的数量、位置和方向。
本研究对80根来自印度比哈尔邦萨萨拉姆纳拉扬医学院以及比哈尔邦其他医学院的性别未知的干燥肱骨进行。观察滋养孔的数量、位置和方向。
大多数肱骨有一个滋养孔，占91.25%，其次是3.75%有双孔，1.25%有三孔。3.75%的肱骨没有滋养孔。大多数（89.02%）滋养孔位于前内侧表面，其次是前外侧（9.76%）和后表面（1.22%）。大多数滋养孔位于骨干的中三分之一（86.58%），其次是远三分之一的13.42%。肱骨近三分之一没有滋养孔。所有滋养孔都向下。
肱骨滋养孔的位置不固定；它可能出现在前内侧、前外侧或后表面。同样，它可能出现在肱骨干的中三分之一或远三分之一处。本研究将有助于外科医生规划肱骨干的手术干预，这可能会减少不愈合或延迟愈合的几率。
