Shrestha R, Gupta H K, Hamal R R, Pandit R
Department of Anatomy, Kantipur Dental College, Basundhara, Kathmandu, Nepal.
Department of Orthopedics, College of Medical Sciences, Bharatpur, Chitwan, Nepal.
Kathmandu Univ Med J (KUMJ). 2018 Apr-Jun;16(62):124-128.
Background Neck-shaft angle (NSA) is one of the prominent features in the proximal femur which is an important determinant of fracture of femoral neck. Present study evaluating the value of neck-shaft angle has relied heavily on radiographs. As knowledge of neck-shaft angle is important to orthopaedic surgeons, there is need to elucidate whether there is significant variation of this angle among the two different genders and various age groups of both right and left femora of Nepalese population. Objective To ascertain the value of neck-shaft angle in the Nepalese population by means of a radiographic study and to correlate the values with regard to right neck-shaft angle/ left neck-shaft angle side (RNSA/LNSA), gender and three different age group. Method Normal pelvic radiographs of 148 patients seen at department of orthopedic and radiology, College of Medical Sciences- Teaching Hospital (COMS-TH), Bharatpur, Chitwan from the month of February 2017 to June 2017 were divided into two different gender and three different age groups (21-40 years, 41-60 years and Above 60 years) and their neck-shaft angle of both right and left sides were recorded. Result The average of RNSA and LNSA were found to be 132.96±6.05° and 131.54±13.66° respectively for male and 134±6.57° and 132.98±6.23° respectively for female. In total the average RNSA and LNSA were 133.51±6.32° and 132.26±10.61° respectively. Similarly, the average RNSA and LNSA for three different age groups (21-40 years, 41-60 years and Above 60 years) were found to be 133.76±6.44°, 133.69±6.36° and 132.50±6.06° and the 133.35±6.29°, 132.47±5.85° and 128.84±21.98° respectively. Conclusion The average neck-shaft angle recorded here shows no significant difference in both RNSA and LNSA in males except for a small and significant difference in LNSA in female of three different age groups.
颈干角（NSA）是股骨近端的一个显著特征，是股骨颈骨折的重要决定因素。目前评估颈干角价值的研究严重依赖于X线片。由于颈干角的知识对骨科医生很重要，因此有必要阐明尼泊尔人群中不同性别以及左右股骨不同年龄组之间该角度是否存在显著差异。
通过影像学研究确定尼泊尔人群中颈干角的值，并将这些值与右颈干角/左颈干角（RNSA/LNSA）、性别和三个不同年龄组相关联。
将2017年2月至2017年6月在巴拉特普尔恰尔托普尔医学科学学院教学医院（COMS-TH）骨科和放射科就诊的148例患者的正常骨盆X线片分为两个不同性别和三个不同年龄组（21 - 40岁、41 - 60岁和60岁以上），记录其左右两侧的颈干角。
男性的RNSA和LNSA平均值分别为132.96±6.05°和131.54±13.66°，女性分别为134±6.57°和132.98±6.23°。总体而言，RNSA和LNSA的平均值分别为133.51±6.32°和132.26±10.61°。同样，三个不同年龄组（21 - 40岁、41 - 60岁和60岁以上）的RNSA和LNSA平均值分别为133.76±6.44°、133.69±6.36°和132.50±6.06°，以及133.35±6.29°、132.47±5.85°和128.84±21.98°。
此处记录的平均颈干角显示，男性的RNSA和LNSA均无显著差异，除了三个不同年龄组女性的LNSA存在微小但显著的差异。
