Original Research Article
Year: 2016 | Month: November | Volume: 6 | Issue: 11 | Pages: 100-102
Study of Neck-Shaft Angle in Adult Dried Femora
Neelima P1*, R Ravi Sunder1**, A. Himabindu2*
1Associate Professor, 2Professor & HOD,
*Department of Anatomy, GIMSR, Visakhapatnam. **Department of Physiology, GIMSR, Visakhapatnam.
Corresponding Author: R Ravi Sunder
ABSTRACT
Background: The neck-shaft angle of femur is a crucial factor in the biomechanics of gait. Femoral ante version and the neck-shaft angle variations probably are the etiologic factors in various types of femoral neck fractures.
Aims and Objectives: To measure the neck-shaft angle of dried femora and to compare with other studies.
Materials and Methods: The numbers of femora collected from the department were 60.The neck shaft angle was obtained by drawing the femoral contour on a paper. A point on the centre of maximum diameter of head of femur was marked. Another point was kept on the centre of minimum diameter of the neck. The two lines were joined to form the axis of neck of femur. Two points each on upper and lower ends of the shaft were joined by a line to form the axis of the shaft. These two lines were extended to intersect each other at an angle, the neck shaft angle. This was measured by a protractor.
Results: Out of the 60 femora, 33 belonged to right side and remaining 27 were from left. The maximum angle from the study was 140 degrees and the minimum was 112 degrees. The mean value was 126.28 degrees with a standard deviation of 6.556. P value was calculated using chi square and it was not significant statistically.
Conclusion: The mean value of neck-shaft angle of femur was 126.28 degrees with a p value not significant statistically. The study can be widened by increasing the number of femora to find any variation.
Key words: Femora, neck-shaft angle, axis of shaft, axis of neck, p value.