Abstract
Background: Femoral neck-shaft angle is an important parameter for evaluating the biomechanics of the hip joint. It plays a pivotal role in surgeries for developmental dysplasia of the hip, neuromuscular disorders of the lower limb, proximal femoral fractures, Total Hip Arthroplasty, Perthes disease etc., It is also considered to hold an extensive bearing while designing orthopaedic implants.
 Aim: This study aimed to evaluate the femoral neck-shaft angle of proximal femur on plain radiographs of our local population
 Study Design: Retrospective study
 Methods: This cross-sectional study was done at Saveetha medical college hospital, a tertiary care institute in Chennai. 50 pelvic X-rays of patients aged between 30 to 70 who presented to the outpatient or emergency care department were used in the study. Using a goniometer the femoral neck shaft angle was measured in the plain X - ray.
 Results: The mean age of the population in our study was 47.12. And the mean femoral neck shaft was 132.6 in males and 124.9 in females.
Highlights
The femoral neck-shaft angle (FNSA) is one of the most frequently applied anatomical measurement for the evaluation of hip biomechanics [1]
; the neck shaft angle differs and it tends to be smaller in females because of broad pelvis leading to a greater inclination of the femoral shaft
This study is aimed at evaluating the femoral neck-shaft angle of proximal femur on plain radiographs which would provide anthropological and biomechanical data beneficial for designing implants and other orthopaedical equipment
Summary
The femoral neck-shaft angle (FNSA) is one of the most frequently applied anatomical measurement for the evaluation of hip biomechanics [1]. When it is less than 120°; it is known as coxa vara; and when greater than 140°; it is coxa valga [3] This angle plays a pivotal role in the diagnostic and restorative planning of patients with various hip and femur pathologies including developmental dysplasia of the hip; neuromuscular disorders of the lower limb; proximal femoral fractures; total Hip arthroplasty; Perthes disease etc. Femoral neck-shaft angle is an important parameter for evaluating the biomechanics of the hip joint It plays a pivotal role in surgeries for developmental dysplasia of the hip, neuromuscular disorders of the lower limb, proximal femoral fractures, Total Hip Arthroplasty, Perthes disease etc., It is considered to hold an extensive bearing while designing orthopaedic implants. The mean femoral neck shaft was 132.6 in males and 124.9 in females
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