scholarly journals A COMPARATIVE STUDY OF NECK SHAFT ANGLE OF FEMUR IN CENTRAL INDIAN POPULATION

2021 ◽  
pp. 1-3
Author(s):  
Vivek Kumar ◽  
Vivekanand Murlidhar Gajbhiye
Keyword(s):  
Femoral Neck ◽  
Indian Population ◽  
Femoral Shaft ◽  
Mean Value ◽  
Developmental Dysplasia ◽  
Neck Shaft Angle ◽  
Geographical Variations ◽  
Shaft Angle ◽  
The Mean ◽  
The Right

Background: In the fields of forensics, anthropology, orthopaedics, and human kinematics, the thigh bone femur is widely studied. The clinical significance of the femoral neck shaft angle lies in the diagnosis, treatment and monitoring of femoral neck fractures, trochanteric fractures, slipped upper femoral epiphysis, and hip developmental dysplasia. Objective: The present study was conducted to compare the NSA disparity between femurs on both sides and to compare the NSA with the Western and Indian population sizes of different regions. This research therefore leads to Indian data on these parameters. Materials and Methods: A total of 150 (75 right and 75 left) dry femur were used for measuring the neck shaft angle. Unpaired t-test was used to compare right and left femora. Results: The mean value of neck shaft angle was 126.04±5.05°. It ranges between 1130 to 1360. The mean value of right side was 125.92±4.9° and left side was measured 127.43±5.2°. There was no significant correlation between right and left neck shaft angle. Conclusion: The mean left femoral neck shaft angle was higher than the right femoral shaft in the present analysis, but the values were not statistically important. The angle of the neck shaft was lower than most studies in the Western population, but it was similar to most other studies in India. In the Indian population, geographical variations in the angle of the neck shaft also occur. In the field of orthopaedic surgery and anthropometry, this research will be of benefit.

scholarly journals MORPHOMETRY OF NECK-SHAFT ANGLE IN DRIED ADULT HUMAN FEMORA OF NORTH INDIAN POPULATION

2021 ◽  
pp. 135-137
Author(s):  
GURPREET SINGH ◽  
GURSHARAN SINGH DHINDSA
Keyword(s):  
Geometric Modeling ◽  
Indian Population ◽  
Neck Of Femur ◽  
Neck Shaft Angle ◽  
Adult Human ◽  
Prosthetic Implants ◽  
Significant Difference ◽  
Shaft Angle ◽  
The Mean ◽  
The Right

Objectives: The present study aimed to record the femoral-neck shaft angle was carried out which would be of help to the orthopedicians while carrying out surgical repairs around the hip joint especially in fracture of the neck of femur. Materials and Methods: A total of 100 North Indian unpaired dry adult human femora (Right-50, Left-50) of unknown sex were studied. Neck-shaft angle (NSA) of the femur was measured with the help of goniometer and measurements were recorded in degrees. The raw data obtained were statistically analyzed. Range, mean, standard deviation, and standard error of mean were determined. Results: The mean NSA was found to be 127.63°+3.48° (Right=127.80°+3.56° and Left=127.46°+3.42°) with a range of 122°–137° (Right=122°–137° and Left=122°–136°). No significant difference in values of neck-shaft angle was found in the right and left femora. Conclusion: The overall goal of this study was to generate information that would be useful for geometric modeling of femora and collecting data which could prove useful for the development of prosthetic implants

scholarly journals Evaluation of femoral neck shaft angle on plain radiographs and its clinical implications

2016 ◽  
Vol 2 (4) ◽  
pp. 383 ◽  
Author(s):  
Subodh Kumar Pathak ◽  
Pritam Maheshwari ◽  
Prahlad Ughareja ◽  
Daksh Gadi ◽  
Prashanth Raj M. ◽  
...  
Keyword(s):  
Femoral Neck ◽  
Indian Subcontinent ◽  
Slipped Capital Femoral Epiphysis ◽  
Orthopedic Implants ◽  
Developmental Dysplasia ◽  
Neck Of Femur ◽  
Neck Shaft Angle ◽  
Shaft Angle ◽  
The Mean ◽  
Picture Archiving And Communication

<p class="abstract"><strong>Background:</strong> The femoral neck-shaft angle is the measurement of the angle formed between the oblique oriented neck with the vertical shaft and is an important anatomic measurement for the evaluation of biomechanics of hip.<span> The neck shaft angle is important in surgeries that involve the neck of femur, Intertrochanteric fractures, slipped capital femoral epiphysis, and developmental dysplasia of hip. Different variation of neck shaft angle has been seen in different literature and all the orthopedic implants are designed according to the values of the western literature which is different from the Indian subcontinent</span><span lang="EN-IN">.</span></p><p class="abstract"><strong>Methods:</strong> <span>Pelvic radiographs of patients who presented to Accident and emergency care or the outpatient department were used in the study</span> 110 patients radiographs were assessed in the study. There were 55 males and 55 females in our study. The mean age for males was 46.5 years and that for females was 43.2 years. The pelvis radiographs were studied for neck shaft angle .The measurements were performed bilaterally on the digital screen using the PACS (picture archiving and communication system) with handheld 360 degree goniometer.<strong></strong></p><p class="abstract"><strong>Results:</strong> The mean neck shaft angle in our study was129.26 degree for males and 126.62 degree for females .The overall mean neck shaft angle in 110 radiographs was 128.60 degree<span lang="EN-IN">. </span></p><p class="abstract"><strong>Conclusions:</strong> <span lang="EN-IN">We conclude that consideration of neck shaft angles in orthopedics surgery and designing of implant can give more angle options for the surgeons which can improve the overall prognosis of the patient.</span></p>

scholarly journals Sexual Variations of Femoral Neck-Shaft Angle in the Population of Odisha

2021 ◽  
Vol 10 (19) ◽  
pp. 1387-1390
Author(s):  
Rajeev Kumar Kanchan ◽  
Sonali Subhadarsini ◽  
Dharma Niranjan Mishra ◽  
Chinmayi Mohapatra
Keyword(s):  
Femoral Neck ◽  
Ventral Surface ◽  
Cross Sectional Study ◽  
Cross Sectional ◽  
Legal Cases ◽  
Male And Female ◽  
Neck Shaft Angle ◽  
Femur Neck ◽  
Shaft Angle ◽  
The Right

BACKGROUND The peculiar waddling gait of a female attracts most of the anatomists to measure and compare the neck-shaft angle (NSA) of the femora. The femoral neck shaft angle is greater in women due to greater pelvic breadth and shorter femur. Neck-shaft angle was measured by the angle that the neck makes with the shaft of the femur and it is measured on the ventral surface of femur taking the long axis of femoral neck with the long axis of the proximal end of the femur. It gives information about the race it belongs to and normally measures 120° to 140°. The intention of this study was to establish the femoral neck shaft angle variations in adult male and female for medico-legal and anthropometric studies. METHODS This cross-sectional study was conducted on 84 adult human femora of unknown sex in the anatomy department, Sriram Chandra Bhanja (SCB) Medical College, Cuttack, Odisha, from May 2018 to April 2019. We included all the femora which were free of damage or deformity and fully ossified indicating adult bone. Femora with any pathological changes i.e., cortical bone deterioration, extreme osteophyte activity, osteoarthritis and fracture etc. were excluded from the study. The NSA was measured by protractor and goniometer. RESULTS In the present study the NSA range for the right femur of male was 108° - 135° and for the right femur of females 117° - 135°. The left male femur was 118° - 135° and the left female femur was 120° - 135°. The mean neck shaft angle of male femora was 125.9° and the female femora was 125.7°. These measurements show that the values were more in males than the females. The value of the present study was statistically significant between male and female i.e., P < 0.0001. CONCLUSIONS These measurements are important in the medico-legal cases, reconstructive orthopaedic surgeries, hip replacement surgeries and also while constructing suitable prosthesis. This will also be helpful in the detection of sex by anatomists and forensic experts. KEY WORDS Neck Shaft Angle, Medico-Legal, Anthropometry and Goniometer

scholarly journals Three-dimensional morphological study of the proximal femur in Crowe type IV developmental dysplasia of the hip

2021 ◽  
Vol 16 (1) ◽  
Author(s):  
Yuhui Yang ◽  
Weihong Liao ◽  
Weiqun Yi ◽  
Hai Jiang ◽  
Guangtao Fu ◽  
...  
Keyword(s):  
Femoral Neck ◽  
Proximal Femur ◽  
Three Dimensional ◽  
Developmental Dysplasia ◽  
Medullary Canal ◽  
Femoral Offset ◽  
Neck Shaft Angle ◽  
Type Iv ◽  
Shaft Angle ◽  
Dysplasia Of The Hip

Abstract Background When performing femoral reconstruction in patients with Crowe type IV developmental dysplasia of the hip (DDH), anatomical deformity presents many technical challenges to orthopedic surgeons. The false acetabulum is suggested to influence load transmission and femoral development. The aim of this study was to describe the morphological features of dysplastic femurs in Crowe type IV DDH and further evaluate the potential effect of the false acetabulum on morphological features and medullary canal of Crowe type IV femurs. Methods We analyzed preoperative computed tomography scans from 45 patients with 51 hips (25 hips without false acetabulum in the IVa group and 26 hips with false acetabulum in the IVb group) who were diagnosed with Crowe type IV DDH and 30 normal hips in our hospital between January 2009 and January 2019. Three-dimensional reconstruction was performed using Mimics software, and the coronal femoral plane was determined to evaluate the following parameters: dislocation height, dislocation ratio, height of the femoral head (FH), height of the greater trochanter (GT), GT–FH height discrepancy, height of the isthmus, neck-shaft angle, femoral offset and anteversion of the femoral neck. The mediolateral (ML) width, anterolateral (AP) width and diameter of medullary canal of the proximal femur were measured on the axial sections. Further, canal flare index (CFI), metaphyseal-CFI and diaphyseal-CFI were also calculated. Results Compared with the normal femurs, the Crowe type IV DDH femurs had a higher femoral head, larger GT–FH height discrepancy, larger femoral neck anteversion, higher isthmus position and smaller femoral offset. Dislocation height and dislocation rate were significantly larger in the IVa DDH group (65.34 ± 9.83 mm vs. 52.24 ± 11.42 mm). Further, the IVb femurs had a significantly lower isthmus position, larger neck-shaft angle and smaller femoral neck anteversion than IVa femurs. The ML, AP canal widths and the diameter of medullary canal in both DDH groups were significantly smaller than the normal group. Dimensional parameters of IVa femurs were also narrower than IVb femurs in most sections, but with no difference at the level of isthmus. According to the CFIs, the variation of proximal medullary canal in IVb femurs was mainly located in the diaphyseal region, while that in IVa femurs was located in the whole proximal femur. Conclusions High dislocated femurs are associated with more anteverted femoral neck, smaller femoral offset and narrower medullary canal. Without stimulation of the false acetabulum, IVa DDH femurs were associated with higher dislocation and notably narrower medullary canal, whose variation of medullary canal was located in the whole proximal femur.

scholarly journals Valgus Osteotomy Outcome for Treating Femoral Neck Nonunion in Young and Active Patients

2021 ◽  
Vol 8 (2) ◽  
pp. 65-70
Author(s):  
Kaveh Gharanizadeh ◽  
◽  
Hamed Tayyebi ◽  
Abbas Esmaeli ◽  
Maziar Rajei ◽  
...  
Keyword(s):  
Total Hip Arthroplasty ◽  
Femoral Neck ◽  
Hip Arthroplasty ◽  
Limb Length Discrepancy ◽  
Osteotomy Site ◽  
Valgus Osteotomy ◽  
Neck Shaft Angle ◽  
Shaft Angle ◽  
The Mean

Background: Femoral neck fracture nonunion is a frequent and challenging complication, with several surgical options. Objectives: The present study reported the outcome of valgus osteotomy for treating femoral neck nonunion in patients aged <65 years. Methods: This case series research included young patients who underwent valgus osteotomy for treating femoral neck nonunion or device failure of the index surgery. The fixation of the osteotomy site was performed using either a dynamic hip screw or a fixed angle blade. The union of the neck and osteotomy site (subtrochanteric region) was evaluated by monitoring callus formation in the postoperative radiographs. Limb length discrepancy, Pauwels’ angle, and the neck-shaft angle were evaluated before the surgery and at the last follow-up. Postoperative complications were extracted from the explored patients’ profiles. Results: Twenty patients with a Mean±SD age of 27.2±10.8 years were examined in this study‎. The Mean±SD follow-up time of the patients was 6.1±3.9 years. The femoral neck was united in 18 patients in a Mean±SD period of 5.1±2.3 months. The Mean±SD limb length discrepancy was measured as 1.3±0.8 cm before and 0.5±0.7 cm after the ‏osteotomy. The Mean±SD Pauwels’ angle was calculated as 65.5±16.9º before and 32.4±16.2º after the osteotomy. The Mean±SD neck-shaft angle was computed to be 121.9±22.8º before and 144.5±17.7º after the osteotomy. Revision surgery was performed for 6 (30%) patients. This measure included device removal in 4 and total hip arthroplasty in 2 patient. Conclusion: Valgus osteotomy is a safe and efficient technique for managing femoral neck nonunion. Therefore‎, this approach is suggested as a good alternative for total hip arthroplasty, particularly in young and active patients‎.

Cervico-diaphyseal angle of Femur in Southern Punjab: Radiographic Study

2021 ◽  
Vol 15 (8) ◽  
pp. 1979-1982
Author(s):  
M. S Abdullah ◽  
Maimoona Khan ◽  
Humaira Ali ◽  
Abdullah Qamar ◽  
Kishwar Nahid ◽  
...  
Keyword(s):  
Cross Sectional Study ◽  
Mean Value ◽  
Adult Males ◽  
Cross Sectional ◽  
Female Population ◽  
Male And Female ◽  
Neck Shaft Angle ◽  
Shaft Angle ◽  
Genetic And Environmental Factors ◽  
The Right

Background: The cervicodiaphyseal angle of femur varies in different population groups due to genetic and environmental factors and has its clinical implications. Aim: To find the cervicodiaphyseal angle in male and female population of Southern Punjab. Study design: Cross sectional study. Methodology: Two hundred and twelve randomly selected pelvic radiographs of adult males (116) and females (96) of the age 24 to 62 years were included in the study. Cervicodiaphyseal angle was measured on each side and statistical comparisons made. Data analyzed by SPSS 22.0v. Results: The mean value of cervico-diaphyseal angle was found to be130.3+4.9 in the male and127.8+3.5 in the female. The angle was larger in the male and significantly larger on the right side in both male and female subjects. Comparison between the two sides of the male (p <0.0158) and female (p < 0.0424) subjects was found to be significantly larger on the right side. Statistical difference between overall male and female was very highly significant (p < 0.0001). Conclusion: This study provided baseline data on cervicodiaphyseal angle in adult male and female population of Southern Punjab. Keywords: Cervicodiaphyseal angle, collodiaphyseal angle, neck-shaft angle of femur, total hip arthroplasty

scholarly journals Comparing Two Different Automatic Methods to Measure Femoral Neck-Shaft Angle Based on PointNet++ Network

2021 ◽  
Author(s):  
Zhe Li ◽  
Jiayu Yang ◽  
Xinghua Li ◽  
Kunzheng Wang ◽  
Jungang Han ◽  
...  
Keyword(s):  
Femoral Neck ◽  
Femoral Shaft ◽  
Femoral Neck Axis ◽  
Neck Shaft Angle ◽  
3D Space ◽  
Significant Difference ◽  
Shaft Angle ◽  
Automatic Methods ◽  
3D Methods ◽  
2D And 3D

Abstract Bacnground: Accurate measurement of the femoral neck-shaft angle (NSA) is of great significance for diagnosing hip joint diseases and preoperative planning of total hip arthroplasty. However, the fitting lines of the femoral neck and femoral shaft did not always intersect in 3D space. Thus, it is unclear whether there is a difference between 2D and 3D methods for measuring NSA. Methods: The femoral point cloud datasets from 310 subjects were segmented into three regions, including the femoral head, femoral neck, and femoral shaft using PointNet++. We created a projection plane to simulate the hip anteroposterior radiograph and fitted the femoral neck axis and femoral shaft axis to complete the 2D measurement, while we directly fitted the two axes in space to complete the 3D measurement. Also, we conducted the manual measurement of the NSA. We verified the accuracy of the segmentation and compared the results of the two automatic and manual methods. Results: The Dice coefficient of femoral segmentation reached 0.9746, and MIoU of that was 0.9165. No significant difference was found between any two of the three methods. While comparing the 2D and 3D methods, the average accuracy was 98.00%, and the average error was 2.58°. Conclusion: This paper proposed two accurate and automatic methods to measure the NSA based on a 2D plane and a 3D model respectively. Although the femoral neck and femoral shaft axes did not intersect in 3D space, the NSAs obtained by 2D and 3D methods were basically consistent.

scholarly journals Double Intertrochanteric Osteotomy for Trochanteric Overgrowth and a Short Femoral Neck in Adolescents

2016 ◽  
Vol 24 (3) ◽  
pp. 387-391 ◽  
Author(s):  
Turgut Akgul ◽  
Cengiz Şen ◽  
Halil Ibrahim Balci ◽  
Gokhan Polat
Keyword(s):  
Femoral Neck ◽  
Delayed Union ◽  
Developmental Dysplasia ◽  
Intertrochanteric Osteotomy ◽  
Coxa Vara ◽  
Neck Shaft Angle ◽  
Shaft Angle ◽  
Proximal Femoral Focal Deficiency ◽  
Femoral Side

Purpose To review the outcome of Wagner double intertrochanteric osteotomy for trochanteric overgrowth and a short femoral neck in 7 adolescents. Methods Records of one male and 6 females aged 15 to 20 years who underwent modified Wagner osteotomy for trochanteric overgrowth and a short femoral neck by a single senior surgeon were reviewed. The diagnoses were coxa vara (n=2), developmental dysplasia of the hip (n=3), Leg-Calve-Perthes (n=1), and proximal femoral focal deficiency (n=1). Radiological indication for double intertrochanteric osteotomy included a neck-shaft angle (NSA) <120° or a centre trochanter distance (CTD) <28 mm. Function was evaluated using the Children's Hospital Oakland Hip Evaluation Scale (CHOHES). The articulotrochanteric distance (ATD), CTD, NSA, and the distance between the centre of the femoral head and the centre of the acetabulum (MZ) were measured on radiographs. Results The mean follow-up duration was 61 (range, 28–86) months. The ATD improved from 16±11.5 mm to −6.3±10.2 mm (p=0.018), the CTD from 27.9±3.5 mm to 36.4±7.1 mm (p=0.018), the NSA from 112°±24.4° to 131°±16° (p=0.028), the MZ from 12.7±6.5 mm to 7.7±4.2 mm (p=0.028), and the CHOHES score from 62.1±8.7 to 84±9.6 (p=0.017). One patient had delayed union. Two patients had persistent Trendelenburg gait. Two patients declined second-stage surgery for acetabular dysplasia after solving the femoral side problems at the first stage. One of them developed hip arthrosis. Conclusion Double intertrochanteric osteotomy is a viable treatment option for adolescents with trochanteric overgrowth and a short femoral neck.

scholarly journals The Modified Femoral Neck-Shaft Angle: Age- and Sex-Dependent Reference Values and Reliability Analysis

2016 ◽  
Vol 2016 ◽  
pp. 1-7 ◽  
Author(s):  
Christoph Kolja Boese ◽  
Michael Frink ◽  
Janine Jostmeier ◽  
Stefan Haneder ◽  
Jens Dargel ◽  
...  
Keyword(s):  
Femoral Neck ◽  
Reference Values ◽  
Interrater Reliability ◽  
High Reliability ◽  
Age Groups ◽  
Absolute Difference ◽  
Neck Shaft Angle ◽  
Shaft Angle ◽  
The Mean ◽  
Novel Concept

Background. The femoral neck-shaft angle (NSA) is of high importance for the diagnostics and treatment of various conditions of the hip. However, rotational effects limit its precision and applicability using plain radiographs. This study introduces a novel method to measure the femoral NSA: the modified NSA (mNSA), possibly being less susceptible against rotational effects compared to the conventional NSA.Patients and Methods. The method of measurement is described and its applicability was tested in 400 pelvis computed tomography scans (800 hips). Age- and gender-dependent reference values are given and intra- and interrater reliability are analyzed.Results. The mean age of all 400 patients (800 hips) was 54.32 years (18–100, SD 22.05 years). The mean mNSA was 147.0° and the 95% confidence interval was 146.7°–147.4°. Differences of the mNSA between sexes, age groups, and sides were nonsignificant. The absolute difference between NSA and mNSA was 16.3° (range 3–31°; SD 4.4°); the correlation was high (0.738;p<0.001). Overall, the intra- and interrater reliability were excellent for the mNSA.Interpretation. We introduced a novel concept for the analysis of the neck-shaft angle. The high reliability of the measurement has been proven and its robustness to hip rotation was demonstrated.

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