scholarly journals Is the femoral neck-shaft angle an independent risk factor for hip fractures? An observational study

2019 ◽  
Vol 5 (6) ◽  
pp. 1032
Author(s):  
Bernard O. Obande ◽  
Emmanuel C. Iyidobi ◽  
Gabriel O. Eyichukwu ◽  
Cajetan U. Nwadinigwe ◽  
Remigus T. Ekwunife ◽  
...  
Keyword(s):  
Hip Fracture ◽  
Femoral Neck ◽  
Hip Fractures ◽  
Predictor Variable ◽  
Outcome Variable ◽  
Control Group ◽  
Neck Shaft Angle ◽  
Increased Risk ◽  
Shaft Angle ◽  
The Mean

<p class="abstract"><strong>Background:</strong> The femoral neck-shaft angle (FNSA) has been implicated in the aetiology of hip fractures. The longer moment arm of a higher FNSA has been theorized to impart a greater deforming force to the greater trochanter, which may cause a hip fracture.</p><p class="abstract"><strong>Methods:</strong> A prospective study that involves adults with hip fractures and a control group matched for age and sex. The FNSA of both groups were measured on an anteroposterior X-ray of the pelvis. The mean FNSA were compared with a paired samples t-test, and a binary logistic regression analysis was run with the FNSA as a predictor variable and the presence of hip fracture as an outcome variable.<strong></strong></p><p class="abstract"><strong>Results:</strong> A total of 150 patients were recruited for the study, 75 per group. The mean age of patients with hip fractures was 71.30 years (S.D.=14.34), and that of the control group was 73.94 years (S.D.=12.55), p=0.264. The mean FNSA of the study group was 133.96<sup>o</sup> (S.D.=3.77) while that of the control group was 131.05<sup>o</sup> (S.D.=3.86), p&lt;0.001. Increasing FNSA imparts a higher risk of having a hip fracture, O.R.=1.24 (95% C.I, 1.12-1.37).</p><p><strong>Conclusions:</strong> Individuals with higher FNSA demonstrated a significantly increased risk of developing hip fractures. However, the exact cut-off point of the FNSA, which predisposes to the risk of these fractures, remains to be elucidated. </p>

scholarly journals Femoral Neck Shaft Angle in Men with Fragility Fractures

2011 ◽  
Vol 2011 ◽  
pp. 1-7 ◽  
Author(s):  
S. P. Tuck ◽  
D. J. Rawlings ◽  
A. C. Scane ◽  
I. Pande ◽  
G. D. Summers ◽  
...  
Keyword(s):  
Hip Fracture ◽  
Femoral Neck ◽  
Fracture Risk ◽  
Hip Fractures ◽  
Distal Forearm ◽  
Neck Shaft Angle ◽  
Hip Fracture Risk ◽  
Significant Difference ◽  
Shaft Angle ◽  
Combined Data

Introduction. Femoral neck shaft angle (NSA) has been reported to be an independent predictor of hip fracture risk in men. We aimed to assess the role of NSA in UK men.Methods. The NSA was measured manually from the DXA scan printout in men with hip (62, 31 femoral neck and 31 trochanteric), symptomatic vertebral (91), and distal forearm (67) fractures and 389 age-matched control subjects. Age, height, weight, and BMD (g/cm2: lumbar spine, femoral neck, and total femur) measurements were performed.Results. There was no significant difference in mean NSA between men with femoral neck and trochanteric hip fractures, so all further analyses of hip fractures utilised the combined data. There was no difference in NSA between those with hip fractures and those without (either using the combined data or analysing trochanteric and femoral neck shaft fractures separately), nor between fracture subjects as a whole and controls. Mean NSA was smaller in those with vertebral fractures (129.2°versus 131°:P=0.001), but larger in those with distal forearm fractures (129.8°versus 128.5°:P=0.01).Conclusions. The conflicting results suggest that femoral NSA is not an important determinant of hip fracture risk in UK men.

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.

Morphometric study of proximal femur in fractured and non-fractured post menopausal women

2017 ◽  
Vol 10 (4) ◽  
pp. 313
Author(s):  
Lopamudra Nayak ◽  
Susmita Senapati ◽  
Sitanshu Kumar Panda ◽  
Prafulla Kumar Chinara
Keyword(s):  
Femoral Neck ◽  
Proximal Femur ◽  
Morphometric Study ◽  
Control Group ◽  
Head Width ◽  
Femoral Neck Axis ◽  
Neck Shaft Angle ◽  
The Mean ◽  
Axis Length ◽  
And Control

Objective: This study was conducted to investigate the risk of hip fracture using proximal femoral morphometry in fractured and nonfractured postmenopausal women.Methods: We conducted an observational cross-sectional study with 138 postmenopausal women (49 fractured and 89 nonfractured). The hip axis length (HAL), femoral neck axis length (FNAL), acetabular width (AW), femoral head width (FHW), femoral shaft width (FSW), and femoral neck shaft angle (FNSA) were measured in all cases by dual energy X-ray absorptiometry. We also studied the correlation between body mass index (BMI) with all the parameters in fractured and control groups.Results: The mean age, height, weight, and BMI were 61.24±3.23, 163.94±7.84 cm, 71.88±9.14 kg, and 26.72±2.78 kg/m², respectively, in fractured patients. In nonfractured patients the values were 59.73±5.32, 161.73±4.25 cm, 69.54±6.25 kg, and 26.74±2.23 kg/m² respectively. The mean HAL, FNAL, AW, FHW, FSW, and FNSA were 130.5±3.18 mm, 111.26±3.64 mm, 18.2±1.91 mm, 53.46±1.51 mm, 37.45±1.82 mm, and 132.76±3.15 degree incase group and 130.84±4.74 mm, 112.48±4.08 mm, 17.57±2.32 mm, 53.4±1.86 mm, 35.29±1.82 mm, and 128.76±3.6° in control group, respectively.Conclusion: The femoral parameters such as HAL, FNAL, AW, and FHW do not indicate any correlation between fractured and control groups, whereas FSW and FNSA were significantly higher in case group. The FNSA was having significant negative correlation with BMI in fractured group while that was having a significant positive correlation in the nonfractured group. This observation will be helpful in exploration of its clinical significance in proximal femoral fracture.Keywords: Proximal femur, Morphometry, Postmenopausal, Fracture.

Femoral Bone Mineral Density, Neck-Shaft Angle and Mean Femoral Neck Width as Predictors of Hip Fracture in Men and Women

2000 ◽  
Vol 11 (8) ◽  
pp. 714-720 ◽  
Author(s):  
C. Gómez Alonso ◽  
M. Díaz Curiel ◽  
F. Hawkins Carranza ◽  
R. Pérez Cano ◽  
A. Díez Pérez
Keyword(s):  
Bone Mineral Density ◽  
Hip Fracture ◽  
Femoral Neck ◽  
Femoral Bone ◽  
Mineral Density ◽  
Femoral Bone Mineral Density ◽  
Men And Women ◽  
Neck Shaft Angle ◽  
Femoral Neck Width ◽  
Shaft Angle

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.

scholarly journals AGE AND GENDER DIFFERENCES IN MODIFIED FEMORAL NECK-SHAFT ANGLE: AN MRI BASED OBSERVATIONAL STUDY

2020 ◽  
pp. 1-4
Author(s):  
Najamul Huda ◽  
Ankur Agarawal* ◽  
Man Mohan Sharma ◽  
Saurabh Agarwal
Keyword(s):  
Femoral Neck ◽  
Age Group ◽  
Age And Gender ◽  
Neck Shaft Angle ◽  
Mri Scans ◽  
Shaft Angle ◽  
The Mean ◽  
The Difference ◽  
Gender Based ◽  
And Gender

Background: Femoral neck-shaft angle has its importance in describing biomechanics of hip. Measurement methods like plain radiography and CT scans have its limitations. The modied neck-shaft angle (mNSA) drawn on MRI scans is less susceptible to rotational effects and is more reliable for getting normal values. The present study was undertaken to assess the neck shaft angle on MRI and establish differences according to age and gender. Methods: Total 200 adults were recruited and equally distributed under four study cohorts according to age and gender. MRI of hip joint was analysed and mNSA was measured using pre-dened axial lines and landmarks. Results: The mean age of the participants was 49.76±18.184 years (18 to 87 years). The mean mNSA was 147.855o. Males had signicantly higher mean mNSA (149.93±6.61)o than females (145.78±5.71)o. Though the younger age group (<60 years) had higher mNSA values (148.32±6.65) than older (> 60years) age group (147.3900±6.35), the difference was not statistically signicant. Conclusions: We conclude that gender-based variation exists in the population with the higher values of mNSAin males as compared to females in any age group. The age based difference is also present, but it is not signicant. Neck shaft angle calculated on the MRI has the advantage that it is unaffected by rotation of the hip and is radiation free. The orthopaedic surgeons can use the mNSAfor the diagnosis and planning surgeries around hip, for designing implants and prosthesis. It can also be of help for the forensic anthropologists and to the anatomists. Multicentric studies may be undertaken to include a larger population.

scholarly journals Assessment of Femoral Neck-shaft Angle on Plain X-rays and its Clinical Implications

2021 ◽  
pp. 841-844
Author(s):  
N. Adhishwar Kumaran ◽  
B. Jagadeesh ◽  
Ashok Kumar ◽  
K. P. Niveditha
Keyword(s):  
Femoral Neck ◽  
Neuromuscular Disorders ◽  
Local Population ◽  
Tertiary Care ◽  
X Rays ◽  
College Hospital ◽  
Cross Sectional ◽  
Neck Shaft Angle ◽  
Shaft Angle ◽  
The Mean

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.

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.

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