Measurement of Neck-Shaft Angle Using CT Scout View in Healthy Jordanian Adults - A Reliability and Agreement Study

Altubasi, Ibrahim; Hamzeh, Hayat; Madi, Mohammad

doi:10.9734/jammr/2020/v32i1630624

Cited by 3 publications

(2 citation statements)

References 24 publications

(37 reference statements)

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“…A multi-national analysis of 8271 femora found that human neck-shaft angles varied from 120° to 140°, with a mean of 126.4° [7]. A recent study showed a mean value of 131.3° [8]. These values are subject to a wide range of discrepancies, as it was demonstrated that age varies inversely with the angle [9].…”

Section: Introductionmentioning

confidence: 99%

Photogrammetric Evaluation of Proximal Femoral Morphometric Parameters of Southern Nigerians

Bob-Manuel

2023

AJARR

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Background: Understanding the dimensions of the structural configuration of human skeleton is requisite in anthropologic and forensic anatomy, radiologic anatomy and orthopaedics. Aim: This study presents a new method of using photogrammetry to obtain and analyse data of the morphometric parameters of the neck, proximal shaft (intertrochanteric or epiphyses area) of the proximal aspect of the cadaveric femur. Methodology: A total of 127 dry human femur bones studied and analysed critically using photogrammetry. The following parameters were calculated for each femur: femoral neck shaft angle (FNSA), femoral neck intertrochanteric angle (FNIA), femoral shaft intertrochanteric angle (FSIA), and the area of femoral intertrochanteric triangle (FITAREA). Results: The mean gotten for measured parameters are FNSA=132.91, FNIA=96.50, FSIA=35.93, FITAREA = 59.38mm2. Statistical analysis of the obtained data showed no significant (p<0.01) differences in all measured parameters between right and left sides. From the outcome of this study, highly significant (p<0.01) positive correlation between FNSA and FSIA, and FSIA and FNIA was observed. Conclusion: We conclude that dynamic and robust understanding of the geometry and strength of the proximal end of the os femora requires parameters that conform to anatomical facts between the head, neck and proximal shaft of the os femora. This advocate how useful the FNIA and FSIA would be when used together with the FNSA in prognosis and managing proximal femoral fractures as it defines the geometric relation between the neck, intertrochanteric area (proximal epiphyseal area) and the shaft of femur. FITAREA which depicts the strength of the femoral epiphyseal or intertrochanteric area would also be useful in this regard. We recommend the possible use of the parameters measured in this study to improve prediction and management of proximal femoral fractures as they better elucidate an understanding of the morphology and strength of the proximal extremity of the os femora.

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Section: Introductionmentioning

confidence: 99%

Photogrammetric Evaluation of Proximal Femoral Morphometric Parameters of Southern Nigerians

Bob-Manuel

2023

AJARR

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“…A multi-national analysis of 8271 femora found that human neck-shaft angles varied from 120° to 140°, with a mean of 126.4° [ 10 ]. A recent study showed a mean value of 131.3° [ 11 ]. These values are subject to a wide range of discrepancies, as it was demonstrated that age varies inversely with the angle [ 12 ].…”

Section: Introductionmentioning

confidence: 99%

Femoral neck shaft angle measurement on plain radiography: is standing or supine radiograph a reliable template for the contralateral femur?

Haddad

Hamdan²,

Nawaiseh³

et al. 2022

BMC Musculoskelet Disord

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Introduction Neck-shaft angle (NSA) is of paramount importance to orthopedic surgeons due to its implications for various pathologies of the hip and femur. The primary aim of the study was to establish if NSA measurement may be affected by imaging position (standing and supine) and provide evidence regarding whether the contralateral NSA can be used as a template. The secondary aim was to determine a reference value and precisely understand the effects of sex on NSA measurement. Materials and methods We measured bilateral NSA in a retrospective study of 200 standing and 200 supine anteroposterior pelvis radiographs that met the inclusion criteria, while paying special attention to bilateral hip symmetry. The overall inter-rater reliability was 0.688 (CI 0.128–0.851). Matching was performed according to sex (exact matching) and age. Paired t-test, Pearson correlation coefficient, and independent sample t-test were used (p < 0.01). Results A total of 400 pairs of femoral necks were reviewed, comprising of 200 males and 200 females. In the upright radiograph, the overall mean NSA was 131.21° ± 4.72°. There was no significant difference between right and left femur NSA among the patients (p = 0.95). On both sides, male NSA was higher than female NSA (p < 0.001). In supine radiograph, the overall mean NSA for the supine position was 133.06° ± 5.71°. There was a significant difference between NSA of the right and left femur among the patients in the supine position (p < 0.001). On supine radiographs there was no statistically significant difference between male and female NSA (p = 0.85). Conclusion Our findings indicated no significant variability in upright radiographs between the right and left NSA. In contrast, significant asymmetry between the right and left NSA was found in the supine radiographs. However, this study does not provide definitive clinical evidence, and further clinical-oriented research is required. Level of evidence Level III; retrospective comparative study.

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Computed tomography reference values estimation for femoral neck shaft angle in Egyptian healthy adults of both sexes

Ahmad

Bushra

Galal

et al. 2023

Egypt J Radiol Nucl Med

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Background Accurate measurement of the femoral neck shaft angle (NSA) is critical for the diagnosis and treatment of hip pathology, but its current reference values remain limited in the Egyptian adult population. This study was designed to provide reference that is reliable for femoral NSA measured by computed tomography (CT) in Egyptian healthy adults of both sexes. This was a cross-sectional descriptive study and analysis of the femoral NSA of healthy Egyptian adults of both sexes measured by CT. Six hundred hips in 300 adults (aged 18 and 60 years; 300 females) were evaluated in the simulated anterior pelvic plane (APP) and the rotation-corrected coronal reconstruction femoral neck plane (FNP) on both sides. We compared the measurements with age and sex, and a two-tailed nonparametric Wilcoxon test was used to discover differences between both measurements. Results The mean NSA was 129.46° ± 5.06°, with a mean value of 129.65° ± 4.13° for males and 129.28° ± 3.71° for females. Simulated APP had a higher mean NSA 129.6° (range 115.7°–146.7°; SD 5.06°) than rotation-corrected coronal reconstruction in the FNP 127.73° (range 115.3°–144.6°; SD 4.9°). It was observed that there was a significant variation in the measurements of NSA between the two methods. The side influenced the NSA significantly on both views (p < 0.001); no significant differences were found between age and gender. Conclusions The current study attempts to develop population-specific data for femoral NSA reference values in Egyptian communities. No considerable difference was measured in NSA among males and females. It was observed that there was a side difference, with the NSA value being higher on the left than the right. We noted also that proper measurement of NSA is made possible by using NSA values obtained from rotation-corrected coronal reconstruction in the FNP. We anticipate that the findings will contribute to a better understanding of proximal femur morphology and may aid the majority of our population in selecting an implant that is compatible with hip anatomy.

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Measurement of Neck-Shaft Angle Using CT Scout View in Healthy Jordanian Adults - A Reliability and Agreement Study

Cited by 3 publications

References 24 publications

Photogrammetric Evaluation of Proximal Femoral Morphometric Parameters of Southern Nigerians

Photogrammetric Evaluation of Proximal Femoral Morphometric Parameters of Southern Nigerians

Femoral neck shaft angle measurement on plain radiography: is standing or supine radiograph a reliable template for the contralateral femur?

Computed tomography reference values estimation for femoral neck shaft angle in Egyptian healthy adults of both sexes

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