ArticleSkeletal radiology2016
The neck shaft angle: CT reference values of 800 adult hips.
Article in Skeletal radiology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers.
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Who cites it
27 citing papers in PubMed, 60 citations in OpenAlex.
- The Distribution of Caput-Collum-Diaphyseal (CCD) Angles in the Iranian Elderly Population: Implications for Proximal Femoral Nail Design.The archives of bone and joint surgery · 2026Article
- Accuracy of femoral head center reconstruction using a straight cementless rectangular stem: AnJournal of orthopaedics · 2025Article
- No proportional relationship between shape and size of the femoral canal and the external proximal femur morphology in elderly patients.Journal of orthopaedics · 2025Article
- Identification of Essential Features in Developing a Novel Femoral Stem Reflecting Anatomical Features of East Asian Population: A Morphological Study.Journal of clinical medicine · 2024Article
- Femurs in patients with hip dysplasia have fundamental shape differences compared with cam femoroacetabular impingement.Journal of hip preservation surgery · 2024Article
- A framework of biomarkers for skeletal aging: a consensus statement by the Aging Biomarker Consortium.Life medicine · 2023Article
- Virtual 3D femur model to assess femoral version: comparison to the 2D axial slice approach.Pediatric radiology · 2023Article
- Digital measurement and clinical significance of proximal femur in the older people of Inner Mongolia population, China.BMC geriatrics · 2023Article
- Bi-planar calibration method for templating of hip joint arthroplasty: phantom study and proof of concept.International orthopaedics · 2023Article
- Revision surgery in a middle-aged patient with pertrochanteric fracture nonunion due to wedge effect caused by cephalomedullary nail: A case report.Trauma case reports · 2023Article
- Comparison of single taper and dual taper versions of the same stem design in total hip arthroplasty for primary osteoarthritis.Journal of orthopaedics and traumatology : official journal of the Italian Society of Orthopaedics and Traumatology · 2023Article
- Age and Sex Influence the Use of Modular Femoral Components in Total Hip Arthroplasty Performed for Primary Osteoarthritis.Journal of clinical medicine · 2023Article
- Femoral neck shaft angle measurement on plain radiography: is standing or supine radiograph a reliable template for the contralateral femur?BMC musculoskeletal disorders · 2022Article
- Coxa valga and antetorta increases differences among different femoral version measurements : potential implications for derotational femoral osteotomy planning.Bone & joint open · 2022Article
- Age-Associated Changes in Proximal Femur Morphology Affect Femoral Component Sizing in Cementless Hip Arthroplasty.Geriatric orthopaedic surgery & rehabilitation · 2022Article
- Proximal femur anatomy-implant geometry discrepancies.SICOT-J · 2022Article
- The Lisbon Agreement on femoroacetabular impingement imaging-part 2: general issues, parameters, and reporting.European radiology · 2021Article
- Evaluation of proximal femoral geometry and its relationship with body mass index in Iranian people: a cross sectional study.International journal of burns and trauma · 2021Article
- The neck-shaft angle: an update on reference values and associated factors.Acta orthopaedica · 2020Article
- Surgical hip dislocation and varus derotation osteotomy for extra-articular cause of femoroacetabular impingement: a single case report.Journal of hip preservation surgery · 2020Article
Corrections and comments
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Authors and funding
7 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectiveA precise understanding of the radiological anatomy and biomechanics as well as reliable reference values of the hip are essential. The primary goal of this study was to provide reference values of the neck-shaft angle (NSA) for adult patients based on the analysis of rotation corrected computed tomography (CT) scans of 800 hips. The secondary aim was to compare these measurements with simulated anteroposterior roentgenograms of the pelvis. MATERIALS AND
methodsPelvic CT scans of 400 patients (54.3 years, range 18-100 years; 200 female) were reconstructed in the derotated coronal plane of the proximal femur and as CT-based simulated anteroposterior roentgenograms of the pelvis in the anterior pelvic plane. Femora were categorized as coxa vara (<120°), physiologic (≥120° to <135°), and coxa valga (≥135°). Intra- and inter-rater reliability were analyzed.
resultsPrimary research question: Mean NSA for male adults was 129.6° (range 113.2°-148.2°; SD 5.9°) and 131.9° (range 107.1°-151.9°; SD 6.8°) for females in derotated coronal reconstructions. Age (p < 0.001 in both views) and sex influenced the NSA significantly (p = 0.002 and p < 0.001); no significant differences were found between sides (p = 0.722 and p = 0.955). Overall, an excellent reliability of repeated measurements of one or two observers was found (ICC 0.891-0.995). Secondary research question: NSA values measured in the simulated anteroposterior roentgenogram and the rotation corrected coronal reconstruction differed significantly (p < 0.001).
conclusionsWhile anteroposterior pelvis radiographs are susceptible to rotational errors, the coronal reconstruction of the proximal femur in the femoral neck plane allows the correct measurement of the NSA.
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