Evidence map›Paper›PMID 26305058›Full record

SynthesisSkeletal radiology2016

The femoral neck-shaft angle on plain radiographs: a systematic review.

Christoph Kolja Boese, Jens Dargel, Johannes Oppermann, Peer Eysel, Max Joseph Scheyerer, Jan Bredow, Philipp Lechler

Abstract readSystematic Review
PubMed Publisher
In one paragraph

Synthesis in Skeletal radiology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 52 papers.

0numbers the graph read from it
0cells of the map it votes in
52citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

52 citing papers in PubMed.

  1. Review
  2. Article
  3. Article
  4. Does Deformity Severity Dictate Which Side Initially Develops Symptoms in Bilaterally Dysplastic Hips?Journal of orthopaedic research : official publication of the Orthopaedic Research Society · 2026
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  5. Review
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  7. Article
  8. Article
  9. Article
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors.

Christoph Kolja BoeseDepartment of Orthopaedic and Trauma Surgery, University Hospital of Cologne, Joseph-Stelzmann Str. 9, 50931, Cologne, Germany. christoph.boese@uk-koeln.de.
Jens DargelDepartment of Orthopaedic and Trauma Surgery, University Hospital of Cologne, Joseph-Stelzmann Str. 9, 50931, Cologne, Germany.
Johannes OppermannDepartment of Orthopaedic and Trauma Surgery, University Hospital of Cologne, Joseph-Stelzmann Str. 9, 50931, Cologne, Germany.
Peer EyselDepartment of Orthopaedic and Trauma Surgery, University Hospital of Cologne, Joseph-Stelzmann Str. 9, 50931, Cologne, Germany.
Max Joseph ScheyererDepartment of Orthopaedic and Trauma Surgery, University Hospital of Cologne, Joseph-Stelzmann Str. 9, 50931, Cologne, Germany.
Jan BredowDepartment of Orthopaedic and Trauma Surgery, University Hospital of Cologne, Joseph-Stelzmann Str. 9, 50931, Cologne, Germany.
Philipp LechlerDepartment of Trauma, Hand and Reconstructive Surgery, University of Giessen and Marburg, Marburg, Germany. lechler@med.uni-marburg.de.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveThe femoral neck-shaft angle (NSA) is an important measure for the assessment of the anatomy of the hip and planning of operations. Despite its common use, there remains disagreement concerning the method of measurement and the correction of hip rotation and femoral version of the projected NSA on conventional radiographs. We addressed the following questions: (1) What are the reported values for NSA in normal adult subjects and in osteoarthritis? (2) Is there a difference between non-corrected and rotation-corrected measurements? (3) Which methods are used for measuring the NSA on plain radiographs? (4) What could be learned from an analysis of the intra- and interobserver reliability? MATERIAL AND

methodsA systematic literature search was performed including 26 publications reporting the measurement of the NSA on conventional radiographs.

resultsThe mean NSA of healthy adults (5,089 hips) was 128.8° (98-180°) and 131.5° (115-155°) in patients with osteoarthritis (1230 hips). The mean NSA was 128.5° (127-130.5°) for the rotation-corrected and 129.5° (119.6-151°) for the non-corrected measurements.

conclusionOur data showed a high variance of the reported neck-shaft angles. Notably, we identified the inconsistency of the published methods of measurement as a central issue. The reported effect of rotation-correction cannot be reliably verified.

Indexed as

AdultAnatomic LandmarksFemaleFemur NeckHumansMaleOsteoarthritis, HipPrevalenceRadiographyReproducibility of ResultsSensitivity and SpecificityCaput-collum-diaphyseal angleCCDHip anatomyHip arthroplastyNeck shaft angleNSA

Identifiers

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.