Evidence map›Paper›PMID 29030711›Full record

Observational studyEuropean journal of orthopaedic surgery & traumatology : orthopedie traumatologie2018

The learning curve in short-stem THA: influence of the surgeon's experience on intraoperative adjustments due to intraoperative radiography.

Lennard Loweg, Karl Philipp Kutzner, Matthias Trost, Marlene Hechtner, Philipp Drees, Joachim Pfeil, Michael Schneider

Abstract readObservational Study
In one paragraph

Observational study in European journal of orthopaedic surgery & traumatology : orthopedie traumatologie, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed, 1 pooled it
–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

20 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Review
  3. Article
  4. [Short-stem THA-complications and therapy options].Orthopadie (Heidelberg, Germany) · 2025
    Article
  5. Same same but different: Introduction of a classification system in calcar-guided short-stem total hip arthroplasty.Hip international : the journal of clinical and experimental research on hip pathology and therapy · 2025
    Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Femoral antetorsion after calcar-guided short-stem total hip arthroplasty: A cadaver study.Journal of orthopaedic research : official publication of the Orthopaedic Research Society · 2022
    Article
  13. Primary outcomes of a femoral neck-preserving stem: a multicentre clinical-radiological analysis at 5-year follow-up.European journal of orthopaedic surgery & traumatology : orthopedie traumatologie · 2022
    Article
  14. Defining 'undersizing' in short-stem total hip arthroplasty: the importance of sufficient contact with the lateral femoral cortex.Hip international : the journal of clinical and experimental research on hip pathology and therapy · 2022
    Article
  15. Review
  16. Article
  17. Article
  18. Article
  19. A new method for intraoperative assessment of leg length, sizing and placement of the components in total hip replacement.European journal of orthopaedic surgery & traumatology : orthopedie traumatologie · 2020
    Article
  20. Observational
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.

Lennard LowegDepartment for Orthopaedic Surgery and Traumatology, St. Josefs Hospital Wiesbaden, Beethovenstr. 20, 65189, Wiesbaden, Germany.
Karl Philipp KutznerDepartment for Orthopaedic Surgery and Traumatology, St. Josefs Hospital Wiesbaden, Beethovenstr. 20, 65189, Wiesbaden, Germany. kkutzner@joho.de.
Matthias TrostDepartment for Orthopaedic Surgery and Traumatology, St. Josef-Hospital, University Bochum, Bochum, Germany.
Marlene HechtnerInstitute of Medical Biostatistics, Epidemiology and Informatics (IMBEI), University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany.
Philipp DreesDepartment for Orthopaedics and Traumatology, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany.
Joachim PfeilDepartment for Orthopaedic Surgery and Traumatology, St. Josefs Hospital Wiesbaden, Beethovenstr. 20, 65189, Wiesbaden, Germany.
Michael SchneiderDepartment for Orthopaedic Surgery and Traumatology, St. Josefs Hospital Wiesbaden, Beethovenstr. 20, 65189, Wiesbaden, Germany.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionShort-stem THA has become increasingly popular over the last decade. However, implantation technique differs from conventional THA and thus possibly involves a distinct learning curve. The purpose of this study was to evaluate the value of intraoperative radiography and the influence of the surgeon's experience on intraoperative adjustments in short-stem THA.

methodsA total of 287 consecutive short-stem THAs, operated by a total of 24 senior consultants, consultants and residents in training, were prospectively included. Intraoperative radiography was performed after trial reduction. Preoperative planning and intraoperative outcome with regard to positioning, sizing of components as well as resulting offset and leg length were compared. Frequency, reason and type of intraoperative adjustments were documented in relation to the surgeon's experience. Operation time was assessed.

resultsOne hundred and fifty-six (54.4%) procedures were carried out by one of three senior consultants, and a total of nine consultants and 12 residents in training performed 105 (36.6%) and 26 (9.0%) operations, respectively. In 121 cases (42.2%), intraoperative adjustments were made following intraoperative radiography. Intraoperative adjustments of one or more components were made by senior consultants in 51 cases (32.7%), by consultants in 53 cases (50.5%) and by residents in 17 cases (65.4%), respectively. The most common cause was undersizing of the stem. Operation time varied markedly between groups of surgeons. DISCUSSION: Short-stem THA involves a learning curve. Intraoperative radiography is decisive for prevention of malpositioning and undersizing of components, as well as loss of offset and leg length discrepancies. Hence, it should be considered mandatory, especially for less experienced surgeons.

Indexed as

Clinical CompetenceLearning CurveArthroplasty, Replacement, HipHip JointHip ProsthesisHumansInternship and ResidencyIntraoperative CareOperative TimePhysiciansProspective StudiesRadiographyAdjustmentsIntraoperative radiographyLearning curveOptimysShort stemTotal hip arthroplasty

Identifiers

PMID29030711
PMCPMC5775369

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.