Observational studyArchives of orthopaedic and trauma surgery2017
Outcome of extensive varus and valgus stem alignment in short-stem THA: clinical and radiological analysis using EBRA-FCA.
Observational study in Archives of orthopaedic and trauma surgery, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 51 papers.
What it found
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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.
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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.
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Who cites it
51 citing papers in PubMed, 88 citations in OpenAlex.
- Preoperative factors associated with alignment change from planned metaphyseal- to diaphyseal-dominant fixation in calcar-guided short-stem total hip arthroplasty.International orthopaedics · 2026Article
- Progression of cortical hypertrophy, subsidence and thigh pain after short curved fitmore femoral hip stem over 10 years.Journal of orthopaedic surgery and research · 2025Article
- [Short-stem THA-complications and therapy options].Orthopadie (Heidelberg, Germany) · 2025Article
- High subsidence rate in primary total hip arthroplasty with a taper wedge stem featuring a three-dimensionally printed porous structure.Archives of orthopaedic and trauma surgery · 2025Article
- Influence of stem length on sagittal alignment in total hip arthroplasty: a comparison between short and standard stems.BMC musculoskeletal disorders · 2025Article
- 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 · 2025Article
- Stem subsidence in total hip arthroplasty: retrospective investigation of a short stem using a simple measurement approach.Archives of orthopaedic and trauma surgery · 2024Article
- Influence of broach surface design of a fully hydroxyapatite coated, double tapered stem on periprosthetic bone mineral density after total hip arthroplasty: a study based on the morphology of the proximal femur.Archives of orthopaedic and trauma surgery · 2024Article
- Native hip geometry restoration in total hip arthroplasty: a retrospective analysis of eight different short stems.European journal of orthopaedic surgery & traumatology : orthopedie traumatologie · 2024Article
- Effect of Stem Design and Positioning on the Leg Axis after Total Hip Arthroplasty: A Secondary Analysis.Journal of clinical medicine · 2024Article
- A comprehensive analysis on contributing factors for varus or valgus malposition of femoral stems in uncemented total hip arthroplasty via DAA.Journal of orthopaedics · 2024Article
- Calcar-guided short-stem total hip arthroplasty in fractures of the femoral neck: a prospective observational study of 68 hips.Archives of orthopaedic and trauma surgery · 2024Observational
- Subsidence after calcar-guided short stem total hip arthroplasty: five-year results of a prospective multicentre study.International orthopaedics · 2024Article
- Clinical and radiological outcomes of an uncemented metaphyseal short stem at minimum 10 years of follow-up: a prospective observational study.Archives of orthopaedic and trauma surgery · 2024Observational
- Accuracy and safety of a new robotic arm for both femoral and acetabular side in total hip arthroplasty: a cadaveric study.Journal of orthopaedic surgery and research · 2023Article
- Retrospective clinical and X-ray-based outcome analysis of a short-stem hip arthroplasty taking into account the operative learning curve over 7 years in the 3-year control course.Archives of orthopaedic and trauma surgery · 2023Article
- Subsidence analysis of a cementless short stem THA using EBRA-FCA - A seven-year prospective multicentre study.Journal of orthopaedics · 2023Article
- A smaller femoral stem is needed for asian females.Archives of orthopaedic and trauma surgery · 2023Article
- Sexual activity after short-stem total hip arthroplasty. Does stem size matter?Archives of orthopaedic and trauma surgery · 2023Article
- High grade femoral stem subsidence in uncemented hip hemiarthroplasty - A radiographic analysis and an early prediction while treating femoral neck fractures.International orthopaedics · 2023Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
5 authors at 3 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
introductionThe principle of implanting a calcar-guided short stem consists of an individual alignment alongside the medial calcar providing the ability of reconstructing varus and valgus anatomy in a great variety. However, still, there are broad concerns about the safety of extensive varus and valgus positioning in regard to stability, bony alterations, and periprosthetic fractures. MATERIALS AND
methods216 total hip arthroplasties using a calcar-guided short stem (optimys, Mathys Ltd.) in 162 patients were included. Depending on postoperative CCD angle, hips were divided into five groups (A-E). Varus- and valgus tilt and axial subsidence were assessed by "Einzel-Bild-Roentgen-Analyse"(EBRA-FCA, femoral component analysis) over a 2-year follow-up. The incidence of stress-shielding and cortical hypertrophy as well as clinical outcome [Harris Hip Score (HHS)] were reported.
resultsPostoperative CCD angles ranged from 117.9° to 145.6° and mean postoperative CCD angles in group A-E were 123.3°, 128.0°, 132.4°, 137.5°, and 142.5°, respectively. After 2 years, the mean varus/valgus tilt was -0.16°, 0.37°, 0.48°, 0.01°, and 0.86°, respectively (p = 0.502). Axial subsidence after 2 years was 1.20, 1.02, 1.44, 1.50, and 2.62 mm, respectively (p = 0.043). No periprosthetic fractures occurred and none of the stems had to be revised. Rates of stress-shielding and cortical hypertrophy as well as HHS showed no significant difference between the groups.
conclusionsValgus alignment results in increased subsidence but does not affect the clinical outcome. There is no difference in stress shielding and cortical hypertrophy between the groups. The authors recommend long term monitoring of valgus aligned stems.
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