ArticleArchives of orthopaedic and trauma surgery2022
High varus stem alignment in short-stem total hip arthroplasty: a risk for reconstruction of femoro-acetabular offset, leg length discrepancy and stem undersizing?
Article in Archives of orthopaedic and trauma surgery, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.
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Who cites it
13 citing papers in PubMed, 20 citations in OpenAlex.
- Improved radiographic outcomes and decreased complications rate on the femoral side can be achieved by a novel designed whole-process robotic assisted hip system for total hip arthroplasty: a prospective randomized controlled trial.Journal of robotic surgery · 2024Trial
- Biomechanical effects of varus stem alignment on a cementless metadiaphyseal anchoring hip stem: a biomechanical investigation.Arthroplasty (London, England) · 2026Article
- Clinical outcomes of total hip arthroplasty in patients with multiple epiphyseal dysplasia: a single centre study of eighty eight hips at a mean of sixteen year follow-up.International orthopaedics · 2025Article
- Comparison of traditional and robotic size prediction methods and stem positioning outcomes following prediction discrepancies in hip arthroplasty.Journal of robotic surgery · 2025Article
- Canal fill and radiographic comparison analysis of novel fully hydroxyapatite coated, variable triple-tapered geometry stems: one-year follow-up after direct anterior approach total hip arthroplasty.Archives of orthopaedic and trauma surgery · 2025Article
- Mid-Term to Long-Term Outcomes of Total Hip Arthroplasty Using a Cementless Trochanteric Sparing Short Stem Through Direct Anterior Approach: A Single-Center Study.Arthroplasty today · 2025Article
- Comparison of mid-term clinical and radiological results of short and conventional femoral stems in total hip arthroplasty.Scientific reports · 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
- Do all short stem types restore biomechanical parameters of the hip? Comparison according to femoral neck osteotomy levels.International orthopaedics · 2024Article
- 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
- Outcomes of total hip arthroplasty after failed free vascularized fibular grafting for osteonecrosis of the femoral head.European journal of orthopaedic surgery & traumatology : orthopedie traumatologie · 2023Article
- The 'critical trochanter angle' does not show superiority over the CCD angle in predicting varus stem alignment in cementless short-stem total hip arthroplasty.Archives of orthopaedic and trauma surgery · 2023Article
- Varus malalignment of short femoral stem not associated with post-hip arthroplasty fracture.Archives of orthopaedic and trauma surgery · 2022Article
Corrections and comments
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Authors and funding
6 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeShort stems are increasingly used in in total hip arthroplasty (THA) because of advantages in bone and soft tissue preservation and reconstruction of hip geometry. Short stems can be inserted in a more varus position compared to conventional straight stems. This poses the risk of final varus misplacement of the femoral component, which is not intended in all femoral short stems.
methodsWe wanted to evaluate the effect of a high varus stem positioning in MIS THA on hip offset, leg length and femoral canal fill index. A series of 1052 consecutive THAs with a singular cementless femoral short stem and press-fit cup was retrospectively screened for inclusion. One hundred six patients with unilateral THA and a contralateral healthy hip met the inclusion criteria. Measurements were carried out on preoperative and 3 months anterior-posterior postoperative radiographs. Patients were divided into Group A (varus stem alignment ≤ 3°) and Group B (varus stem alignment > 3°).
resultsHip offset (HO) increased significantly in Group B by 4 mm (p = 0.013). No influence on leg length difference was detected in both groups. Preoperative CCD angle was significantly lower in Group B (p < 0.001). Canal Fill Indices (CFI) were significantly lower in Group B (CFI I: p < 0.001; CFI II p = 0.003; CF III p = 0.002).
conclusionHigh varus stem alignment > 3° leads to a statistically significant but minor increase in HO and poses the risk of stem undersizing. A preoperatively low genuine CCD angle pose a risk for varus stem positioning.
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