ArticleJournal of experimental orthopaedics2019
A shortened uncemented stem offers comparable positioning and increased metaphyseal fill compared to a standard uncemented stem.
Article in Journal of experimental orthopaedics, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed.
- Results of an Ultra Short Metaphyseal Filling Cementless Stem in Primary Total Hip Arthroplasty: Mean 12.1-Year Follow-up.Indian journal of orthopaedics · 2026Article
- Finite element analysis of mechanical stress in a cementless tapered-wedge short stem in the varus position.Journal of orthopaedic surgery and research · 2024Article
- No significant differences in 60-day postoperative complication rates between conventional and shortened stems.Journal of experimental orthopaedics · 2023Article
- A smaller femoral stem is needed for asian females.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
- Comparison of tapered-wedge short and standard-length femoral stems in single-stage bilateral direct anterior total hip arthroplasty.International orthopaedics · 2021Article
- Promising medium-term results of anterior approach with an anatomical short stem in primary hip arthroplasty.Journal of orthopaedics and traumatology : official journal of the Italian Society of Orthopaedics and Traumatology · 2021Article
- Long-term outcomes of a dual-mobility cup and cementless triple-taper femoral stem combination in total hip replacement: a multicenter retrospective analysis.Journal of orthopaedic surgery and research · 2019Article
Corrections and comments
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Authors and funding
5 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundShortened stems are increasingly used in uncemented total hip arthroplasty (THA) as they represent a compromise between the metaphyseal anchorage of short stems and the facilitated axial alignment of standard stems. The purpose of this study was to compare the metaphyseal canal-fill ratio (CFR) and axial alignment of a shortened double-tapered stem with those of a standard stem. The hypothesis was that the shortened stem would achieve greater metaphyseal fill and comparable axial alignment.
methodsThe authors reviewed routine follow-up anteroposterior radiographs taken 2 months after THA to evaluate metaphyseal fill and axial alignment of a shortened stem (n = 96) and a standard stem (n = 101). The CFR was calculated at the level of the tip and superior margin of the lesser trochanter. Stem alignment was defined as the angle between the stem axis and the proximal anatomic femoral axis. Stems were classified as being in varus or valgus alignment if they deviated by more than 3° from the anatomic axis of the femur.
resultsHips implanted with shortened and standard stems had comparable demographics and axial alignment (1.1° ± 1.7° vs 0.8° ± 1.2°; p = 0.331). However, varus alignment was observed in 5% of shortened stems compared to only 1% of standard stems, though this difference was not significant (p = 0.111). The femoral CFR was greater using shortened stems than using standard stems, both at the level of the tip of the lesser trochanter (0.91 ± 0.05 vs 0.85 ± 0.08; p < 0.001) and at its superior margin (0.76 ± 0.06 vs 0.72 ± 0.07; p < 0.001).
conclusionsCompared to the standard stem, the shortened stem had increased metaphyseal filling and equivalent alignment. These findings suggest that shortened stems could provide adequate metaphyseal fixation and correct alignment. Further studies remain necessary to evaluate how shortened stems perform in terms of osseointegration, clinical outcomes and survival.
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