ArticleActa orthopaedica2013
A prospective cohort study on the short collum femoris-preserving (CFP) stem using RSA and DXA. Primary stability but no prevention of proximal bone loss in 27 patients followed for 2 years.
Article in Acta orthopaedica, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 35 papers, 4 of them syntheses that pooled it.
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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
35 citing papers in PubMed, 4 syntheses or guidelines pooled it.
- Pooled it
- Periprosthetic bone remodelling of short-stem total hip arthroplasty: a systematic review.International orthopaedics · 2018Pooled it
- Pooled it
- Revision rate after short-stem total hip arthroplasty: a systematic review of 49 studies.Acta orthopaedica · 2014Pooled it
- Very early migration of a calcar-guided short stem: a randomized study of early mobilization and the influence of a calcium phosphate coating with 60 patients.Scientific reports · 2024Trial
- Denosumab prevents acetabular bone loss around an uncemented cup: analysis of secondary outcomes in a randomized controlled trial.Acta orthopaedica · 2022Trial
- Similar outcome with a new anteverted or a straight standard stem: a randomized study of 72 total hip arthroplasties evaluated with clinical variables, radiostereometry, and DXA up to 2 years.Acta orthopaedica · 2022Trial
- Greater early migration of a short-stem total hip arthroplasty is not associated with an increased risk of osseointegration failure: 5th-year results from a prospective RSA study with 39 patients, a follow-up study.Acta orthopaedica · 2020Trial
- Similar clinical results and early subsidence between the Collum Femoris Preserving and the Corail stem: a randomized radiostereometric study of 77 hips with 2 years' follow-up.Acta orthopaedica · 2019Trial
- The Influence of Tribological Pairings and Other Factors on Migration Patterns of Short Stems in Total Hip Arthroplasty.BioMed research international · 2017Trial
- Trial
- A prospective randomized radiographic and dual-energy X-ray absorptiometric study of migration and bone remodeling after implantation of two modern short-stemmed femoral prostheses.Journal of orthopaedics and traumatology : official journal of the Italian Society of Orthopaedics and Traumatology · 2015Trial
- Lower periprosthetic bone loss and good fixation of an ultra-short stem compared to a conventional stem in uncemented total hip arthroplasty.Acta orthopaedica · 2015Trial
- Abaloparatide effects on BMD in acetabular regions corresponding to DeLee and Charnley zones in women with postmenopausal osteoporosis.Bone reports · 2025Article
- Changes in Periprosthetic Bone Mineral Density Following Arthroplasty: An In-Depth Review and Current Perspectives.Current osteoporosis reports · 2025Review
- Impact of femoral stem alignment on periprosthetic bone density in THA: a study of the Avenir Complete stem.Archives of orthopaedic and trauma surgery · 2024Article
- Stable fixation of an ultra-short femoral neck-preserving hip prosthesis: a 5-year RSA, DXA, and clinical prospective outcome study of 48 patients.Acta orthopaedica · 2024Article
- Results of Total Hip Replacement Surgery Using Short-Stem Spiron Prosthesis in Vietnamese Adults.Advances in orthopedics · 2024Article
- Biomechanical Properties of Bionic Collum Femoris Preserving Hip Prosthesis: A Finite Element Analysis.Orthopaedic surgery · 2023Article
- Article
Corrections and comments
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Authors and funding
5 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
background and purposeShort femoral stems have been introduced in total hip arthroplasty in order to save proximal bone stock. We hypothesized that a short stem preserves periprosthetic bone mineral density (BMD) and provides good primary stability.
methodsWe carried out a prospective cohort study of 30 patients receiving the collum femoris-preserving (CFP) stem. Preoperative total hip BMD and postoperative periprosthetic BMD in Gruen zones 1-7 were investigated by dual-energy x-ray absorptiometry (DXA), stem migration was analyzed by radiostereometric analysis (RSA), and the Harris hip score (HHS) was determined.
results2 patients were excluded intraoperatively and 1 patient was revised due to a deep infection, leaving 27 patients for analysis. The mean HHS increased from 49 (24-79) preoperatively to 99 (92-100) after 2 years. DXA after 1 year showed substantial loss of BMD in Gruen zone 7 (-31%), zone 6 (-19%), and zone 2 (-13%, p < 0.001) compared to baseline BMD determined immediately postoperatively. The bone loss in these regions did not recover after 2 years, whereas the more moderate bone loss in Gruen zones 1, 3, and 5 partially recovered. There was a correlation between low preoperative total hip BMD and a higher amount of bone loss in Gruen zones 2, 6 and 7. RSA showed minor micromotion of the stem: mean subsidence was 0.13 (95% CI: -0.28 to 0.01) mm and mean rotation around the longitudinal axis was 0.01º (95% CI: -0.1 to 0.39) after 2 years.
interpretationWe conclude that substantial loss in proximal periprosthetic BMD cannot be prevented by the use of a novel type of short, curved stem, and forces appear to be transmitted distally. However, the stems showed very small migration-a characteristic of stable uncemented implants.
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