Trial reportActa orthopaedica2011
A prospective randomized study comparing electrochemically deposited hydroxyapatite and plasma-sprayed hydroxyapatite on titanium stems.
Trial report in Acta orthopaedica, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers, 1 of them a synthesis that pooled it.
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.
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.
Who cites it
19 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Adherence of hip and knee arthroplasty studies to RSA standardization guidelines. A systematic review.Acta orthopaedica · 2014Pooled it
- Migration behaviour of 2 clinically excellent cementless stems with different design rationales: 5-year follow-up of a randomised RSA-study.Hip international : the journal of clinical and experimental research on hip pathology and therapy · 2022Trial
- Effects of porous tantalum on periprosthetic bone remodeling around metaphyseal filling femoral stem: a multicenter, prospective, randomized controlled study.Scientific reports · 2022Trial
- A model-based radiostereometric analysis (RSA) randomized control trial evaluating the stability of the cementless Taperloc hip stem: the TapHip study.Acta orthopaedica · 2022Trial
- No difference for changes in BMD between two different cementless hip stem designs 2 years after THA.Scientific reports · 2021Trial
- Early stabilization of the uncemented Symax hip stem in a 2-year RSA study.Acta orthopaedica · 2020Trial
- Less periprosthetic bone loss following the anterolateral approach to the hip compared with the direct lateral approach.Acta orthopaedica · 2018Trial
- No medium-term advantage of electrochemical deposition of hydroxyapatite in cementless femoral stems. 5-year RSA and DXA results from a randomized controlled trial.Acta orthopaedica · 2016Trial
- Reverse hybrid and cemented hip replacement compared using radiostereometry and dual-energy X-ray absorptiometry: 43 hips followed for 2 years in a prospective trial.Acta orthopaedica · 2012Trial
- Interlocking plate compared with conventional pin fixation for undisplaced femoral neck fractures: a randomized controlled trial with radiostereometric analysis.Bone & joint open · 2026Article
- Impact of the Applied Electrode System on Properties of Electrodeposited Calcium Phosphate Coatings.Materials (Basel, Switzerland) · 2025Article
- Biomechanics of a collum-fixated short stem in total hip arthroplasty.Journal of orthopaedics · 2024Article
- Hydroxyapatite-Based Coatings on Silicon Wafers and Printed Zirconia.Journal of functional biomaterials · 2023Article
- Assessment of retention force and bone apposition in two differently coated femoral stems after 6 months of loading in a goat model.Journal of orthopaedic surgery and research · 2014Article
- 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.Acta orthopaedica · 2013Article
- [Bone substitute. Transplants and replacement materials--an update].Der Unfallchirurg · 2012Review
- Migration analysis of a metaphyseal anchored short-stem hip prosthesis.Acta orthopaedica · 2012Article
- Coating of titanium with hydroxyapatite leads to decreased bone formation: A study in rabbits.Bone & joint research · 2012Article
- Measurement of early bone loss around an uncemented femoral stem.Acta orthopaedica · 2011Article
Corrections and comments
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Authors and funding
5 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
background and purposePlasma-sprayed hydroxyapatite (HA) is a successful coating for fixation of uncemented femoral stems. There may be alternative coatings with advantages in bone remodeling and transport of bone-active substances. We investigated whether an electrochemically deposited hydroxyapatite, Bonemaster (BM), might be a safe alternative in total hip arthroplasty. Our hypothesis was that the new coating would not be inferior to the conventional one. PATIENTS AND
methods50 patients (55 hips) were included. The stem was tapered and porous-coated proximally. On top of the porous coating was either HA or BM. Patients were evaluated postoperatively and after 3, 6, 12, and 24 months to measure fixation by radiostereometric analysis (RSA), bone mineral density by dual-energy X-ray absorptiometry (DXA), and conventional radiography. Clinical evaluation was performed with Harris hip score and Oxford hip score, both preoperatively and after 2 years.
resultsAfter 2 years, the stems had subsided 0.25 (HA) and 0.28 (BM) mm and there were no statistically significant differences between the groups in any direction, regarding both migration and rotation. The BM group retained significantly more bone than the HA group in Gruen zone 1 during the first 2 years. The Harris and Oxford hip scores were similar in both groups.
interpretationElectrochemically deposited hydroxyapatite on an uncemented stem does not appear to be inferior to plasma-sprayed HA regarding clinical and radiological results, bone remodeling, and micromotion after 2 years follow-up.
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