Evidence map›Paper›PMID 7604698›Full record

Trial reportActa orthopaedica Scandinavica1995

Evaluation of Boneloc. Chemical and mechanical properties, and a randomized clinical study of 30 total hip arthroplasties.

J Thanner, C Freij-Larsson, J Kärrholm, H Malchau, B Wesslén

Abstract readClinical TrialRandomized Controlled Trial
PubMed Publisher
In one paragraph

Trial report in Acta orthopaedica Scandinavica, 1995. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed, 4 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

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.

2 · The registry

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.

3 · Its place in the literature

Who cites it

21 citing papers in PubMed, 4 syntheses or guidelines pooled it.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Pooled it
  5. 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 · 2022
    Trial
  6. Trial
  7. A prospective randomised radiostereometric analysis trial of SmartSet HV and Palacos R bone cements in primary total hip arthroplasty.Journal of orthopaedics and traumatology : official journal of the Italian Society of Orthopaedics and Traumatology · 2010
    Trial
  8. Article
  9. Review
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. The rationale for a spine registry.European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society · 2006
    Review
  19. Article
  20. Factors affecting the mechanical and viscoelastic properties of acrylic bone cement.Journal of materials science. Materials in medicine · 2002
    Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

5 authors.

J ThannerDepartment of Orthopedics, Sahlgren Hospital, Göteborg, Sweden.
C Freij-Larsson
J Kärrholm
H Malchau
B Wesslén

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

We evaluated the mechanical, chemical and clinical properties of Boneloc cement using radiostereometry and a series of laboratory tests. Compared to a standard cement (Palacos) the new cement displayed reduced tensile strength, elastic modulus, curing and glass transition temperatures. The amount of MMA extracted during 3 weeks in methanol was smaller for the Boneloc, but the total amount of released monomers was larger. The adhesion to stainless steel and bone did not differ. Radiostereometric analysis during the first postoperative year in 30 patients randomized to fixation of hip prostheses using either of the 2 cements displayed increased proximal migration of the cup and increased stem subsidence when Boneloc had been used. Part of the stem subsidence occurred inside the cement mantle. On the basis of these findings, we conclude that the inferior fixation in the Boneloc group is mainly caused by its mechanical properties. Other mechanisms, such as increased release of monomers, may also be important.

Indexed as

Hip ProsthesisAgedBone CementsEvaluation Studies as TopicFemaleHumansMaleMethacrylatesMethylmethacrylateMethylmethacrylatesMiddle AgedTensile StrengthBone CementsMethacrylatesMethylmethacrylatemethylmethacrylate-n-decylmethacrylate-isobornylmethacrylateMethylmethacrylates

Identifiers

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.