ArticleArthroplasty today2026
Collared Triple Taper Stems Have Superior Biomechanical Characteristics in Compromised Bone.
Article in Arthroplasty today, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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.
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
1 citing paper in PubMed.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
7 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Background: Femoral periprosthetic fractures following total hip arthroplasty are a common cause for early revisions, especially in osteoporotic patients. Despite the protective nature of cemented stems, the widespread use of press-fit stems persists. The following biomechanical study quantifies resistance against subsidence and failure provided by a collar and triple taper stem design in a synthetic osteoporotic femur model. Methods: Twenty-four synthetic osteoporotic femurs were instrumented with 4 uncemented stems (6 per group): single-wedge (blade) stems, triple-taper metaphyseal stems with and without a collar, and fit-and-fill stems. Each femur was subjected to 10,000 cycles of axial and torsional loading to simulate walking while the following outcomes measures were recorded: stem subsidence during axial loading, rotational stiffness, and torque to failure. Results: The single-wedge stem experienced greater subsidence (1.4 ± 0.2 mm) compared to all other stem designs, while the triple-taper stem with a collar demonstrated the least amount of subsidence (0.53 ± 0.12 mm). The rotational stiffness of the collared triple-taper stem was significantly greater than the 3 other designs, and the maximum torque to failure for both triple-taper stem designs was significantly greater than the single-wedge stem and the fit-and-fill stem. Conclusions: This study demonstrated superior biomechanical characteristics of collared triple-taper femoral stems compared to single-wedge, collarless triple-taper, and fit-and-fill stems. Clinically, this suggests collared stems should be considered when performing uncemented arthroplasty in patients with compromised bone.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
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.