ArticleBone & joint research2021
Effect of stem position and length on bone-stem constructs after cementless hip arthroplasty.
Article in Bone & joint research, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.
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
14 citing papers in PubMed, 25 citations in OpenAlex.
- Revision surgery for aseptic prosthetic loosening in patients treated for knee tumors: Role of gait and imaging parameters.Journal of orthopaedics · 2025Article
- Mechanical Effects of Offset and Length of the Cementless Stem for Initial Fixation to the Femur.Clinics in orthopedic surgery · 2025Article
- Floating-embedded stems reduce tibial stress shielding in total knee revision arthroplasty.Journal of orthopaedic surgery and research · 2025Article
- Comparison of Early Postoperative Stress Distribution around Short and Tapered Wedge Stems in Femurs with Different Femoral Marrow Cavity Geometries Using Finite Element Analysis.Clinics in orthopedic surgery · 2024Article
- Finite element analysis of mechanical stress in a cementless tapered-wedge short stem in the varus position.Journal of orthopaedic surgery and research · 2024Article
- Direct anterior approach with conventional instruments versus robotic posterolateral approach in elective total hip replacement for primary osteoarthritis: a case-control study.Journal of orthopaedics and traumatology : official journal of the Italian Society of Orthopaedics and Traumatology · 2024Article
- Ten-year follow-up and clinical outcome of a metaphyseal anchoring short hip stem prosthesis: a retrospective single-centre analysis.International orthopaedics · 2024Article
- Femoral Bowing Increases Early Postoperative Stress around the Femoral Stem in Humans: A Finite Element Analysis.Clinics in orthopedic surgery · 2023Article
- Is it reasonable to shorten the length of cemented stems? A finite element analysis and biomechanical experiment.Frontiers in bioengineering and biotechnology · 2023Article
- Stress distributions of the short stem and the tapered wedge stem at different alignments: a finite element analysis study.Journal of orthopaedic surgery and research · 2022Article
- Patient-specific three-dimensional evaluation of interface micromotion in two different short stem designs in cementless total hip arthroplasty: a finite element analysis.Journal of orthopaedic surgery and research · 2022Article
- Comparison of periprosthetic femoral fracture torque and strain pattern of three types of femoral components in experimental model.Bone & joint research · 2022Article
- Biomechanical effect of anatomical tibial component design on load distribution of medial proximal tibial bone in total knee arthroplasty : finite element analysis indicating anatomical design prevents stress-shielding.Bone & joint research · 2022Article
- Do radiological findings around the Fitmore stem change over time? : radiolucency around the short hip stem disappears within a few years: a retrospective study.Bone & joint open · 2022Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
5 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
aimsThere are concerns regarding initial stability and early periprosthetic fractures in cementless hip arthroplasty using short stems. This study aimed to investigate stress on the cortical bone around the stem and micromotions between the stem and cortical bone according to femoral stem length and positioning.
methodsIn total, 12 femoral finite element models (FEMs) were constructed and tested in walking and stair-climbing. Femoral stems of three different lengths and two different positions were simulated, assuming press-fit fixation within each FEM. Stress on the cortical bone and micromotions between the stem and bone were measured in each condition.
resultsStress concentration was observed on the medial and lateral interfaces between the cortical bone and stem. With neutral stem insertion, mean stress over a region of interest was greater at the medial than lateral interface regardless of stem length, which increased as the stem shortened. Mean stress increased in the varus-inserted stems compared to the stems inserted neutrally, especially at the lateral interface in contact with the stem tip. The maximum stress was observed at the lateral interface in a varus-inserted short stem. All mean stresses were greater in stair-climbing condition than walking. Each micromotion was also greater in shorter stems and varus-inserted stems, and in stair-climbing condition.
conclusionThe stem should be inserted neutrally and stair-climbing movement should be avoided in the early postoperative period, in order to preserve early stability and reduce the possibility of thigh pain, especially when using a shorter stem. Cite this article:
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.