Trial reportInternational orthopaedics2015
Pinless navigation in total knee arthroplasty: navigation reduced by the maximum?
Trial report in International orthopaedics, 2015. 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
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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
14 citing papers in PubMed.
- Hand-held navigation may improve accuracy in minimally invasive total knee arthroplasty: a prospective randomized controlled trial.International orthopaedics · 2016Trial
- Comparison of the accuracy and efficacy of different assistive techniques in primary total knee arthroplasty: A network meta-analysis.Journal of experimental orthopaedics · 2024Article
- Navigated Versus Conventional Total Knee Arthroplasty: A Systematic Review and Meta-analysis of Prospective Randomized Controlled Trials.Journal of orthopaedics · 2024Review
- [Navigation and robotics-current status and future implications].Orthopadie (Heidelberg, Germany) · 2024Article
- Comparative Study of Pinless Navigation System versus Conventional Instrumentation in Total Knee Arthroplasty.Clinics in orthopedic surgery · 2021Observational
- Pinless Navigation in Unicompartmental Knee Arthroplasty.Journal of clinical medicine · 2021Article
- Comparison of a novel handheld accelerometer-based navigation system and conventional instrument for performing distal femoral resection in total knee arthroplasty: a randomized controlled trial.Annals of translational medicine · 2019Article
- Current concepts and future perspectives in computer-assisted navigated total knee replacement.International orthopaedics · 2019Review
- Total knee arthroplasties from the origin to navigation: history, rationale, indications.International orthopaedics · 2019Review
- What is the optimal valgus pre-set for intramedullary femoral alignment rods in total knee arthroplasty?Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2017Article
- Clinical, radiological and survivorship results after ten years comparing navigated and conventional total knee arthroplasty: a matched-pair analysis.International orthopaedics · 2017Article
- Presence of rotational errors in long leg radiographs after total knee arthroplasty and impact on measured lower limb and component alignment.International orthopaedics · 2017Article
- Using the anatomical tibial axis for total knee arthroplasty alignment may lead to an internal rotation error.International orthopaedics · 2015Article
- Does varus alignment adversely affect implant survival and function six years after kinematically aligned total knee arthroplasty?International orthopaedics · 2015Article
Corrections and comments
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Authors and funding
8 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeRestoring a neutral mechanical axis in total knee arthroplasty (TKA) (within ±3° of varus/valgus) is associated with superior functional outcome and reduced early implant failure. Using conventional alignment jigs results in malalignment in >20 % of cases. In this study, we investigated the reduction of outliers within the threshold of ±3° of leg alignment using a "pinless" navigation system in comparison with conventional alignment jigs investigated.
methodsIn this randomised prospective study, 80 patients were randomly assigned/allocated to the pinless or conventional control group. After surgery, the two groups were compared regarding outliers > ±3° by means of hip-knee-ankle angle (HKA), mechanical medial proximal tibia angle (mMPTA), mechanical lateral distal femoral angle (mLDFA) and duration of surgery. Student's unpaired t test was used for quantitative variables, Fisher's exact test compared groups (pinless vs. control) and a two-sided p value of ≤0.05 was considered statistically significant.
resultsIn the pinless group, outliers regarding HKA and mLDFA > ±3° was significantly reduced (p = 0.025 and p = 0.002 respectively). In the pinless group, the surgery duration was significantly longer (75.6 vs. 64.5 minutes, p < 0.001).
conclusionPinless navigation is effective in reducing outliers > ±3° regarding HKA without risking pin-related complications, such as fractures, infections or breaking screws. However, not all tools for conventional navigation in TKA, such as real-time measurements of the tibiofemoral axis and gap balancing, are available.
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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.