Observational studyBMC musculoskeletal disorders2021
Better short-term function after unicompartmental compared to total knee arthroplasty.
Observational study in BMC musculoskeletal disorders, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT04598568 (Post-market Clinical Follow-up on the balanSys UNI Knee Prosthesis Implanted With a Spacer Block Surgical Technique), which is not on this map. Cited by 40 papers, 3 of them syntheses that pooled 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.
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.
Post-market Clinical Follow-up on the balanSys UNI Knee Prosthesis Implanted With a Spacer Block Surgical Technique
Who cites it
40 citing papers in PubMed, 3 syntheses or guidelines pooled it, 61 citations in OpenAlex.
- Postoperative activity participation and functional recovery after robotic-assisted unicompartmental knee arthroplasty: a systematic review and single-arm meta-analysis.Journal of robotic surgery · 2026Pooled it
- Pooled it
- The impact of patellofemoral joint diseases on functional outcomes and prosthesis survival in patients undergoing unicompartmental knee arthroplasty: a systematic review and meta-analysis.Journal of orthopaedic surgery and research · 2024Pooled it
- Visual inspection provides precise intraoperative evaluation of tibial slope during unicompartmental knee arthroplasty.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2026Article
- Age-stratified risk of major systemic complications following unicompartmental versus total knee arthroplasty: a nationwide cohort study.Knee surgery & related research · 2026Article
- In vivo three-dimensional kinematics in unicompartmental knee arthroplasty: A sports activity cluster analysis.Journal of experimental orthopaedics · 2026Article
- The effect of mechanical axis correction on clinical outcomes after unicondylar knee arthroplasty.BMC musculoskeletal disorders · 2026Article
- Mid-term Functional Outcomes Following One-stage Single Sitting Bilateral and Unilateral Unicompartmental Knee Arthroplasty: A 5-year Prospective Cohort Study.Journal of orthopaedic case reports · 2026Article
- Data from the Swiss National Arthroplasty Registry SIRIS suggest that unicompartmental knee arthroplasty is associated with a lower risk of periprosthetic joint infection than total knee arthroplasty.Archives of orthopaedic and trauma surgery · 2026Article
- Unicompartmental Knee Arthroplasty for Medial Osteoarthritis in Patients Aged 75 Years and Older: A Comparative Study Evaluating Patient Outcomes With Mobile-Bearing and Fixed-Bearing Prostheses.Geriatric orthopaedic surgery & rehabilitation · 2026Article
- Mid-term performance of a unicompartmental knee prosthesis.Journal of experimental orthopaedics · 2026Article
- Comparative efficacy of total knee arthroplasty versus unicompartmental knee arthroplasty in obese patients with medial knee osteoarthritis.Frontiers in medicine · 2026Article
- Is age an advantage? Improved outcomes after medial unicompartmental knee arthroplasty in patients aged ≥70 years.Journal of experimental orthopaedics · 2025Article
- Long-Term Outcomes of Combined Medial Unicompartmental Knee Replacement and Anterior Cruciate Ligament Reconstruction in Middle-Aged Patients with ACL-Deficient Knees.Journal of clinical medicine · 2025Article
- Thromboembolic and infectious complication risks in TKA and UKA: evidence from a Japanese nationwide cohort.Knee surgery & related research · 2025Article
- Long-Term Excellent Clinical Outcomes, High Survivorship, and Low Osteoarthritis Progression in Lateral Unicompartmental Knee Arthroplasty: A 10-Year Minimum Follow-Up.Journal of clinical medicine · 2025Article
- Age and waist circumference as key determinants of postoperative thrombosis and squatting recovery after unicompartmental knee arthroplasty.Aging clinical and experimental research · 2025Article
- Predicting unicompartmental arthroplasty success: a three year Indian study.International orthopaedics · 2025Article
- Factors influencing UK arthroplasty surgeons' decision-making between total and medial unicompartmental knee surgery: A vignette-based behavioural experiment.Journal of experimental orthopaedics · 2025Article
- The influence of patellar morphology on clinical outcomes after unicompartmental knee arthroplasty.International orthopaedics · 2024Article
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
backgroundUnicompartmental knee arthroplasty (UKA) is an established treatment option for patients with unicompartmental osteoarthritis (OA). However, strict patient selection is crucial for its success. The proposed advantages include nearly natural knee kinematics, faster rehabilitation and better functional outcomes. Despite the aforementioned facts and it's proven cost-effectiveness, there are still hesitations for the use of UKA as an alternative to total knee arthroplasty (TKA). Key objectives of this study were therefore to assess clinical and patient-reported outcome (PRO) as well as patient's satisfaction after medial UKA in comparison to TKA.
methodsTo assess the outcome after UKA we conducted a prospective multi-center study. 116 patients with unicompartmental OA and indication for UKA were included. Overall 54 females and 62 males with an average age of 62.7 years (±9.8) and an average body mass index (BMI) of 29.2 (± 3.7) were recruited. Clinical results and PRO were assessed using the Knee Society Score (KSS). Follow-ups took place 3 months, 1 and 2 years after surgery including clinical examination, radiographs, assessment of PRO and adverse events. Pain and satisfaction was evaluated using a visual analog scale (VAS, 0 (worst) to 10 (best)). For comparison with TKA a propensity score matched-pair analysis was performed to eliminate confounders. Matching criteria were gender, patient's age, BMI and comorbidities. A total of 116 matched-pairs were analysed.
resultsThere was no revision in the UKA group until 2 years after surgery. Revision rates were higher in the TKA group (0.6%). Preoperative KSS-Scores were higher within the UKA cohort (p < 0.001). After surgical treatment, PROMs displayed a significant improvement (p < 0,001) in both cohorts. Regarding the Knee-Score (Pain, Alignment, ROM) we observed no differences between cohorts after 12 months. The Function-Score demonstrated significantly better results in the UKA cohort (UKA vs. TKA 95 vs 80, p < 0.001). Patient satisfaction was also higher in UKA patients (UKA vs TKA 9.0 vs 8.8, p = 0.019).
conclusionPatients of both cohorts showed high satisfaction after knee arthroplasty. UKA resulted in higher function scores compared to TKA without increased revision rate during short-term follow-up. Therefore, UKA is a good treatment option for unicompartmental OA.
trial registrationClinicaltrials.gov, NCT04598568 . Registered 22 October 2020 - Retrospectively registered.
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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.