ArticleArchives of orthopaedic and trauma surgery2026
Feasibility of medial parapatellar approach in unicompartmental knee arthroplasty for moderate to severe varus deformity.
Article in Archives of orthopaedic and trauma surgery, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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
0 citing papers in PubMed.
No citing paper in PubMed yet.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
6 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
research background and purposeUnicompartmental knee arthroplasty (UKA) is well-established for mild varus deformity, but its application in moderate to severe varus cases remains technically challenging. This study aims to preliminarily evaluate whether adopting the traditional medial parapatellar approach in UKA procedures for these complex deformities can yield acceptable early outcomes.
methodsA retrospective study was conducted. Between January 2023 and March 2024, 9 patients with moderate to severe varus deformity underwent medial UKA using a cemented fixed-bearing Link prosthesis by medial parapatellar approach. The cohort included 1 male and 8 females with a mean age of 65.3 years and mean weight of 60.6 kg. All procedures were performed by a single surgeon. Preoperative and final follow-up assessments included bilateral full-length standing radiographs for hip-knee-ankle angle (HKA), The Angle between the femoral mechanical axis and the tibial mechanical axis (hip-knee-ankle angle, HKA) was measured by software and recorded. The hip-knee-ankle (HKA) angle was reported directly as the angle between the femoral and tibial mechanical axes. The normal alignment range was defined as 178°-182°, with values below 178° indicating varus deformity and those above 182° indicating valgus deformity. Knee range of motion (ROM), Hospital for Special Surgery (HSS) score, and Knee Society Score (KSS). Statistical analysis was performed using SPSS 26.0, with P < 0.05 considered statistically significant.
resultsThe follow-up of 15.20 ± 1.95 months, all patients demonstrated primary wound healing without perioperative complications. Significant improvements were observed in all measured parameters: HSS score improved from 50.11 ± 3.41 to 92.11 ± 2.37 95% CI: (40.12, 43.88); KSS score from 59.89 ± 3.55 to 88.78 ± 2.49 95% CI: (27.65, 30.13); KSS function score from 44.44 ± 6.82 to 76.67 ± 7.07 95% CI: (28.33,36.12); ROM from 94.22 ± 1.92° to 122.67 ± 2.83° 95% CI: (26.60, 30.29); and HKA from 164.58 ± 4.16° to 176.64 ± 2.20°95% CI: (10.16, 13.98). All improvements were statistically significant (P < 0.001). No cases of aseptic loosening, unexplained pain, or polyethylene liner dislocation were observed during follow-up.
conclusionThis preliminary experience suggests medial parapatellar approach for UKA in moderate to severe varus deformity may represent a technical option for carefully selected cases. However, these observations are limited by the small sample size and relatively short follow-up. Further validation through larger-scale studies with extended follow-up is warranted to establish long-term efficacy and safety.
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.