ArticleKnee surgery, sports traumatology, arthroscopy : official journal of the ESSKA2023
Preoperative joint line convergence angle correction is a key factor in optimising accuracy in varus knee correction osteotomy.
Article in Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 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
16 citing papers in PubMed.
- Influences of Tibial Plateau Morphology on JLCA Change, Clinical Outcomes and Cartilage Regeneration After Medial Opening Wedge High Tibial Osteotomy.Orthopaedic journal of sports medicine · 2026Article
- Postoperative Joint Line Convergence Angle (JLCA) following high tibial osteotomy is affected not only by preoperative JLCA but also by postoperative hip-knee-ankle angle.Journal of experimental orthopaedics · 2026Article
- Preoperative joint line convergence angle predicts correction accuracy after medial open-wedge high tibial osteotomy.BMC musculoskeletal disorders · 2026Article
- Intramedullary and extramedullary tibial alignment guides applied to each knee of the same patient resulted in no significant differences in radiological or clinical outcomes.BMC musculoskeletal disorders · 2025Article
- Appropriate patient selection based on joint line convergence angle minimizes the difference between the mechanical axis in the standing and supine positions after open-wedge high tibial osteotomy and distal tuberosity osteotomy.Journal of orthopaedic surgery and research · 2025Article
- Repairing the medial meniscus posterior root during open-wedge high tibial osteotomy does not significantly affect clinical outcomes.Frontiers in surgery · 2025Article
- Preoperative Joint Line Convergence Angle as an Indicator of Clinical Outcomes and Accuracy of Alignment Correction After Double-Level Osteotomy.Orthopaedic journal of sports medicine · 2024Article
- Alignment rod and gap measurement methods achieve comparable alignment correction in opening wedge high tibial osteotomy for varus osteoarthritic knees.Journal of experimental orthopaedics · 2024Article
- Opening wedge high tibial osteotomy yields comparable to superior outcomes to unicompartmental knee arthroplasty at 2 years of follow-up in patients suffering from Ahlbäck III knee osteoarthritis: A propensity score-matched analysis.Journal of experimental orthopaedics · 2024Article
- Adjusted planning based on the joint line convergence angle improves correction accuracy in the standing position after opening wedge high tibial osteotomy.Journal of orthopaedic surgery and research · 2024Article
- Joint line convergence angle is the most associated alignment factor with the severity of medial knee osteoarthritis.Journal of experimental orthopaedics · 2024Article
- Influence of different standing positions on anatomical parameters of coronal whole-leg weight-bearing radiographs in preoperative planning for high tibial osteotomy.Journal of experimental orthopaedics · 2024Article
- Joint line and knee osteotomy.EFORT open reviews · 2024Review
- A systematic approach to managing complications after proximal tibial osteotomies of the knee.Journal of experimental orthopaedics · 2023Review
- Constitutional and postoperative joint line obliquity can predict serial alignment change after opening-wedge high tibial osteotomy: analysis using coronal plane alignment of the knee classification.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2023Article
- The joint line convergence angle (JLCA) correlates with intra-articular arthritis.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2023Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
10 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeThis study aimed to identify and prevent preoperative factors that can be influenced in preoperative planning to reduce postoperative malcorrections.
methodsThe method used in this study was a retrospective two-centre analysis of 78 pre and postoperative fully weight-bearing radiographs of patients who underwent valgus osteotomy correction due to symptomatic medial compartment osteoarthritis. A computer software (TraumaCad
resultsIn 78 analysed cases, postoperative malcorrection was detected in 37.2% (5.1% undercorrection, 32.1% overcorrection). Linear regression analysis revealed preoperative body mass index (BMI, p = 0.04), JLCA (p = 0.0001), and osteotomy level divergence (p = 0.0005) as factors correlated with overcorrection. In a multiple regression analysis, JLCA and osteotomy level divergence remained significant factors. Preoperative JLCA correction reduced the planned osteotomy gap (A 9.7 ± 2.8 mm vs B 8.3 ± 2.4 mm; p > 0.05) and postoperative medial proximal tibial angle (MPTA: A 94.3 ± 2.1° vs B 92.3 ± 1.5°; p < .05) in patients with preoperative JLCA ≥ 4°. The results were validated using a virtual postoperative correction of cases with overcorrection. A case series (n = 8) with a preoperative JLCA > 4 revealed a postoperative accuracy using the JLCA correction of 3.4 ± 1.9%.
conclusionPreoperative JLCA ≥ 4° and tibial osteotomy level divergence were identified as risk factors for postoperative overcorrection. Preoperative JLCA correction using the formula JLCA-2/2 is proposed to better control ideal postoperative correction and reduce MPTA. The intraoperatively realised osteotomy level should be precisely in accordance with preoperative planning. LEVEL OF EVIDENCE: III, cross-sectional study.
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.