ArticleKnee surgery, sports traumatology, arthroscopy : official journal of the ESSKA2020
Joint line elevation is not associated with mid-flexion laxity in patients with varus osteoarthritis after total knee arthroplasty.
Article in Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed, 12 citations in OpenAlex.
- Mid-flexion laxity could be identified with continuous flexion-arc gap assessment in patients with a large preoperative convergence angle.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2023Article
- Restoration of the Joint Line Configuration Reproduces Native Mid-Flexion Biomechanics after Total Knee Arthroplasty: A Matched-Pair Cadaveric Study.Bioengineering (Basel, Switzerland) · 2022Article
- The effect of restored medial knee anatomy in total knee arthroplasty with the flexion first balancer technique on mid-flexion laxity and functional outcome.BMC musculoskeletal disorders · 2021Article
- Efficacy of posterior capsular release for flexion contracture in posterior-stabilized total knee arthroplasty.Journal of experimental orthopaedics · 2021Article
- A two-portal technique using a flexible reamer system is a safe and effective method for transportal anterior cruciate ligament reconstruction.Archives of orthopaedic and trauma surgery · 2020Article
- Manual Stress and Gap Spacer Systematically Underestimate Intraoperative Joint Gaps Compared with a Tensor Device in Robotic-Assisted Total Knee Arthroplasty.JB & JS open accessArticle
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6 authors at 1 institution in 1 country.
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No grant is acknowledged in the PubMed record.
Abstract
purposePrevious cadaver studies showed that the additional bone cuts in the distal and posterior femur and joint line elevation resulted in laxity at mid-flexion after total knee arthroplasty (TKA). However, these results are not always applicable to TKA candidates because the related studies used cadaver knees with no osteoarthritis. It was hypothesized that the joint line elevation results in mid-flexion laxity after TKA in patients with knee osteoarthritis. The purpose of this study was to analyze the relationship between joint line elevation and mid-flexion laxity in patients with knee osteoarthritis.
methods30 knees with varus osteoarthritis undergoing TKA were evaluated. Two femoral trial component models were prepared: (1) normal model with a thickness of the distal and posterior femoral components of 9 mm, and (2) 2-mm joint line elevation model with a thickness of the distal and posterior femoral components of 9 - 2 = 7 mm. This 2-mm joint line elevation model simulated an additional bone cut in the distal and posterior femur, and joint line elevation, without an additional bone cut. The femoral trial component models were set before implantation and measured the joint gap kinematics using a tensor device through the full knee range of motion.
resultsThe differences in joint gap change from 30° to 90° were not statistically significant between the two models. However, the joint line elevation model decreased the joint gap laxity at 120° (p = 0.02) and at 145° (p = 0.01).
conclusionsThis study showed that a 2-mm joint line elevation was not associated with mid-flexion laxity in patients with varus osteoarthritis in the knee. The results of this study differed from the results in previous cadaver studies. LEVEL OF EVIDENCE: Therapeutic study, level II, prospective comparative study.
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