ArticleKnee surgery, sports traumatology, arthroscopy : official journal of the ESSKA2020
Coronal and sagittal laxity affects clinical outcomes in posterior-stabilized total knee arthroplasty: assessment of well-functioning knees.
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. An erratum has been issued. Cited by 15 papers.
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Who cites it
15 citing papers in PubMed.
- Is it time for a systematic and objective assessment of knee laxity? The impact of objective knee laxity after TKA on patient-reported outcomes: a comprehensive review.Archives of orthopaedic and trauma surgery · 2026Review
- Full-flexion gap balancing-driven personalized preoperative planning for TKA: biomechanical evidence of improved load symmetry in an in vitro model.Arthroplasty (London, England) · 2026Article
- Proximal Tibial Resection Alone Leads to a Significant Increase in Flexion Gap Size in Tibia-First Robotic-Assisted Posterior-Stabilized Total Knee Arthroplasty.Clinics in orthopedic surgery · 2026Observational
- Ultrasound can assess soft tissue laxity in osteoarthritic knees and after total knee arthroplasty.Journal of experimental orthopaedics · 2025Article
- Do Kinematics or Muscle Function During Sit-to-Stand Change Following a Primary Total Knee Arthroplasty?Annals of biomedical engineering · 2025Article
- Simultaneous bilateral total knee arthroplasty with and without patellar resurfacing using a zirconium ceramic femoral component demonstrated equivalent short-term outcomes: A prospective randomised clinical trial.Journal of experimental orthopaedics · 2025Article
- Extension stress radiographs for coronal laxity assessment in revision TKA: high reliability and increased valgus laxity in this population.Archives of orthopaedic and trauma surgery · 2025Article
- Isolated Polyethylene Insert Exchange for Instability after Total Knee Arthroplasty: Comparable Survival Rates and Range of Motion and Improved Clinical Scores Regardless of Hyperextension.Clinics in orthopedic surgery · 2024Article
- Varus-valgus native knee laxity in extension displays an almost rectangular pattern and does not correlate with lower limb alignment.PloS one · 2024Article
- Residual varus alignment after posterior-stabilized total knee arthroplasty limits medial soft tissue remodeling.BMC musculoskeletal disorders · 2023Article
- Limited medial posterior capsular release increases the intraoperative medial component gap while maintaining the joint varus angle at extension in posterior-stabilized total knee arthroplasty.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2023Article
- The Correlation between Objective Ligament Laxity and the Clinical Outcome of Mechanically Aligned TKA.Journal of clinical medicine · 2023Article
- Clinical outcomes of two-stage revision total knee arthroplasty in infected cases with antibiotic-loaded cement spacers produced using a handmade silicone mold.Knee surgery & related research · 2021Article
- In vivo femorotibial kinematics of medial-stabilized total knee arthroplasty correlates to post-operative clinical outcomes.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2021Article
- Small soft tissue tension changes do not affect patient-reported outcomes one year after primary TKA.International orthopaedics · 2021Article
Corrections and comments
- Erratum issued
Authors and funding
8 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeBoth coronal and sagittal laxity of well-functioning knees after total knee arthroplasty (TKA) was examined, and the correlations between the joint laxity and the clinical outcomes were analyzed to clarify the adequate joint laxity for the prosthesis, and the relationship between the laxity and the outcomes.
methodsForty well-functioning TKA knees with a high-flexion posterior-stabilized (PS) prosthesis were studied. All patients were diagnosed as having osteoarthritis with varus deformity and were followed up for 2 years or more. The coronal and sagittal laxity was assessed at extension and flexion, and the correlations between the joint laxity and the clinical outcomes were evaluated.
resultsThe varus and valgus laxity averaged 5.6 ± 1.8° and 3.6 ± 1.2° at 10° knee flexion, and 7.4 ± 5.1° and 3.6 ± 2.7° at 80° knee flexion, respectively, and the AP laxity at 30° and 75° knee flexion averaged 8.7 ± 3.6 mm and 6.6 ± 2.3 mm, respectively. Knee flexion angle correlated with the joint laxity, while the other outcomes including patient-reported pain and instability were adversely affected by the greater laxity.
conclusionsThis study exhibited the importance of consistent medial laxity both at extension and flexion, which averaged 3.6°. Care should be taken to maintain the medial stability and to obtain adequate laxity both at extension and flexion during surgery. A few degrees of medial tightness can be allowed to achieve excellent clinical results after TKA for preoperative varus knees. LEVEL OF EVIDENCE: Therapeutic study, Level III.
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