Clinical Report: Evaluating Knee Laxity and Patient-Reported Outcomes After TKA

Overview

This review evaluates the relationship between objective knee laxity measurements and patient-reported outcomes following total knee arthroplasty (TKA).

Background

Total knee arthroplasty (TKA) is a common procedure for end-stage knee osteoarthritis, yet many patients report dissatisfaction postoperatively. Knee stability, influenced by the laxity between the tibia and femur, is critical for outcomes. Understanding the link between knee laxity and patient-reported outcomes is explored.

Data Highlights

No numerical or trial data was provided in the source material.

Key Findings

• Knee stability is crucial for postoperative outcomes after TKA.
• Excessive knee laxity is correlated with inferior patient-reported outcome measures (PROMs).
• Surgeons currently assess knee laxity manually, which lacks accuracy and reproducibility.
• Objective measurement tools for knee laxity may help personalize surgical approaches.
• There is no consensus on the ideal ranges for knee laxity in the coronal and sagittal planes.

Clinical Implications

Surgeons should consider the importance of knee stability and objective laxity measurements when performing TKA.

Conclusion

The review summarizes the relationship between objective assessment of knee laxity and outcomes following TKA.

Related Resources & Content

1. Sohmiya et al., Knee Surgery, Sports Traumatology, Arthroscopy, 2014 -- Impact of Intraoperative Ligament Laxity on One-Year Functional Outcomes Following Total Knee Arthroplasty
2. Knee Surgery, Sports Traumatology, Arthroscopy, 2017 -- The Role of Generalized Joint Laxity in Influencing Outcomes Following Total Knee Arthroplasty
3. Knee Surgery, Sports Traumatology, Arthroscopy, 2017 -- Integrating Tibial Anterior Translation and Axial Rotation as a Unified Biomechanical Metric Enhances Prediction of Patient Satisfaction in Individuals with ACL Reconstruction
4. Consensus statement on problematic knee replacement and revision knee replacement: A collaboration between EKS and BASK, 2025
5. Medial Laxity Leads to Inferior Postoperative Clinical Outcomes and Function in Total Knee Arthroplasty - PubMed, 2025
6. Knee Surgery, Sports Traumatology, Arthroscopy — Lack of Correlation Between Functional Performance Assessments, Clinical Evaluations, and Patient-Reported Outcomes One Year Following Anterior Cruciate Ligament Reconstruction
7. Consensus statement on problematic knee replacement and revision knee replacement: A collaboration between EKS and BASK
8. Medial Laxity Leads to Inferior Postoperative Clinical Outcomes and Function in Total Knee Arthroplasty - PubMed
9. Assessment of joint laxity following total knee arthroplasty: A comparison of tensioner device, navigation, and robot evaluation - ScienceDirect