Satisfaction after total knee arthroplasty: a prospective matched-pair analysis of patients with customised individually made and off-the-shelf implants - Report - MDSpire
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Satisfaction after total knee arthroplasty: a prospective matched-pair analysis of patients with customised individually made and off-the-shelf implants
Clinical Report: Patient Satisfaction After Total Knee Arthroplasty with Custom vs Standard Implants
Overview
This prospective matched-pair study compared patient satisfaction and patient-reported outcomes between customised individually made (CIM) and off-the-shelf (OTS) total knee arthroplasty (TKA) implants over a 2-year follow-up. The study found that CIM TKA patients demonstrated higher satisfaction rates and improved functional outcomes compared to OTS TKA patients.
Background
Total knee arthroplasty is a common procedure for end-stage knee osteoarthritis, yet approximately 20% of patients remain dissatisfied postoperatively, often due to persistent pain and limited function. Customised individually made TKAs, designed based on patient-specific CT scans, aim to better restore individual anatomy and improve knee kinematics compared to standard off-the-shelf implants. Previous studies have shown mixed results regarding the benefits of CIM TKAs, highlighting the need for well-designed prospective studies focusing on patient-reported outcomes and satisfaction.
Data Highlights
Outcome Measure
CIM TKA
OTS TKA
Patient Satisfaction (Satisfied)
Higher rate (exact % not provided)
Lower rate
Patient-Reported Outcome Measures (PROMs)
Improved KOOS, FJS-12, HAAS scores
Less improvement
Willingness to Undergo Surgery Again
Higher
Lower
Surgeon Satisfaction
Higher
Lower
Key Findings
Patients receiving CIM TKA reported significantly higher satisfaction rates at 2 years postoperatively compared to those with OTS TKA.
CIM TKA patients showed superior improvements in knee function and activity scores including KOOS, Forgotten Joint Score (FJS-12), and High-Activity Arthroplasty Score (HAAS).
The willingness to undergo the surgery again was greater among CIM TKA recipients, indicating better perceived outcomes.
Surgeons reported higher satisfaction with the surgical outcomes in the CIM TKA group.
Both groups followed identical perioperative and rehabilitation protocols, minimizing confounding factors related to care variability.
No major differences in adverse events or complications were reported between the two implant groups.
Clinical Implications
The findings suggest that customised individually made TKAs may offer improved patient satisfaction and functional outcomes compared to standard off-the-shelf implants. Clinicians should consider patient-specific anatomical variability when planning TKA to potentially enhance postoperative satisfaction and knee function. Incorporating CIM TKA could reduce the proportion of dissatisfied patients and improve overall quality of life after surgery.
Conclusion
This prospective matched-pair study supports the hypothesis that CIM TKAs provide superior patient satisfaction and functional outcomes compared to OTS TKAs at 2 years postoperatively. Customised implants represent a promising approach to address anatomical variability and improve patient-centred results in total knee arthroplasty.
References
Author/Source/Year -- Patient Satisfaction Following Total Knee Arthroplasty: A Prospective Matched-Pair Study Comparing Custom-Made and Standard Implants
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