Knee osteoarthritis is a degenerative joint disorder leading to pain and limited movement. Total knee arthroplasty (TKA) has transformed the treatment of knee osteoarthritis, resulting in long-term outcomes that enhance the quality of life for patients. Some individuals report experiencing noise after undergoing TKA. However, there are few randomized controlled trials that assess postoperative noise following the procedure. Additionally, no research has been conducted on individualized TKA, which involves custom-made prostheses tailored to a patient's knee shape. This study aimed to compare the incidence of noise reported by patients who undergo a primary individualized TKA using either cruciate-retaining or posterior-stabilized designs.
Articular noise is common after total knee arthroplasty (TKA), yet there is ongoing debate regarding its effect on postoperative outcomes, joint awareness and patient satisfaction. A comparative study on articular noise in 50 patients undergoing bilateral TKA using two different prosthesis designs reported that an ultra-congruent design generated less noise than a posterior-stabilized design (18% compared with 38%; p= 0.026), but there were no differences in patient preference, satisfaction, or Forgotten Joint Score (FJS) at two-year follow-up. A retrospective analysis of 160 robot-assisted and 320 conventional TKA revealed no difference in the prevalence of articular noise (40.7% vs 38.1%; p=0.647), but patients who complained of noise had lower FJS (45.5 vs 66.1; p\<0.001) and lower Knee Injury and Osteoarthritis Score Joint Replacement (KOOS-JR) scores (72.0 vs 81.4; p\<0.001) at one-year follow-up. Recent advancements have shifted medicine from standardised approaches to personalised or precision medicine, tailoring treatments and decisions for individual patients based on their specific responses and risk factors. Individualized TKA adapts features to align with pre-arthritic anatomy and restore native movement, often utilising various tools. Recent studies on individualized TKA have demonstrated promising outcomes regarding personalised coronal alignment targets, correction of extra-articular deformities, intra-operative workflow, accommodation of the third compartment, and patient satisfaction rates. This study will compare a posterior-stabilised (PS) and a cruciate-retaining (CR) individualized TKA implant. The PS implant is selected for patients with a damaged or a non-functional posterior cruciate ligament. In this case, the ligament is removed and substituted with a post-cam mechanism that aids femoral rollback during knee flexion and avoids anterior femoral subluxation. In contrast, the CR implant design can be selected for patients with an intact and functional posterior cruciate ligament. In this case, the ligament is retained, allowing it to guide femoral rollback and prevent anterior subluxation.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
OTHER
Masking
SINGLE
Enrollment
210
Total knee arthroplasty in which the osteoarthritic knee is replaced with a postero-stabilized total knee replacement. The postero-stabilized TKA consists of a femoral component with a build-in cam mechanism and a tibial component with a post-mechanism.
Total knee arthroplasty in which the osteoarthritic knee is replaced with a cruciate-retaining total knee replacement. The cruciate-retaining TKA consists of a femoral component and a tibial component that leaves the posterior cruciate ligament intact.
Do you hear noise originating from your knee?
The surgeon will ask the blind participant whether they hear articular noise originating from their knee two years after TKA.
Time frame: 2 years
Do you feel noise?
The surgeon will ask the blind participant whether they feel articular noise originating from their knee.
Time frame: 1 & 2 years
Is the noise a concern or causing discomfort?
The surgeon will ask the blind participant whether the articular noise originating from their knee is a concern or causing discomfort.
Time frame: 1 & 2 years
What kind of noise do you hear of feel?
The surgeon will ask the blind participant what kind articular noise originating from their knee (clunk, crepitus, grinding, clicking, other).
Time frame: 1 & 2 years
What part of the knee is involved?
The surgeon will ask the blind participant to identify which part of the knee is involved if they hear articular noise originating from their knee.
Time frame: 1 & 2 years
What is the impact of the noise on your quality of life, on a scale from 0 (none) to 10 (severe)?
The surgeon will ask the blind participant how their quality of life is affected by the articular noise originating from their knee.
Time frame: 1 & 2 years
This platform is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional.