Evaluation of the PHENO4U Data Platform in Patients Undergoing Total Knee Arthroplasty

Study Overview
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Brief Summary
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Prospective, multinational pilot study for evaluation of the Pheno4U data platform in Total Knee Arthroplasty (TKA) patients

Detailed Description
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The study will collect data for each patient receiving an Aesculap Total Knee Arthroplasty (TKA) implant. The data set will be analyzed for critical risk factors among implant and patient data in order to optimize patient-centered therapies. The products under investigation will be used in routine clinical practice and according to the Instructions for Use (IFU). Data obtained in routine clinical use will be collected in the Pheno4U data platform. In addition, patients are expected to answer questionnaires about their health status. Furthermore, patients are asked to use the so called BPMpathway sensor and application in order to measure the active Range of Motion (ROM). The sensor can also be used for pre- and postoperative training .

Official Title
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Prospective, Multinational Pilot Study for Evaluation of the PHENO4U Data Platform in Total Knee Arthroplasty Patients

Conditions
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Degenerative Osteoarthritis, Rheumatoid Arthritis, Posttraumatic Arthropathy, Chronic Instability of Knee, Stiffness of Knee, Deformity Knee

Intervention / Treatment
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* Device: Pheno4U


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Patient undergoing a total knee arthroplasty with a B. Braun knee implant system Signed written informed consent Patient's willingness & ability to use the BPMpathwaysensor Patient's willingness & ability to use the 4Patient application Exclusion Criteria: Patient age < 18 years Patient not willing to participate at the further follow-up Pregnancy If intraoperatively an implant from a different manufacturer is used, the study patient has to be excluded from the study.

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Pheno4U<br>The study will collect data for each patient receiving an Aesculap TKA implant. The data set will be analyzed for critical risk factors among implant and patient data in order to optimize patient-centered therapies. | Device: Pheno4U<br>* Total Knee Arthroplasty represents a well-established, reliable and successful treatment option for end-stage bicompartmental osteoarthritis or other indications resulting in joint destruction. In general, Implantation of a total knee prosthesis improves the quality of life through pain alleviation, deformity correction, joint stabilization, and/or functional range of motion (ROM) through restoration of normal knee kinematics and functionality<br>* Other names: Total Knee Arthroplasty;|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Identification of any unknown risks or side effects in Total Knee Arthroplasty by using sensors and patient apps | The study will collect data for each patient receiving an Aesculap TKA implant. The data set will be analyzed for critical risk factors among implant and patient data in order to optimize patient-centered therapies | up to 12 months postoperatively | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Change of Knee Injury and Osteoarthritis Outcome score | The Patient self-assessed Injury and Knee Osteoarthritis Outcome Scores (KOOS) is a joint-specific instrument: The KOOS evaluates both short-term and long-term consequences of knee injury. It holds 42 items in 5 separately scored subscales; Pain, other Symptoms, Function in daily living (ADL), Function in Sport and Recreation (Sport/Rec), and knee-related Quality of Life (QOL). The score is a percentage score from 0 to 100, 0 representing extreme problems and 100 representing no problems. | 2 weeks prior to surgery, 6 weeks postoperatively and approximately 1 year after surgery | 
| Change of Hospital for Special Surgery (HSS) Knee Surgery Expectations Survey | The Hospital for Special Surgery (HSS) Knee Surgery Expectations Survey is a 17 item questionnaire. The survey is comprised of five different categories of expectations: pain, walking, psychological state, essential activities and non-essential activities. The responses range from ''very important'' (score: 1) to ''this does not imply to me'' (score: 5). The total summed raw score ranges from 0 to 76 and the transformed score [ = (raw score/76)×100] ranges from 0 to 100. Higher scores indicate expecting more improvement for more items. | 2 weeks prior to surgery, 6 weeks postoperatively and approximately 1 year after surgery | 
| Change of Pain | Information on pain is collected by the so called painDETECT questionnaire, a self-reported screening tool for the identification of neuropathic pain. The questionnaire contains seven weighted sensory descriptors, one item relating to spatial pain characteristics and one item relating to temporal characteristics. A total score ranging from -1 to 38 can be calculated. The total score is divided into three categories (unlikely neuropathic pain (<13), unclear (13-18), likely neuropathic pain (>18)). | 2 weeks prior to surgery, 6 weeks postoperatively and approximately 1 year after surgery | 
| Patient satisfaction | Based on a single question 9 months after surgery patients are asked to grade their level of satisfaction with the methodology and rehabilitation procedure. They can choose between very dissatisfied, dissatisfied, satisfied or very satisfied. | approximately 9 months after surgery | 
| Net Promoter Score | The Net Promoter Score (NPS) is an index ranging from -100 to 100 that measures the willingness of patients to recommend the treatment to others. It is used as a proxy for gauging the patient's overall satisfaction with a treatment. Patients are surveyed on one single question. They are asked to rate on an 11-point scale the likelihood of recommending the treatment to a friend or colleague. On a scale of 0 to 10, how likely are you to recommend the same treatment to a friend or a colleague? Based on their rating, customers are then classified in 3 categories: detractors, passives and promoters. 'Detractors' gave a score lower or equal to 6. 'Passives' gave a score of 7 or 8. 'Promoters' answered 9 or 10. The NPS is determined by subtracting the percentage of customers who are detractors from the percentage who are promoters. | approximately 12 months after surgery | 
| Change of Depression, Anxiety and Stress Scale - 21 Items | The Depression, Anxiety and Stress Scale - 21 Items (DASS-21) is a set of three self-report scales designed to measure the emotional states of depression, anxiety and stress. Each of the three DASS-21 scales contains 7 items with a four point rating scale (ranging 0 - 3 points) for each item. The depression scale assesses dysphoria, hopelessness, devaluation of life, self-deprecation, lack of interest / involvement, anhedonia and inertia. The anxiety scale assesses autonomic arousal, skeletal muscle effects, situational anxiety, and subjective experience of anxious affect. The stress scale assesses difficulty relaxing, nervous arousal, and being easily upset / agitated, irritable / over-reactive and impatient. The total score is calculated by summing the scores for the relevant items, the minimum score is 0 points, the maximum score for each section is 21. A lower score represents less depression, anxiety and stress. | 1 week prior to surgery and 2 weeks postoperatively | 
| Development of Active Range of Motion | The active Range of Motion (ROM) is measured with the BPMpathway sensor and application 3 times per day for the entire duration of usage of the sensor. In general, the sensor is used for pre- and postoperative training. Patients are expected to use the sensor from pre-op consultation up to 3 month after surgery. | up to 3 months after surgery | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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bi-condylar knee replacement, severe knee joint conditions, patient reported outcome