Arthroplasty, Replacement, Knee Clinical Trial
Official title:
A Prospective, Single-blind, Multi-Centre, Randomised Controlled Study to Evaluate the Clinical and Patient Reported Outcomes Following Unicompartmental Knee Arthroplasty With a Robotic Assisted Technique
The overall aim of this trial is to compare functional and patient-reported outcomes and to assess the safety and effectiveness and long-term performance of the Smith+Nephew Robotic Systems for Unicompartmental Knee Replacements to non-robotic, conventionally implanted Unicompartmental Knee Replacements.
Status | Recruiting |
Enrollment | 280 |
Est. completion date | March 15, 2036 |
Est. primary completion date | March 15, 2027 |
Accepts healthy volunteers | No |
Gender | All |
Age group | 18 Years and older |
Eligibility | Inclusion Criteria: 1. The subject or, legal guardian (in the case of difficulty reading and/or writing,) must provide written informed consent, including consent for any incidental findings to be reported to their General Practitioner (reference section 7.5). 2. Subjects eighteen (18) years and older and considered to be skeletally mature at the time of surgery. 3. Willing and able to make all required study visits (for both phases of the study, up to 10 years postoperatively). 4. Able to follow instructions and deemed capable of completing all the study questionnaires. 5. The subject has primary arthritis of the knee joint involving one (UKA) compartment (medial or lateral), and is suitable for JOURNEY II UK in the opinion of the surgeon. 6. The subject can, and is willing to have radiographic images taken to include non-standard of care imaging (for long leg radiographs at follow up). Exclusion Criteria: 1. Contraindications or hypersensitivity to the use of the JII UK implant components (e.g., oxinium femoral, Tibial Baseplate, XPLE insert). 2. The subject is contraindicated for the use of robotic-assisted knee arthroplasty. 3. Participation in the treatment period of another clinical trial within thirty (30) days of the preoperative visit, or during the study. 4. Women who are pregnant, nursing, or of child-bearing potential who are not utilizing highly effective birth control measures. 5. Any subject that meets the definition of a Vulnerable Subject per ISO 14155 Section 3.55. 6. Subjects who have participated previously in this trial through UKR on other knee. 7. The subject is listed for a simultaneous bilateral knee arthroplasty 8. Subjects experiencing severe pain in both knees and consequently anticipating bilateral surgery within 12 months. 9. The subject requires a complex implant or any other implant, other than a standard UKR (e.g. stems, augments or custom-made devices) 10. Subject has an active infection or sepsis or has had previous intra-articular infections 11. Subjects with a history of poor compliance with medical treatment 12. The subject, in the opinion of the investigator, has a neuromuscular disorder (e.g. Charcot joint) that prohibits control of the index joint 13. Cases where bone stock is poor and would therefore make the procedure unjustifiable 14. Subjects with a BMI of 40 or higher 15. Those with incomplete/sufficient soft tissue around the joint. 16. Subjects with Conditions that tend to place increased loads on implants such as age, weight, and activity level, which are incompatible with a satisfactory long-term result. 17. Subjects with a medical or physical condition that, in the opinion of the Investigator, would preclude safe subject participation in the study. |
Country | Name | City | State |
---|---|---|---|
United Kingdom | The Royal Orthopaedic Hospital NHS Foundation Trust | Birmingham | West Midlands |
United Kingdom | Colchester General Hospital | Colchester | |
United Kingdom | Central Middlesex Hospital | London | |
United Kingdom | Imperial College Healthcare NHS Trust, St Mary's Hospital | London | |
United Kingdom | Norfolk and Norwich University Hospital NHS Foundation Trust | Norwich |
Lead Sponsor | Collaborator |
---|---|
Smith & Nephew, Inc. |
United Kingdom,
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | Forgotten Joint Score 12 (FJS-12) at 12 Months Post Operative | The Forgotten Joint Score 12 (FJS-12) is a self-administered score where subjects are asked to rate their awareness of their knee arthroplasty in 12 questions with a five-point Likert response format: "Never", "almost never", "seldom", "sometimes" and "mostly". The item scores are summed and linearly transformed in a 0 to 100 scale with a high value reflecting the ability of the subject to forget about the replaced knee joint during the activities of daily living. | 12 months post operative | |
Primary | Implant Survival at 10 years | Number of participants with implant survival at 10 years with survival defined as lack of unicompartmental knee arthroplasty (UKA) revision. | 10 years post operative | |
Secondary | Oxford Knee Score (OKS) | The Oxford Knee Score (OKS) is a self-administered score contains 12 equally weighted questions on activities of daily living. Responses to each question range from 0-4 with a range of a possible overall score from 0-48. A score of 0 is the worst possible outcome while a score of 48 is the best possible outcome. | Pre-operative, 6 weeks, 6 months, 1 year, 2 years, 5 years, 10 years post operative | |
Secondary | Oxford Arthroplasty Early Recovery Score (OARS) | The Oxford Arthroplasty Early Recovery Score (OARS) is a self-administered score regarding how the participant is feeling consisting of four domains: Pain, Sleep, Nausea and feeling unwell, and Mobility. The OARS questionnaire is scored 0-100 with zero being a poor recovery and 100 being positive and indicative of a good recovery. | Day 1, day 2, day 3, day 7, day 14, 6 weeks post operative | |
Secondary | Oxford Arthroplasty Early Change Score (OACS) | The Oxford Arthroplasty Early Change Score (OACS) is a self-administered score regarding how the participant feels after their surgery, compared to before, concentrating on areas such as ability, pain, overall feelings. The OACS questionnaire is scored from negative 50 to positive 50 with minus 50 being much worse than before surgery to 50 being much better than before surgery. Zero indicates no change from self-reported pre-operative health status. | Day 1, day 2, day 3, day 7, day 14, 6 weeks post operative | |
Secondary | EuroQol Five-Dimensional Five-Level (EQ-5D-5L) - Descriptive System | The descriptive system is used to describe the subject's health state & consists of 5 dimensions: mobility, self-care, usual activities, pain/discomfort, and anxiety/depression. Each dimension has 5 levels to choose the most appropriate answer: no problems, slight problems, moderate problems, severe problems, and extreme problems. The subject is asked to indicate his/her health state by marking the most appropriate statement in each of the five areas. Responses are coded as single-digit numbers expressing the severity level selected in each dimension. For instance, 'slight problems' (e.g. 'I have slight problems in walking about') is always coded as '2'. The digits for the 5 dimensions are combined in a 5-digit code. The EQ- 5D-5L index value is derived by using the vendor supplied calculator to convert each 5-digit EQ-5D-5L profile. A higher number is a better outcome. | Pre-operative, 6 weeks, 6 months, 12 months, 2 years, 5 years, 10 years post operative | |
Secondary | EuroQol Five-Dimensional Five-Level (EQ-5D-5L) - Visual Analogue Scale (VAS) | The EQ VAS records the subject's self-rated health on a vertical visual analogue scale. The endpoints on the scale are labelled "The best health you can imagine" and "The worst health you can imagine". Participants indicate a numerical value from 1-100 where 0 is the worst imaginable health state and 100 is the best imaginable health state. The VAS can be used as a quantitative measure of health outcome as judged by the individual respondents. | Pre-operative, 6 weeks, 6 months, 12 months, 2 years, 5 years, 10 years post operative | |
Secondary | Visual Analogue Scale (VAS) - Pain Score | The Visual Analogue Score (VAS) - Pain Score is self-administered score assessing participant pain using Visual Analog Scale (VAS) assessments. Subjects will be asked to complete their pain levels on a scale of 0-100, 0 being no pain experienced and 100 meaning the worst pain possible. | Pre-operative, 6 weeks, 6 months, 12 months, 2 years, 5 years, 10 years post operative | |
Secondary | Knee Injury and Osteoarthritis Outcome Score (KOOS) | There are five patient-relevant subscales of the KOOS, and each are scored separately: Pain (9 items), Activities of Daily Living (ADL) function (17 items), Sport and Recreation Function (5 items), Symptoms (7 items), and Quality of Life (4 items).
A Likert scale is used, and all items have five possible answer options scored from 0 (no problems) to 4 (extreme problems). Each of the 5 scores is calculated as the sum of the items included and then each score is transformed to a 0-100 scale, with 0 representing extreme knee problems and 100 representing no knee problems. An aggregate score is not calculated so that each of the 5 dimensions can be assess separately. |
Pre-operative, 12 months, 2 years, 5 years, 10 years post operative | |
Secondary | Implant Survival at 2 Years and 5 Years | Number of participants with implant survival at 2 years and 5 years with survival defined as lack of unicompartmental knee arthroplasty (UKA) revision. | 2 years and 5 years post operative | |
Secondary | Forgotten Joint Score 12 (FJS-12) | The Forgotten Joint Score 12 (FJS-12) is a self-administered score where subjects are asked to rate their awareness of their knee arthroplasty in 12 questions with a five-point Likert response format: "Never", "almost never", "seldom", "sometimes" and "mostly". The item scores are summed and linearly transformed in a 0 to 100 scale with a high value reflecting the ability of the subject to forget about the replaced knee joint during the activities of daily living. | Baseline, 6 weeks, 6 months, 2 years, 5 years, 10 years post operative |
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