The purpose of this investigational device exemption (IDE) study is to monitor the performance (safety and efficacy) of the Maxx Orthopedics, Freedom Total Knee® System, with a femoral component of similar design, manufactured from polyether-ether-ketone (PEEK).
The purpose of this investigational device exemption (IDE) study is to monitor the performance (safety and efficacy) of the Maxx Orthopedics, Freedom Total Knee® System, with a femoral component of similar design, manufactured from polyether-ether-ketone (PEEK). PEEK is a high-performance, engineering thermoplastic characterized by an unusual combination of properties. These properties range from high temperature performance to mechanical strength and excellent chemical resistance. The PEEK-OPTIMA® femoral component, is an investigational device and is the subject of this study approved for IDE by the Federal Food and Drug Administration (FDA). Maxx Orthopedics, Freedom Total Knee System is used with instrumentation to assist with surgery of the knee. The Maxx Orthopedics, Freedom Total Knee System implants are approved by the FDA for use in the United States and is not investigational. All patients will receive the Freedom Total Knee System with the PEEK femoral component. Patient / study participents' records will be reviewed for identification of any and all complications, post-operative care, component safety and efficacy, and if re-operation is needed.
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
BASIC_SCIENCE
Masking
NONE
Enrollment
200
Primary Total Knee Arthroplasty with a PEEK femoral component
Ascentis
Leawood, Kansas, United States
RECRUITINGSouth Texas Bone and Joint
San Antonio, Texas, United States
RECRUITINGOriginal Knee Society Score
The Knee Society Score rating system was first introduced during the late 1980's and has become the standard clinical evaluation system for reporting results for patients undergoing Total Knee Arthroplasty. Most major journals strongly encourage that total knee manuscripts include Knee Society Score rating scores as part of the result section. The Knee Society Score consists of points given for pain, range of motion, and stability. The Function Score consists of points given for the ability to walk on level surfaces, and the ability to ascend and descend stairs, with deductions for the use of external supporting devices. The Knee Society Score is usually reported as the two scores, "Knee Score" and "Function Score," rather than a summation score. The KSS score has a maximum of 100 points for each domain (Knee and Function).
Time frame: 24 months post-treatment.
Knee Society Score (Knee Scores)
The Knee Society Score rating system was first introduced during the late 1980's and has become the standard clinical evaluation system for reporting results for patients undergoing Total Knee Arthroplasty. Most major journals strongly encourage that total knee manuscripts include Knee Society Score rating scores as part of the result section. The Knee Society Score consists of points given for pain, range of motion, and stability. The Function Score consists of points given for the ability to walk on level surfaces, and the ability to ascend and descend stairs, with deductions for the use of external supporting devices. The Knee Society Score is usually reported as the two scores, "Knee Score" and "Function Score," rather than a summation score. The KSS score has a maximum of 100 points for each domain (Knee and Function).
Time frame: Subject reported outcomes at 3-6 weeks 3-, 6-, 12- and 24-months post-treatment
Knee Society Score (Function Scores)
The Knee Society Score rating system was first introduced during the late 1980's and has become the standard clinical evaluation system for reporting results for patients undergoing Total Knee Arthroplasty. Most major journals strongly encourage that total knee manuscripts include Knee Society Score rating scores as part of the result section. The Knee Society Score consists of points given for pain, range of motion, and stability. The Function Score consists of points given for the ability to walk on level surfaces, and the ability to ascend and descend stairs, with deductions for the use of external supporting devices. The Knee Society Score is usually reported as the two scores, "Knee Score" and "Function Score," rather than a summation score. The KSS score has a maximum of 100 points for each domain (Knee and Function).
This platform is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional.
Time frame: Subject reported outcomes at 3-6 weeks 3-, 6-, 12- and 24-months post-treatment
Knee Injury and Osteoarthritis Outcome Score - Joint Replacement (KOOS-JR)
The KOOS-JR is self-administered and assesses three domains: stiffness (1 question), pain (4 questions), function / daily living (2 questions). The KOOS-JR meets basic criteria of outcome measures and can be used to evaluate the course of knee injury and treatment outcome. Each item (questions) is coded from 0 to 4. The raw responses are summed (0-28) which is then converted to an interval score based on the KOOS-JR conversion table. The score is a percentage score from 0 to 100, 0 representing total knee disability and 100 representing perfect knee health.
Time frame: • Subject reported outcomes at 3-6 weeks 3-, 6-, 12- and 24-months post-treatment
The Patient Reported Outcomes Measurement Information System (PROMIS) Global-10
The Patient Reported Outcomes Measurement Information System (PROMIS Global-10) is a valid and reliable patient assessment and consists of ten (10) items that measure physical health, physical functioning, general mental health, emotional distress, satisfaction with social activities and relationships, ability to carry out usual social activities and roles, pain, fatigue and overall quality of life. The response options are presented as 5-point (as well as a single 11-point) rating scales. The results of the questions are used to calculate two summary scores: a Global Physical Health Score and a Global Mental Health score. These scores are then standardized to the general population, using the "T-Score". The average "T-Score" for the United States population is 50 points, with a standard deviation of 10 points. Higher scores indicate a healthier patient. The PROMIS 10 scores are predictive of healthcare utilization, mortality in general and disease-specific clinical populations.
Time frame: • Subject reported outcomes at 3-6 weeks 3-, 6-, 12- and 24-months post-treatment
Visual-Analog Scale (VAS) score
This scale has been designed to give subjective pain information as to the degree of knee pain you the patient is currently experiencing. VAS scoring is included in the PROMIS GLOBAL-10 assessment and is not necessary to collect a separate assessment. Applying the VAS, the patient will select a number from 1 (no pain) to 10 (maximum pain) that most closely describes their current pain.
Time frame: Subject reported outcomes at 3-6 weeks 3-, 6-, 12- and 24-months post-treatment
Forgotten Joint Score (FJS-12)
The 12 question Forgotten Joint Score (FJS-12) was introduced with the aim of assessing the patients 'joint awareness'. The authors of the score suggest the "higher the score" is more representative of higher-level function after surgery, as to be able to forget about the joint requires the absence of pain and the ability to perform all desired functional tasks without limitation.
Time frame: Subject reported outcomes at 3-6 weeks 3-, 6-, 12- and 24-months post-treatment