Stability of the Medial Pivot Total Knee Prosthesis

Patient completed Oxford Knee Score questionnaire used to assess the patient's perspective of outcome following Total Knee Arthroplasty (TKA); score range is reported between 0-48 with improvement in outcomes reflected as a higher numerical value (e.g. a 'complete' return to pre-disease functionality would be reported as a score of 48)

Veteran's RAND 12 Item Health Survey used to assess health-related quality of life, to estimate disease burden, and to evaluate disease-specific benchmarks. Scores for the Mental Composite Score (MCS) range from 5.2 to 76.3 and are evaluated as a summative T-score with population mean of 50 (Standard Deviation = 10);higher scores indicate improved mental wellness/function as reported by patients.

Veteran's RAND 12 Item Health Survey used to assess health-related quality of life, to estimate disease burden, and to evaluate disease-specific benchmarks. Scores for the Physical Composite Score (MCS) range from 6.3 to 71.8 and are evaluated as a summative T-score with population mean of 50 (Standard Deviation = 10);higher scores indicate improved physical wellness/function as reported by patients.

Patient-reported outcome (PRO) measures use answers that patients provide to questions to produce numeric values which indicate patients' state of wellbeing or suffering as well as their ability or lack of ability to function. Values are reported as T-scores with a reference population mean of 50 (SD=10); for the Physical Function domain higher scores indicated improved physical function as reported by the patient

Patient-reported outcome (PRO) measures use answers that patients provide to questions to produce numeric values which indicate patients' state of wellbeing or suffering as well as their ability or lack of ability to function. Values are reported as T-scores with a reference population mean of 50 (SD=10); for the Pain Interference domain an increased value indicates greater severity/frequency of pain reported by the patient.

Patient-reported outcome (PRO) measures use answers that patients provide to questions to produce numeric values which indicate patients' state of wellbeing or suffering as well as their ability or lack of ability to function. Values are reported as T-scores with a reference population mean of 50 (SD=10); for the Pain Behavior domain an increased value indicates greater severity/frequency of pain reported by the patient

Patient completed questionnaire used to assess the patients' ability to forget about a joint as a result of successful treatment. Every question is scored 1 (never) to 5 (mostly) according to the selected response categories. Thus, the raw score ranges from 12 to 60 where a high score indicates an improved outcome. The raw score is linearly transformed to a 0-100 scale and then reversed to obtain the final score with higher scores indicating improved physical function/reduced impact of symptoms on activity:

Final score = 100 - ((sum(item01 to item12) - 12)/48*100)

The International Knee Documentation Committe (IKDC) Questionnaire is a subjective scale that provides patients with an overall function score based on a summative score for 3 sub categories (knee function, sports activities, pain/symptoms). A score between 0-100 is obtained as the sum of scores for each individual question, with increasing composite scores correlating positively with patient functional status/quality of life.

Physician completed Knee Society Score questionnaire used to measure a patient's functional ability before and after total knee arthroplasty (TKA); score range is reported between 0-100 with improvement in outcomes reflected as a higher numerical value (e.g. a 'complete' return to pre-disease functionality would be reported as a score of 100)

Physician completed Knee Society Score questionnaire used to measure a patient's functional ability before and after total knee arthroplasty (TKA); score range is reported between 0-100 with improvement in outcomes reflected as a higher numerical value (e.g. a 'complete' return to pre-disease functionality would be reported as a score of 100)

Used for grading the stability of the knee in various degrees of flexion according to section 4 of the International Knee Documentation Committee's Knee Ligament Standard Evaluation Form where normal (-1 to 2 mm); nearly normal (3 to 5 mm); abnormal (6 to 10 mm); severely abnormal (>10 mm)

Used for grading the stability of the knee in various degrees of flexion according to section 4 of the International Knee Documentation Committee's Knee Ligament Standard Evaluation Form where normal (-1 to 2 mm); nearly normal (3 to 5 mm); abnormal (6 to 10 mm); severely abnormal (>10 mm)

Used to assess a person's mobility and requires both static and dynamic balance. It uses the time that a person takes to rise from a chair, walk three metres, turn around, walk back to the chair, and sit down.