The purpose of this prospective study is to explore whether maximal and self-selected walking speed in individuals with knee arthroplasty is a useful and applicable clinical measure that can provide new insights into physical function after prosthetic surgery. We will examine the progression of walking speed and other measures of physical function, and investigate if walking speed can predict postoperative function. Individuals over 55 years, scheduled for knee arthroplasty will be invited to participate. Standardized functional tests such as walking speed, sit to stand and one legged stance along with patient reported outcomes will be assessed preoperatively, three months and 12 months after surgery. The study may provide useful knowledge that can be aplied clinically in the assessment and follow-up of this patient group.
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Persons with knee osteoarthritis scheduled for knee arthroplasty at Lovisenberg Diaconal Hospital who meet the eligibility criteria
Cohort
Prospective
Physical function
Other interventionObserve walking speed, both maximal and self-selected, over a 12-months period after knee arthroplasty
Change from baseline to 3 and 12 months in means in maximal and self-selected walking speed walikgn
Walking speed will be measured by 10 meter self-selected and maximal walking speed, respectively. Participant will perform two repetitions of self-selected walking speed, followed by two repetitions of maximal walking speed. Mean, measured by meters per seconds, will be calculated onboth of the two different walking speeds.
Sit-to-stand
Lower extremity strength will be measured by 30 sec sit to stand. Number of standing up in 30 seconds will be counted and recorded
One legged stance
Balance will be measured by one legged stance. The participant will perform the test by standing on one leg and the other in 90 degrees flexion of the hip and knee, hands on hips. The test will be performed twice, with the non-affected leg to be tested first. The best of the two scores for each leg will be recorded.
Knee specific function and pain
Pain and function in the knee will be measured by the patient reported form KOOS which includes 42 questions evaluating pain and function in different activities in daily life the last week.
EQ5D- Health-related quality of life
Measures self-reported health-related quality of life.
Physical activity
To measure physical activity UCLA activity score will be applied. UCLA is a simple scale from 1 to 10 where the participant mark the level that suits their level of activity best. 1 is the lowest, 10 the highest score.
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