Abstract
It is known that activity level correlates with wear in total joint arthroplasty. UCLA activity score surveys were sent to four hundred and sixty-seven knee and hip arthroplasty patients with good/excellent clinical outcomes as determined by one-year postoperative Knee Society (KSS) and Harris Hip (HHS) scores. The UCLA activity score was correlated with clinical outcomes and demographic data. Average UCLA score was 6.2 for hips, 6.3 for knees, indicating moderate activity levels. Hip arthroplasty UCLA score significantly correlated with age, gender and one-year Oxford score. Knee arthroplasty UCLA score significantly correlated with gender, one-year functional KSS and Oxford score.
Arthroplasty patients are often warned to avoid high level activities for fear of implant loosening, failure or increased polyethylene wear. Patients with good/excellent clinical outcomes may however be inclined to participate in higher demand activities. There is need for specific information regarding patient profile and activity level following TJR.
Current recommendations for activity among TJR patients may not be justified. Longer-term follow-up will elucidate specific activities which may be permissible or detrimental to implant survivorship.
Survey response rate was 70.2% among THA patients at mean 40.7months. Mean UCLA score was 6.2/10, indicating moderate activity. Mean outcome scores; one-year HHS 94.8, Oxford 6.6. UCLA score significantly correlated with age, gender and one-year Oxford.
Survey response rate was 81.8% among TKA patients at mean 36.6months. Mean UCLA score was 6.3/10, indicating moderate activity. Mean outcome scores; one-year KSS clinical 95.9, KSS function 95, Oxford 18.2. UCLA score significantly correlated with gender, one-year KSS function and Oxford.
No significant differences among clinical outcomes and survey non-respondents.
UCLA activity score survey of two hundred and twenty-five primary TKA and two hundred and forty-two primary THA patients. Patients abstracted from prospective database and pre-selected for good/excellent outcomes based on KSS and HHS at one-year. Clinical outcomes included Oxford Hip/Knee scores. UCLA, demographics and clinical outcomes correlated using Pearson’s correlation.
UCLA scores indicate the average TJR patient maintains a moderate activity level. Younger male patients with low Oxford can be expected to participate in higher level activities. One THA patient underwent subsequent revision despite moderate activity level.
Correspondence should be addressed to Cynthia Vezina, Communications Manager, COA, 4150-360 Ste. Catherine St. West, Westmount, QC H3Z 2Y5, Canada
