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Saturday, March 13, 2004

Positive effect from primary hip, knee arthroplasty

By Nancy Fehr

Primary hip and knee arthroplasy have an overall positive effect on the quality of life of all patients, according to researchers in Poster Exhibit P078. The excellent positive effects reported using conventional orthopaedic scores and X-rays continued to hold when measured with validated outcome instruments.

The Quality of Well Being (QWB) is a valid and reliable health index that has been widely utilized for measurement of quality of life for multiple medical conditions. Researchers analyzed the results of hip and knee arthroplasty using the QWB.

Primary hip and knee arthroplasty patients with minimum follow-up data of two years were included in the study. Preoperative and postoperative QWB scores available were analyzed.

Statistical tests performed included paired sample T-Test and linear regression analysis for control of gender, race and ethnicity. A p <0.05 was considered significant. The study included 288 patients (350 primary joint replacements) with 286 primary hip arthroplasties and 64 primary knee arthroplasties.

Mean follow-up was 40 months. Mean preoperative QWB score was 0.516 (0.004), while mean postoperative QWB score was 0.552 (0.004) (p<0.001). Linear regression analysis performed showed that both women and men underwent significant improvement in QWB scores (0.039 [0.01] p<0.001 for women versus 0.031 [0.01] p<0.001 for men).

Researchers included Carlos J. Lavernia, MD; Carlos E. Moreyra, MD; Emiliano Curia, MD; and Victor Hugo Hernandez; all of the Orthopaedic Institute at Mercy Hospital Miami, Fla.

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2004 Academy News 2004 Academy News March 13 Index B

Last modified 01/March/2004