To catheterise or not to catheterise: study in hip and knee primary arthroplasty.

This cross sectional study examines the rate of catheterisation of patients after elective primary hip and knee arthroplasty in an English district general hospital. 50 patients were included in this study, with 19 (37%) being catheterised pre-operatively. Of the remainder, 10 went into retention and had to be catheterised, while the other 21 were managed without a catheter.