Arthroplasty in the octogenarian: quantifying the risks.

The objective of this study was to determine the risk of complications after primary total hip and knee arthroplasties in octogenarians. Using administrative data, we compared the rate of complications for octogenarians vs patients aged 65 to 79 years who underwent total hip or knee arthroplasty in Ontario between 1993 and 1997. Octogenarians were 3.

Are seat belt restraints as effective in school age children as in adults? A prospective crash study.

Objective: To study effectiveness of seat belts for protecting school age children in road vehicle crashes.

Design: Crash examinations by trained investigators.

Setting: Ten Canadian university based crash investigation centres.