This is a longitudinal-experimental study. The data collection and analysis are in a single-blind manner. The study will be undertaken in the Department Orthopaedics of En Chu Kong hospital (approximate 500-bed regional teaching hospital). All patients who meet the inclusion criteria are admitted for primary total knee arthroplasty and assigned to control group or intervention group randomly. The 44 patients in the control group received routine guidance of  Rehabilitation and precautions for artificial knee replacement . In addition to the routine guidance, the 44 patients in the intervention group received educations of  hiking poles exercise  on the day before surgery and before discharge, as well as a follow-up call at least once a week after discharge.
The purpose of this study is to examine whether the effect of hiking poles exercise on lower extremity muscular strength, knee range of motion, and quality of life in elderly patients underwent total knee arthroplasty