Analysis of Standing-Up Activities from the Floor in Patients with Total Knee Replacement

Abstract

The range of motion (ROM) of the knee can be limited by total knee replacement (TKR), which often makes the patients stand-up from the floor difficult. In the present report, 42 patients who were independent in every activities of daily living (26 bilateral TKR, and 16 unilateral TKR) participated, and their knee extensor torque, ROM of the knee, functional evaluation score of the knee and the time to stand-up from the floor were measured. In addition, their standing-up patterns from the floor were observed. As a result, body rotation pattern was observed in 38 patients; 4 people performed non-rotation pattern (these patients had unilateral TKR). A high positive correlation was observed between the time to stand-up from the floor and knee extensor torque as well as between the time to stand-up from the floor and functional evaluation score of the knee in the patients with bilateral TKR. No statistical correlation was observed in unilateral TKR group. These results suggest that functional loss of the patients with bilateral TKR affects the standing-up activities from the floor.