No_intervention: control group

Patients in the control group will receive a conventional physiotherapy treatment (guided by the post-TKR protocol followed at Al-Razi Orthopedic Hospital). The treatment will be delivered by four allocated physiotherapists,The treatment will be delivered by four allocated physiotherapists, and will consist of:~1. Blood circulation exercise (i.e., ankle pumps)~2. Quadriceps isometric exercises (i.e., quad sets).~3. Knee ROM exercises (i.e., knee flexion and extension).~4. Lower limb strengthening exercises (e.g., straight leg raising, short/ long arch exercises)~5. Stretching exercises for the hamstring and calf muscles.~6. Gait training (with and without the assistive device).~7. Parallel bars exercises (e.g., standing hip abduction/adduction, knee flexion, squatting).~8. Ascending/descending stairs.~9. Home program.

Experimental: intervention (treatment) group

Patients in the experimental group will receive a comprehensive fall prevention program (described below) integrated into the conventional physiotherapy treatment. The fall prevention program will consist of:~1. Otago balance exercise for 12 weeks integrated with conventional physiotherapy treatment (described in the control group).~2. Individualized advice on assistive device usage based on the participant's Berg Balance Score (BBS) revised at the 3 data collection timepoints.~3. Environmental hazard checklist.~4. Advice on getting their eyes checked and the use of appropriate footwear to ensure the elimination of other risk factors.~5. Home program (consists of balance and strength training exercises).~The treatment will be delivered by four allocated physiotherapists. The physiotherapists will receive an introductory/training session on the fall prevention program prior to the commencement of the trial.