Search aim: Examine the effect of different exercise rehabilitation programs with body weight reduction on reducing the time of injured limb efficient restoration before and after low knee osteotomy surgery Curriculum used: Study was performed using the experimental approach.   Research Sample and Characteristics: The study sample comprised twenty four patients (46-62 years–old) diagnosed with need for injured limb efficient restoration after low knee osteotomy surgery, had no issues of blood pressure, pulse, and breathing, they also had no consciousness or sensory disorders.   The most important results: There were equally maximum improvements in knee measurements in injured leg compared to healthy leg for the three experimental groups with different three exercise rehabilitation programs. The third experimental group was reached to maximum improvements after 4+17 weeks followed by first group 4+20 weeks ended with second group 4+22 weeks. Three experimental groups full flexion were performed at the end of the second week after surgery. Full extension for third, first and second experimental groups was performed at the end of the seven, nine and ten week after surgery respectively