Patients in (G1) will be treated by a designed physiotherapy program consisted of aerobic exercise on treadmill, stretching exercise, Proprioceptive neuromuscular facilitation (PNF) techniques, Graduated active exercises, gait training, Reciprocal and weight shifting exercises. The treatment will be conducted three sessions per week, day after day for successive four weeks. The session duration was 40min to 1 hour.

Patients in (G2) will be treated by high frequency repetitive transcranial magnetic stimulation (HF-rTMS) in addition to the same physiotherapy program as in G1. The treatment will be conducted three sessions per week, day after day for successive four weeks. The session duration for rTMS will be 20-30 minutes, the physiotherapy session will be 40-45 min.

The High Frequency repetitive TMS will be delivered to the scalp over the primary motor cortex contralateral to the more affected side using a MAGSTIM rapid2 machine (Model P/N 3576-23-09, MAGSTIM Company LTD, UK) connected with a figure - of- eight shaped coil. Each patient will receive 12 sessions over four weeks. Position of the coil will be adjusted to find the optimal scalp position and the location of stimulation that will be marked to maintain consistency among sessions. The session will consist of 24 trains of 50 stimuli each delivered at five Hz. The procedure will be conducted with the patients in the ''On'' state (75 min. after medications)

Biodex Balance System SD (Model 945-302, software version 3.12, New York). The system consists of a circular platform supported. It can tilt 20° in all directions from the horizontal. The system's microprocessor-based actuator controls the extent of the surface instability of the platform. The system will evaluate two components of balance (balance indices and dynamic limit of stability). To assess balance indices; each patient was asked to maintain the center of mass in the middle of a concentric circle that appeared on the screen placed in front of the patient. The instrument records the actual postural sway and calculates the variance from the center, which is expressed as a balance index.

Biodex Balance System SD (Model 945-302, software version 3.12, New York). The system consists of a circular platform supported. It can tilt 20° in all directions from the horizontal. The system's microprocessor-based actuator controls the extent of the surface instability of the platform. The system will evaluate two components of balance (balance indices and dynamic limit of stability). To assess balance indices; each patient was asked to maintain the center of mass in the middle of a concentric circle that appeared on the screen placed in front of the patient. The instrument records the actual postural sway and calculates the variance from the center, which is expressed as a balance index.

Biodex Balance System SD (Model 945-302, software version 3.12, New York). The system consists of a circular platform supported. It can tilt 20° in all directions from the horizontal. The system's microprocessor-based actuator controls the extent of the surface instability of the platform. The system will evaluate two components of balance (balance indices and dynamic limit of stability). To assess balance indices; each patient was asked to maintain the center of mass in the middle of a concentric circle that appeared on the screen placed in front of the patient. The instrument records the actual postural sway and calculates the variance from the center, which is expressed as a balance index.