The effect of a rehabilitation program using the Bose ( BOSU) Ball on the functional efficiency level in those with a torn cruciate ligament. After surgical ligament repair And normal knee rehabilitation

Research objective             The research aims to identify the effect of using Bose Ball exercises on the level of functional efficiency in people with a torn cruciate ligament.   Research hypotheses - There are statistically significant differences between the averages of the pre and post measurements in the level of functional efficiency in those with a torn cruciate ligament in the experimental research group. - There are statistically significant differences between the averages of the pre and post measurements in the level of functional efficiency in those with torn cruciate ligament control research group. - There are statistically significant differences between the two averages post measurements of both the experimental and control research groups in the level of functional efficiency of those with torn cruciate ligament and in favor of the experimental research group. Some terms in the research Bose Ball It is a training device for balance, strength, ability, and improvement of the heart and blood vessels. It is a hemisphere on a flat base with a diameter of 55 cm. It is used on both sides, whether the hemispherical hemisphere or the flat face and equipped with two Resistance Ropes on the two sides of its base, its length is 60 cm, and at its maximum tension, its length becomes 120 cm, the equivalent weight of 7 kg (Operative Definition