Fractures of the patella are common and constitute almost 1% of all skeletal injuries. The patella is of importance for the extension of the knee joint. It increases the force of the quadriceps apparatus by improving the leverage. In addition, it protects the anterior articular surface of the distal femur against external violence, but may easily be injured due to its unprotected position. 20 cases of fractured patella were selected to study the mode of injury for fracture of patella, to assess knee joint motion and stability after the modified tension band wiring technique for fracture patella. Early and continuous physiotherapy following the modified tension band wiring technique is of paramount importance in determining the end results.