Poor Sarah is experiencing so much pain because of her Knee Osteoarthritis! Medication and other treatment won't work anymore so her only chance is surgery. In this surgery you will completely replace the knee joint so it will prevent the bone to bone friction which causes her tremendous pain! Perform the surgery perfectly and successfully. After that, dress up Sarah in a festive clothes to celebrate her recovery! knee replacement,knee surgery,orthopedics,simulation,medical simulation,arthritis,osteoarthritis,bone friction,artificial joint,surgical training,biomechanics,arcade,medical,arcade game,simulation game