The Knee Society Score is usually reported as the two scores, Knee Score and Function Score, rather than a summation score. The Knee Score consists of points given for pain, range of motion, and stability in both the coronal and sagittal planes, with deductions for fixed deformity, and extensor lag. The Function Score consists of points given for the ability to walk on level surfaces, and the ability to ascend and descend stairs, with deductions for the use of external supporting devices.There is, as well, a Knee Society Radiographic Evaluation system, however discrete points are not given for individual parameters on X Rays. Please click on the following links from the knee society web site for KSS outcome assessment.