| Sigma knee replacements by DePuy Orthopaedics are | | | | and aggressive physiotherapy. Not all Sigma DuPuy |
| designed to provide more of the normal movement | | | | knee replacement patients will get such a high degree |
| you would expect from the knee. After knee | | | | of knee replacement flexion. Cycling is an activity |
| surgery these knee replacement implants can allow | | | | that promotes the building of hamstrings and |
| slightly more rotation while the knee flexes, thus | | | | quadriceps. Swimming is also a positive exercise for |
| accommodating your body's normal need for knee | | | | rebuilding strength and flexibility in the knee. |
| rotation. | | | | Problems with earlier knee replacement implants were |
| This kind of rotating knee platform is relatively new, | | | | due to the fact that as the knee rotates, there is |
| pioneered more than thirty years ago by Revra | | | | more stress on the joint. Early implants couldn't |
| DePuy in Warsaw, Indiana. Based on a mobile-bearing | | | | support the stress, or the ligament couldn't be |
| knee, it allows for nearly full knee rotation and can | | | | attached in such a way to allow mobility. Stress on |
| handle more stress that previous types of prosthetic | | | | the joint accelerates the aging process of a knee |
| knees. The amount of knee flexion a patient see's | | | | after implant surgery. The Sigma Rotating Platform |
| after surgery will depend on a number of factors. | | | | Knee replacement, conversely, is designed to handle |
| Patients used to not expect more than 100 degrees | | | | the stress, increasing the longevity of the knee. |
| of knee bending ability. The amount of knee flexion | | | | These new DePuy rotating platform knee implants |
| from a total knee replacement surgery can vary. | | | | have been proven to reduce wear by up to 90%. |
| With Sigma rotating platform knee implants, the | | | | Studies indicate that nearly 97% of patients are still |
| amount a patient can expect is more than previously | | | | functioning on their implants after 20 years. Over a |
| found in other types of operations - up to 155 | | | | million Sigma Knee Replacement implants have been |
| degrees bending ability. This is obtained through early | | | | done worldwide. |