Sigma^® Fixed-Bearing Knees

Fixed-Bearing knees are the most widely used knee replacements in the United States today. DePuy Orthopaedics' Sigma Fixed-Bearing Knee is a leader in Fixed-Bearing Knee systems. The design of the Sigma Fixed-Bearing Knee provides stability of the knee replacement and distributes pressure evenly throughout the joint, which helps reduce wear.

Sigma Fixed-Bearing Knees are based on the clinically proven P.F.C.^® Knee, redesigned using advanced materials such as low-wear polyethylene.¹ In a study of a group of knee replacement patients with the P.F.C. Sigma Fixed-Bearing Knee, 99.6% still had their implant at five years.²

Learn more about the differences between rotating platform and fixed-bearing implants

Sigma Fixed-Bearing Knee Features In a study of people five to ten years after surgery with Fixed-Bearing Sigma Knee implants, most of them reported that the surgery had resulted in excellent relief of pain, improved range of motion and better function of the knee3 TruMatch™ Personalized Solutions can help your surgeon obtain a precise fit of the implant. Find out how Sigma Fixed-Bearing Knee helped Lesa play competitive doubles tennis again. Read Lesa's Story

Important Safety Information

The performance of knee replacements depends on age, weight, activity level, and other factors. There are potential risks and recovery takes time. People with conditions limiting rehabilitation should not have this surgery. Only an orthopaedic surgeon can tell if knee replacement is right for you.

Talk to a doctor about your knee condition
Use our Surgeon Locator to find a surgeon near you who can discuss your options with Sigma^® Knee Replacement Solutions.

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References:
1. Dixon M, et al. "Modular Fixed-Bearing Total Knee Arthroplasty with Retention of the Posterior Cruciate Ligament. A Study of Patients Followed for a Minimum of Fifteen Years." The Journal of Bone and Joint Surgery. 2005;87:598-603
2. Dalury D, et al. "Midterm Results from the P.F.C. Sigma Total Knee Arthroplasty System." The Journal of Arthroplasty. Feb 2008:175-181.
3. Buechel FF Sr, Buechel FF Jr, Pappas MJ, D'Alessio J. Twenty-year evaluation of meniscal bearing and rotating platform knee replacements. Clinical Orthopaedics and Related Research. 2001;388:41-50.