Knee Replacement in Young Active Individuals

Modern knee replacement is a safe and effective option for young active patients who are restricted by severe osteoarthritis of the knee. For many years, knee replacements were performed using polymethylmethacrylate (PMMA), commonly known as “cement.” Cemented fixation has an excellent long-term track record, though a small percentage of patients may experience mechanical loosening over time. While cemented fixation remains a highly successful technique, modern implant designs now offer the possibility of biologic fixation—where the implant bonds directly to the bone. This technology has been used in hip replacements for decades and has become increasingly successful in knee replacements over the past 10–15 years.

Cementless knee implants are created using advanced 3D printing technology that produces a porous surface engineered to mimic the architecture of natural bone. This design allows bone to grow directly into the implant, creating a strong biologic bond without the need for cement. Biologic fixation is particularly beneficial for younger, active individuals and patients with certain body types who may place higher demands on their knee replacement.

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If knee arthritis is affecting your quality of life, learn whether knee replacement is the right option for you. During your visit, Dr. Shen will evaluate your symptoms, imaging, and activity goals to determine the best treatment plan.