Porous Baseplate in Total Knee Replacement

A Prospective, Multicenter, RSA Study of the Porous Tibia Baseplate W/Jrny Lock

This is a multi-centre single cohort trial of patients undergoing cruciate-retaining total knee arthroplasty with the Advance Porous fixed bearing tibial baseplate and compatible femoral, patellar, and bearing components.

All patients will undergo post-operative model-based RSA to identify migration of the tibial baseplate with respect to the bone as well as migration of the patellar and femoral components with respect to the bone during the first 2 post-operative years. Patient health and functional outcomes will be recorded at pre- and post-operative intervals for all patients. Peri-operative adverse events and other clinical complications will be captured as encountered.

Inclusion Criteria:

• Symptomatic osteoarthritis of the knee indicating primary unilateral total knee arthroplasty
• Sufficient ligamentous function to warrant retention of the posterior cruciate ligament
• Aged 21 years or older
• Patients willing and able to comply with follow-up requirements and self-evaluations
• Ability to give informed consent

Exclusion Criteria:

• Active or prior infection
• Medical condition precluding major surgery
• Known medical condition limiting patient life expectancy to < 2 years
• Expected to receive contralateral TKA within 1 year
• Inflammatory arthropathy
• Prior patellectomy
• PCL deficiency
• Major (>25 degree) coronal plane deformity
• Bilateral coronal plane deformity requiring simultaneous bilateral TKA
• Bone defects requiring augments, cones and/or stemmed implants
• Body Mass Index greater than 40