A Clinical Investigation of the Vanguard™ Complete Knee System

Inclusion criteria: * Painful and disabled knee joint resulting from osteoarthritis, rheumatoid arthritis, traumatic arthritis where one or more compartments are involved. * Correction of varus, valgus, or posttraumatic deformity * Correction or revision of unsuccessful osteotomy, or arthrodesis Patient selection factors to be considered include: * Need to obtain pain relief and improve function * Ability and willingness of the patient to follow instructions * Including control of weight and activity level * Good nutritional state of the patient * Patient must have reached full skeletal maturity Exclusion criteria: Absolute contraindications include: * Infection * Sepsis * Osteomyelitis * Failure of a previous joint replacement Relative contraindications include: * Uncooperative patient or patient with neurologic disorders who are incapable of following directions * Osteoporosis * Metabolic disorders which may impair bone formation * Osteomalacia * Distant foci of infections which may spread to the implant site * Rapid joint destruction, marked bone loss or bone resorption apparent on roentgenogram * Vascular insufficiency, Muscular atrophy, Neuromuscular disease * Incomplete or deficient soft tissue surrounding the knee Additional exclusion criteria includes: failure of a previous joint replacement