Microplasty Tibial Tray Data Collection (MTT)

Inclusion Criteria:

The inclusion criteria will be identical to the indications stated in the FDA approved labeling for the device in 510(k) K063732. These indications are stated below:

• 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, arthrodesis, or failure of previous joint replacement procedure.

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
• A good nutritional state of the patient, and
• The patient must have reached full skeletal maturity

Non-coated (Interlock®) devices are indicated for cemented application only.

Exclusion Criteria:

The exclusion criteria will be identical to the contraindications stated in the FDA approved labeling for the device in 510(k) K063732. These contraindications are stated below:

Absolute contraindications include: infection, sepsis, and osteomyelitis.

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.

Biomet Microplasty™ Tibial Trays are contraindicated for use with constrained bearings.