Minimally Invasive Knee Replacement Outcomes (MIKRO) Study (MIKRO)

Inclusion Criteria:

• Presence of severely symptomatic knee osteoarthritis that has failed non- operative treatment
• Males and non-pregnant females, 35-85 years of age at the time of surgery
• ASA class 1 or 2
• Procedure will not require computer navigation
• Patient/Surgeon has not requested another implant
• Patient has signed an IRB approved study consent form
• Patient is able and willing to actively participate in post-operative rehabilitation program
• Patient understands study requirements
• Patient is willing to comply with follow-up visits and diary documentations
• Patient is capable of independent ambulation

Exclusion Criteria:

• Skeletal immaturity
• More than 10 degrees of valgus or varus deformity as measured from a weight bearing AP alignment view
• Patients with bilateral knee osteoarthritis who are considering a simultaneous bilateral procedure
• Bone or ligament insufficiency that requires the use of augments or stems, or constrained component
• Daily pre-operative use of narcotic pain medication
• Prior knee arthroplasty
• Patient is a prisoner
• Patient has had prior tibial tubercle osteotomy
• Patient's surgical knee would require removal of hardware prior to TKA
• Patient has < 95 degrees flexion pre-operatively