Comparing Minimal Invasive Surgery en Conventional Total Knee Arthroplasty

A Prospective Comparative Randomized International Multicenter Study Comparing MIS Computer Navigated Total Knee Arthroplasty vs Conventional Computer Navigated Total Knee Arthroplasty

Randomized clinical trial comparing minimal invasive operating technique to conventional operating technique for placement of total knee prosthesis.

Clinical evaluations, patient questionnaires, X-rays and CT scans were done to compare these two techniques.

Study executed with 3 centers and 69 patients.

Inclusion Criteria:

• patient requiring Total Knee Arthroplasty (TKA)
• patients with Osteo arthritis
• intact collateral ligaments and patella tendon
• patients willing and able to comply with the post-operative schedule

Exclusion Criteria:

• patients who require a revision TKA
• patients with TKA contralateral knee within 6 months with bad outcomes
• patients who need a TKA on contralateral side within 2 years
• intraoperative resurfacing of patella
• intraoperative eversion of patella
• patients who had prior procedure of involved knee such as high tibial osteotomy, cruciate ligament recontruction, knee fusion or patellectomy
• BMI > 30
• patients with fixed flexion contracture> 15 degrees
• patients with deformity greater than 20 degrees of varus or 15 degrees of valgus
• Patient with Mediolateral stability > 10 degrees patient with active or suspected malignancy
• patient with Rheumatoid arthritis
• patient with systemic disease that would effect subject's wellfare or overall outcome of the study
• patient with other severe concurrent joint involvement which can effect their outcome
• patients with an immobile hip
• patient with a history of Pulmonary embolism or Deep venous thrombosis