Comparing Clinical Outcome of 2 Different Total Knee Prostheses: Nexgen LPS-Flex Versus AGC

Comparing Clinical Outcome of 2 Different Total Knee Prostheses: Nexgen LPS-Flex and AGC

A randomized blinded study is conducted comparing 2 different knee prostheses. Range of motion (ROM), pain, feel of prosthesis, satisfaction and ability to do daily activities are registered at intervals up to one year postop, where patients are informed on which prosthesis they received.

We want to:

• determine whether an increased ROM is achieved with a high-flex knee compared to a standard knee
• and if so, does it matter

100 patients operated on with unilateral TKR are included and randomized to either prostheses.

Patients operated on with bilateral simultaneous TKR receive one of each prostheses but are blinded to which prosthesis is on which side. They have gait analyses performed preop and at intervals up to one year.

Inclusion Criteria:

• age below 75 years and active
• preop ROM at least 120 degress flexion
• BMI below 30
• intact ligaments

Exclusion Criteria:

• below 18 years
• unable to understand language or purpose