Optimized Loading Response by JOURNEY II BCS Knee Increases Daily Physical Activity and Functions

Completed

Brief Summary: Smith \& Nephew's first edition of the Journey posterior stabilizing total knee arthroplasty was analyzed by the Center for Musculoskeletal Research in a past research study, and it was determined that subjects experienced more normal-like kinematic patterns. They also achieved excessive axial rotation and a decrease in weight-bearing knee flexion. Since Smith \& Nephew has made modifications to the Journey bi-cruciate stabilizing (BCS) total knee arthroplasty (TKA) design, researchers will again evaluate the kinematics of subjects implanted with the revised design to determine if subjects experience normal-like kinematic patterns and if greater weight-bearing knee flexion is achieved. The objective for this study is to analyze the in vivo kinematics for subjects implanted with a 2nd generation Journey BCS TKA and compare those patterns to subjects having a normal knee and those having the 1st generation Journey posterior stabilizing (PS) TKA that were analyzed in the previous study.

Recruitment & Eligibility

Inclusion Criteria

Not provided

Exclusion Criteria

Not provided

Arm && Interventions

Group	Intervention	Description
Smith & Nephew Journey II BCS TKA	Journey II BCS TKA	Subjects must be implanted with a Smith \& Nephew Journey II bi-cruciate stabilizing (BCS) total knee arthroplasty (TKA) implanted by Dr. Harold Cates

Primary Outcome Measures

Name	Time	Method
Kinematics During Deep Knee Bend (DKB) Activity	3 months post-operative	Maximum weight-bearing flexion during DKB Axial Rotation (AR) during DKB
Kinematics Translations During Squat to Stand (S2S) Activity	3 months post-operative	Anterior Posterior (AP) translations of lateral femoral condyles during squat to stand (S2S) activity Anterior Posterior (AP) translations of medial femoral condyles during S2S
Kinematics During Ramp Down Activity	3 months post-operative	AR of the femur during ramp down activity
Kinematics Translations During Deep Knee Bend (DKB) Activity	3 months post-operative	Anterior Posterior (AP) translations of medial femoral condyles during DKB Anterior Posterior (AP) translations of lateral femoral condyles during DKB
Kinematics During Ramp up Activity	3 months post-operative	AR of the femur during Ramp Up activity
Kinematics During Squat to Stand (S2S) Activity	3 months post-operative	Maximum weight-bearing flexion during squat to stand (S2S) activity Axial Rotation (AR) of the femur during S2S
Kinematics Translations During Ramp up Activity	3 months post-operative	AP Translations of the Medial and Lateral Femoral Condyles During Ramp Up activity
Kinematics Translations During Ramp Down Activity	3 months post-operative	AP Translations of the Medial and Lateral Femoral Condyles during Ramp down activity

Secondary Outcome Measures

Name	Time	Method

Locations (3): Tennessee Orthopaedic Foundation for Education and Research
🇺🇸
Knoxville, Tennessee, United States
Tennessee Orthopaedic Clinic
🇺🇸
Knoxville, Tennessee, United States
The University of Tennessee
🇺🇸
Knoxville, Tennessee, United States