A Study to Evaluate the Performance of the DePuy Low Contact Stress (LCS®) Complete Anterior-Posterior Glide (APG) Mobile Bearing Knee

Phase 4TerminatedNCT00733486

DePuy International233 enrolled

Overview

The primary objective of this investigation is to determine the survivorship of the LCS Complete AP Glide mobile bearing knee prosthesis at 5 years. The secondary objectives of this investigation are to evaluate the clinical performance of the LCS® Complete AP Glide mobile bearing knee prosthesis and to determine its long-term survivorship.

Study Type

INTERVENTIONAL

Allocation

NON_RANDOMIZED

Purpose

TREATMENT

Masking

NONE

Enrollment

233

Conditions

Osteoarthritis

Interventions

L.C.S. APG Knee Anterior Posterior Glide kneeDEVICE

Orthopaedic implant for primary knee replacement

Eligibility

Sex: ALLMin age: 45 YearsMax age: 85 Years

Medical Language ↔ Plain English

Inclusion Criteria: * Male or female subjects, aged between 45 and 85 years inclusive. * Subjects who are able to give voluntary, written informed consent to participate in this investigation and from whom consent has been obtained. * Subjects who present with any pathology that in the opinion of the clinical investigator requires a primary total knee arthroplasty. * Subjects who have an intact posterior cruciate ligament and well functioning medial and lateral collateral ligaments. * Subjects who in the opinion of the Clinical Investigator are considered to be suitable for treatment with the LCS Complete AP Glide mobile bearing knee system, according to the indications specified in the package insert leaflet. Exclusion Criteria: * Subjects who, in the opinion of the Investigator, have an existing condition that would compromise their participation and follow-up in this study. * Revision of an existing knee implant (including unicompartmental implants). * Female subjects who are pregnant. * Subjects who are known drug or alcohol abusers or with psychological disorders that could affect follow-up care or treatment outcomes. * Subjects who have participated in a clinical study with an investigational product in the last month (30 days). * Subjects who are currently involved in any personal injury litigation claims. * Subjects involved in personal Medical-Legal claims. * Subjects with a known history of poor compliance to medical treatment.

Locations (3)

Dong-A University medical centre

Pusan, South Korea

Ewha Womans University Mokdong Hospital

Seoul, South Korea

Severance Hospital, Yongsei University College of Medicine

Seoul, South Korea

Outcomes

Primary Outcomes

A survival analysis of the LCS® Complete AP Glide knee prosthesis at five years.

Time frame: 2 years

Secondary Outcomes

Changes from baseline to 3 months post-operative assessment in:Clinical outcome (stability, pain, range of motion and function), using the American Knee Society Score.

American Knee Society (AKS) knee score is a 0-100 point score (where 100 indicates excellent knee condition) that evaluates the affected knee. The knee score is composed of Pain, Range of Motion, and Stability. American Knee Society (AKS) function score is a 0-100 point score (where 100 indicates excellent knee function) that evaluates the affected knee

Time frame: Pre-op to 3 months

Change from baseline to 1 year post-operative assessment in clinical outcome (stability, pain, range of motion and function) using the American Society Score

Time frame: Pre-op to 1 year

Change from baseline to 3 year post-operative assessment in clinical outcome (stability, pain, range of motion and function) using the American Society Score

Time frame: Pre-op to 3 years

Incidence of anterior knee pain and patellar function using the Patellar Score

Data from ClinicalTrials.gov

This platform is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional.

The Patellar Score is a 1 to 30 point outcome score (where 30 indicates the best outcome) that evaluates the patella of the affected knee. The patellar score is composed of Anterior Knee Pain (max 15 points), Quadriceps Strength (max 5 points), Ability to rise from chair (max 5 points), and Stair-climbing (max 5 points).

Time frame: 3 months post-operatively

Incidence of anterior knee pain and patellar function using the Patellar Score

Time frame: 1 year post-operatively

Incidence of anterior knee pain and patellar function using the Patellar Score

Time frame: 3 year post-operatively

Patient derived outcome in terms of joint specific quality of life, as determined by the Oxford Knee Score

The Oxford Knee Score (OKS) is a 12 to 60 point patient reported outcome (PRO) score (where 12 indicates the best outcome) that evaluates the affected knee. The total score is composed of Pain and Function.

Time frame: 3 months post-operatively

Patient derived outcome in terms of joint specific quality of life, as determined by the Oxford Knee Score

Time frame: 1 year post-operatively

Patient derived outcome in terms of joint specific quality of life, as determined by the Oxford Knee Score

Time frame: 3 years post-operatively

Patient derived outcome in terms of general quality of life, as determined by the SF-12

The 12-Item Short Form Health Survey (SF-12) is a patient reported outcome survey that evaluates functional health and well-being. The survey is converted into 2 summary measures that are scored from 0 to 100 (where 100 indicates the highest level of health) - the Physical Component Score (PCS-12) and Mental Component Score (MCS-12). At times, the survey is also displayed via 8 domain scales that are also scored from 0 to 100 (where 100 indicates the highest level of health) as follows: Physical Function, Role Physical, Bodily Pain, General Health, Mental Health, Role Emotional, Social Function, and Vitality.

Time frame: 3 months post-operatively

Patient derived outcome in terms of general quality of life, as determined by the SF-12

Time frame: 1 year post-operatively

Patient derived outcome in terms of general quality of life, as determined by the SF-12

Time frame: 3 years post-operatively

A survival analysis of the LCS Complete AP Glide knee prosthesis

Kaplan Meier survivorship analysis estimates the proportion of a population that will survive past a certain time avoiding a certain event. In this study, the event is removal of any component for any reason, also known as revision for any reason. Survival estimates are provided when 40\* devices are left still being followed.

Time frame: 1 year post-operatively

A survival analysis of the LCS Complete AP Glide knee prosthesis

Time frame: 3 years post-operatively

Assessment of component alignment and positioning

Time frame: 3 months post-operatively

Assessment of component alignment and positioning

Time frame: 1 year post-operatively

Assessment of component alignment and positioning

Time frame: 3 years post-operatively

Assessment of radiolucencies

Time frame: 3 months post-operatively

Assessment of radiolucencies

Time frame: 1 year post-operatively

Assessment of radiolucencies

Time frame: 3 years post-operatively

Assessment of Patella Tilt and patellofemoral alignment

Time frame: 3 months, 1 yr, and 3 yrs